3495 lines
232 KiB
C
3495 lines
232 KiB
C
/* gameplaySP
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*
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* Copyright (C) 2006 Exophase <exophase@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// Not-so-important todo:
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// - stm reglist writeback when base is in the list needs adjustment
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// - block memory needs psr swapping and user mode reg swapping
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#include "common.h"
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#if defined(VITA)
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#include <psp2/kernel/sysmem.h>
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#include <stdio.h>
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#elif defined(PS2)
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#include <kernel.h>
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#endif
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u8 *last_rom_translation_ptr = NULL;
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u8 *last_ram_translation_ptr = NULL;
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#if defined(MMAP_JIT_CACHE)
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u8* rom_translation_cache;
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u8* ram_translation_cache;
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u8 *rom_translation_ptr;
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u8 *ram_translation_ptr;
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#elif defined(VITA)
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u8* rom_translation_cache;
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u8* ram_translation_cache;
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u8 *rom_translation_ptr;
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u8 *ram_translation_ptr;
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int sceBlock;
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#elif defined(_3DS)
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u8* rom_translation_cache_ptr;
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u8* ram_translation_cache_ptr;
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u8 *rom_translation_ptr = rom_translation_cache;
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u8 *ram_translation_ptr = ram_translation_cache;
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#else
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u8 *rom_translation_ptr = rom_translation_cache;
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u8 *ram_translation_ptr = ram_translation_cache;
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#endif
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/* Note, see stub files for more cache definitions */
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u32 iwram_code_min = ~0U;
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u32 iwram_code_max = 0U;
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u32 ewram_code_min = ~0U;
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u32 ewram_code_max = 0U;
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#define INITIAL_ROM_WATERMARK 16 // To avoid NULL aliasing
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u32 rom_cache_watermark = INITIAL_ROM_WATERMARK;
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u8 *bios_swi_entrypoint = NULL;
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// Contains an offset table to rom_translation cache area
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// It features a chaining linked list for collisions
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// The rom area has a small header section that contains:
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// - PC value for the entry
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// - Offset to the next entry (if any)
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typedef struct
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{
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u32 pc_value;
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u32 next_entry;
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} hashhdr_type;
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u32 rom_branch_hash[ROM_BRANCH_HASH_SIZE];
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typedef struct
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{
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u8 *block_offset;
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u16 flag_data;
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u8 condition;
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u8 update_cycles;
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} block_data_type;
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typedef struct
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{
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u32 branch_target;
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u8 *branch_source;
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} block_exit_type;
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extern u8 bit_count[256];
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// Div (6) and DivArm (7)
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#define is_div_swi(swinum) (((swinum) & 0xFE) == 0x06)
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#define arm_decode_data_proc_reg(opcode) \
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u32 rn = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 rm = opcode & 0x0F \
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#define arm_decode_data_proc_imm(opcode) \
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u32 rn = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 imm = opcode & 0xFF; \
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u32 imm_ror = ((opcode >> 8) & 0x0F) * 2 \
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#define arm_decode_psr_reg(opcode) \
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u32 psr_field = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 rm = opcode & 0x0F \
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#define arm_decode_psr_imm(opcode) \
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u32 psr_field = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 imm = opcode & 0xFF; \
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u32 imm_ror = ((opcode >> 8) & 0x0F) * 2 \
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#define arm_decode_branchx(opcode) \
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u32 rn = opcode & 0x0F \
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#define arm_decode_multiply() \
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u32 rd = (opcode >> 16) & 0x0F; \
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u32 rn = (opcode >> 12) & 0x0F; \
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u32 rs = (opcode >> 8) & 0x0F; \
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u32 rm = opcode & 0x0F \
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#define arm_decode_multiply_long() \
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u32 rdhi = (opcode >> 16) & 0x0F; \
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u32 rdlo = (opcode >> 12) & 0x0F; \
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u32 rs = (opcode >> 8) & 0x0F; \
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u32 rm = opcode & 0x0F \
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#define arm_decode_swap() \
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u32 rn = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 rm = opcode & 0x0F \
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#define arm_decode_half_trans_r() \
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u32 rn = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 rm = opcode & 0x0F \
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#define arm_decode_half_trans_of() \
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u32 rn = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 offset = ((opcode >> 4) & 0xF0) | (opcode & 0x0F) \
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#define arm_decode_data_trans_imm() \
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u32 rn = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 offset = opcode & 0x0FFF \
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#define arm_decode_data_trans_reg() \
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u32 rn = (opcode >> 16) & 0x0F; \
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u32 rd = (opcode >> 12) & 0x0F; \
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u32 rm = opcode & 0x0F \
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#define arm_decode_block_trans() \
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u32 rn = (opcode >> 16) & 0x0F; \
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u32 reg_list = opcode & 0xFFFF \
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#define arm_decode_branch() \
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s32 offset = ((s32)(opcode & 0xFFFFFF) << 8) >> 6 \
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#define thumb_decode_shift() \
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u32 imm = (opcode >> 6) & 0x1F; \
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u32 rs = (opcode >> 3) & 0x07; \
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u32 rd = opcode & 0x07 \
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#define thumb_decode_add_sub() \
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u32 rn = (opcode >> 6) & 0x07; \
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u32 rs = (opcode >> 3) & 0x07; \
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u32 rd = opcode & 0x07 \
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#define thumb_decode_add_sub_imm() \
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u32 imm = (opcode >> 6) & 0x07; \
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u32 rs = (opcode >> 3) & 0x07; \
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u32 rd = opcode & 0x07 \
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#define thumb_decode_imm() \
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u32 imm = opcode & 0xFF \
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#define thumb_decode_alu_op() \
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u32 rs = (opcode >> 3) & 0x07; \
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u32 rd = opcode & 0x07 \
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#define thumb_decode_hireg_op() \
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u32 rs = (opcode >> 3) & 0x0F; \
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u32 rd = ((opcode >> 4) & 0x08) | (opcode & 0x07) \
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#define thumb_decode_mem_reg() \
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u32 ro = (opcode >> 6) & 0x07; \
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u32 rb = (opcode >> 3) & 0x07; \
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u32 rd = opcode & 0x07 \
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#define thumb_decode_mem_imm() \
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u32 imm = (opcode >> 6) & 0x1F; \
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u32 rb = (opcode >> 3) & 0x07; \
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u32 rd = opcode & 0x07 \
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#define thumb_decode_add_sp() \
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u32 imm = opcode & 0x7F \
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#define thumb_decode_rlist() \
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u32 reg_list = opcode & 0xFF \
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#define thumb_decode_branch_cond() \
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s32 offset = (s8)(opcode & 0xFF) \
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#define thumb_decode_branch() \
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u32 offset = opcode & 0x07FF \
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/* Include the right emitter headers */
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#if defined(MIPS_ARCH)
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#include "mips/mips_emit.h"
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#elif defined(ARM_ARCH)
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#include "arm/arm_emit.h"
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#elif defined(ARM64_ARCH)
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#include "arm/arm64_emit.h"
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#else
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#include "x86/x86_emit.h"
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#endif
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/* Cache invalidation */
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#if defined(PSP)
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void platform_cache_sync(void *baseaddr, void *endptr) {
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sceKernelDcacheWritebackRange(baseaddr, ((char*)endptr) - ((char*)baseaddr));
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sceKernelIcacheInvalidateRange(baseaddr, ((char*)endptr) - ((char*)baseaddr));
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}
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#elif defined(PS2)
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void platform_cache_sync(void *baseaddr, void *endptr) {
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FlushCache(0); // Dcache flush
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FlushCache(2); // Icache invalidate
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}
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#elif defined(VITA)
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void platform_cache_sync(void *baseaddr, void *endptr) {
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sceKernelSyncVMDomain(sceBlock, baseaddr, ((char*)endptr) - ((char*)baseaddr) + 64);
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}
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#elif defined(_3DS)
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#include "3ds/3ds_utils.h"
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void platform_cache_sync(void *baseaddr, void *endptr) {
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ctr_flush_invalidate_cache();
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}
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#elif defined(ARM_ARCH) || defined(ARM64_ARCH)
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void platform_cache_sync(void *baseaddr, void *endptr) {
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__clear_cache(baseaddr, endptr);
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}
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#elif defined(MIPS_ARCH)
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void platform_cache_sync(void *baseaddr, void *endptr) {
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__builtin___clear_cache(baseaddr, endptr);
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}
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#else
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/* x86 CPUs have icache consistency checks */
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void platform_cache_sync(void *baseaddr, void *endptr) {}
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#endif
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void translate_icache_sync() {
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// Cache emitted code can only grow
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if (last_rom_translation_ptr < rom_translation_ptr) {
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platform_cache_sync(last_rom_translation_ptr, rom_translation_ptr);
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last_rom_translation_ptr = rom_translation_ptr;
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}
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if (last_ram_translation_ptr < ram_translation_ptr) {
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platform_cache_sync(last_ram_translation_ptr, ram_translation_ptr);
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last_ram_translation_ptr = ram_translation_ptr;
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}
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}
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/* End of Cache invalidation */
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#define check_pc_region(pc) \
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new_pc_region = (pc >> 15); \
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if(new_pc_region != pc_region) \
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{ \
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pc_region = new_pc_region; \
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pc_address_block = memory_map_read[new_pc_region]; \
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\
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if(!pc_address_block) \
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pc_address_block = load_gamepak_page(pc_region & 0x3FF); \
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} \
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#define translate_arm_instruction() \
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check_pc_region(pc); \
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opcode = address32(pc_address_block, (pc & 0x7FFF)); \
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condition = block_data[block_data_position].condition; \
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emit_trace_arm_instruction(pc); \
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\
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if((condition != last_condition) || (condition >= 0x20)) \
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{ \
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if((last_condition & 0x0F) != 0x0E) \
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{ \
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generate_branch_patch_conditional(backpatch_address, translation_ptr); \
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} \
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\
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last_condition = condition; \
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\
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condition &= 0x0F; \
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\
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if(condition != 0x0E) \
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{ \
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arm_conditional_block_header(); \
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} \
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} \
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\
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switch((opcode >> 20) & 0xFF) \
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{ \
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case 0x00: \
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if((opcode & 0x90) == 0x90) \
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{ \
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if(opcode & 0x20) \
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{ \
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/* STRH rd, [rn], -rm */ \
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arm_access_memory(store, down, post, u16, half_reg); \
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} \
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else \
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{ \
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/* MUL rd, rm, rs */ \
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arm_multiply(no, no); \
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cycle_count += 2; /* variable 1..4, pick 2 as an aprox. */ \
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} \
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} \
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else \
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{ \
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/* AND rd, rn, reg_op */ \
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arm_data_proc(and, reg, no_flags); \
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} \
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break; \
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\
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case 0x01: \
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if((opcode & 0x90) == 0x90) \
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{ \
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switch((opcode >> 5) & 0x03) \
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{ \
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case 0: \
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/* MULS rd, rm, rs */ \
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arm_multiply(no, yes); \
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cycle_count += 2; /* variable 1..4, pick 2 as an aprox. */ \
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break; \
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\
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case 1: \
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/* LDRH rd, [rn], -rm */ \
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arm_access_memory(load, down, post, u16, half_reg); \
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break; \
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\
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case 2: \
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/* LDRSB rd, [rn], -rm */ \
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arm_access_memory(load, down, post, s8, half_reg); \
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break; \
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\
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case 3: \
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/* LDRSH rd, [rn], -rm */ \
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arm_access_memory(load, down, post, s16, half_reg); \
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break; \
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} \
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} \
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else \
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{ \
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/* ANDS rd, rn, reg_op */ \
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arm_data_proc(ands, reg_flags, flags); \
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} \
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break; \
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\
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case 0x02: \
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if((opcode & 0x90) == 0x90) \
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{ \
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if(opcode & 0x20) \
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{ \
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/* STRH rd, [rn], -rm */ \
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arm_access_memory(store, down, post, u16, half_reg); \
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} \
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else \
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{ \
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/* MLA rd, rm, rs, rn */ \
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arm_multiply(yes, no); \
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cycle_count += 3; /* variable 2..5, pick 3 as an aprox. */ \
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} \
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} \
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else \
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{ \
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/* EOR rd, rn, reg_op */ \
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arm_data_proc(eor, reg, no_flags); \
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} \
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break; \
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\
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case 0x03: \
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if((opcode & 0x90) == 0x90) \
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{ \
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switch((opcode >> 5) & 0x03) \
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{ \
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case 0: \
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/* MLAS rd, rm, rs, rn */ \
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arm_multiply(yes, yes); \
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cycle_count += 3; /* variable 2..5, pick 3 as an aprox. */ \
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break; \
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\
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case 1: \
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/* LDRH rd, [rn], -rm */ \
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arm_access_memory(load, down, post, u16, half_reg); \
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break; \
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\
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case 2: \
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/* LDRSB rd, [rn], -rm */ \
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arm_access_memory(load, down, post, s8, half_reg); \
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break; \
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\
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case 3: \
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/* LDRSH rd, [rn], -rm */ \
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arm_access_memory(load, down, post, s16, half_reg); \
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break; \
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} \
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} \
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else \
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{ \
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/* EORS rd, rn, reg_op */ \
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arm_data_proc(eors, reg_flags, flags); \
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} \
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break; \
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\
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case 0x04: \
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if((opcode & 0x90) == 0x90) \
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{ \
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/* STRH rd, [rn], -imm */ \
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arm_access_memory(store, down, post, u16, half_imm); \
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} \
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else \
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{ \
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/* SUB rd, rn, reg_op */ \
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arm_data_proc(sub, reg, no_flags); \
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} \
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break; \
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\
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case 0x05: \
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if((opcode & 0x90) == 0x90) \
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{ \
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switch((opcode >> 5) & 0x03) \
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{ \
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case 1: \
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/* LDRH rd, [rn], -imm */ \
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arm_access_memory(load, down, post, u16, half_imm); \
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break; \
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\
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case 2: \
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/* LDRSB rd, [rn], -imm */ \
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arm_access_memory(load, down, post, s8, half_imm); \
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break; \
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\
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case 3: \
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/* LDRSH rd, [rn], -imm */ \
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arm_access_memory(load, down, post, s16, half_imm); \
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break; \
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} \
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} \
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else \
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{ \
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/* SUBS rd, rn, reg_op */ \
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arm_data_proc(subs, reg, flags); \
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} \
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break; \
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\
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case 0x06: \
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if((opcode & 0x90) == 0x90) \
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{ \
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/* STRH rd, [rn], -imm */ \
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arm_access_memory(store, down, post, u16, half_imm); \
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} \
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else \
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{ \
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/* RSB rd, rn, reg_op */ \
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arm_data_proc(rsb, reg, no_flags); \
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} \
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break; \
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\
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case 0x07: \
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if((opcode & 0x90) == 0x90) \
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{ \
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switch((opcode >> 5) & 0x03) \
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{ \
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case 1: \
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/* LDRH rd, [rn], -imm */ \
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arm_access_memory(load, down, post, u16, half_imm); \
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break; \
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\
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case 2: \
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/* LDRSB rd, [rn], -imm */ \
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arm_access_memory(load, down, post, s8, half_imm); \
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break; \
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\
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case 3: \
|
|
/* LDRSH rd, [rn], -imm */ \
|
|
arm_access_memory(load, down, post, s16, half_imm); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* RSBS rd, rn, reg_op */ \
|
|
arm_data_proc(rsbs, reg, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x08: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
if(opcode & 0x20) \
|
|
{ \
|
|
/* STRH rd, [rn], +rm */ \
|
|
arm_access_memory(store, up, post, u16, half_reg); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* UMULL rd, rm, rs */ \
|
|
arm_multiply_long(u64, no, no); \
|
|
cycle_count += 3; /* this is an aproximation :P */ \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* ADD rd, rn, reg_op */ \
|
|
arm_data_proc(add, reg, no_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x09: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 0: \
|
|
/* UMULLS rdlo, rdhi, rm, rs */ \
|
|
arm_multiply_long(u64, no, yes); \
|
|
cycle_count += 3; /* this is an aproximation :P */ \
|
|
break; \
|
|
\
|
|
case 1: \
|
|
/* LDRH rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, u16, half_reg); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, s8, half_reg); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, s16, half_reg); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* ADDS rd, rn, reg_op */ \
|
|
arm_data_proc(adds, reg, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x0A: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
if(opcode & 0x20) \
|
|
{ \
|
|
/* STRH rd, [rn], +rm */ \
|
|
arm_access_memory(store, up, post, u16, half_reg); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* UMLAL rd, rm, rs */ \
|
|
arm_multiply_long(u64_add, yes, no); \
|
|
cycle_count += 3; /* Between 2 and 5 cycles? */ \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* ADC rd, rn, reg_op */ \
|
|
arm_data_proc(adc, reg, no_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x0B: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 0: \
|
|
/* UMLALS rdlo, rdhi, rm, rs */ \
|
|
arm_multiply_long(u64_add, yes, yes); \
|
|
cycle_count += 3; /* Between 2 and 5 cycles? */ \
|
|
break; \
|
|
\
|
|
case 1: \
|
|
/* LDRH rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, u16, half_reg); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, s8, half_reg); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, s16, half_reg); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* ADCS rd, rn, reg_op */ \
|
|
arm_data_proc(adcs, reg, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x0C: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
if(opcode & 0x20) \
|
|
{ \
|
|
/* STRH rd, [rn], +imm */ \
|
|
arm_access_memory(store, up, post, u16, half_imm); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* SMULL rd, rm, rs */ \
|
|
arm_multiply_long(s64, no, no); \
|
|
cycle_count += 2; /* Between 1 and 4 cycles? */ \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* SBC rd, rn, reg_op */ \
|
|
arm_data_proc(sbc, reg, no_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x0D: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 0: \
|
|
/* SMULLS rdlo, rdhi, rm, rs */ \
|
|
arm_multiply_long(s64, no, yes); \
|
|
cycle_count += 2; /* Between 1 and 4 cycles? */ \
|
|
break; \
|
|
\
|
|
case 1: \
|
|
/* LDRH rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, u16, half_imm); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, s8, half_imm); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, s16, half_imm); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* SBCS rd, rn, reg_op */ \
|
|
arm_data_proc(sbcs, reg, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x0E: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
if(opcode & 0x20) \
|
|
{ \
|
|
/* STRH rd, [rn], +imm */ \
|
|
arm_access_memory(store, up, post, u16, half_imm); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* SMLAL rd, rm, rs */ \
|
|
arm_multiply_long(s64_add, yes, no); \
|
|
cycle_count += 3; /* Between 2 and 5 cycles? */ \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* RSC rd, rn, reg_op */ \
|
|
arm_data_proc(rsc, reg, no_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x0F: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 0: \
|
|
/* SMLALS rdlo, rdhi, rm, rs */ \
|
|
arm_multiply_long(s64_add, yes, yes); \
|
|
cycle_count += 3; /* Between 2 and 5 cycles? */ \
|
|
break; \
|
|
\
|
|
case 1: \
|
|
/* LDRH rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, u16, half_imm); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, s8, half_imm); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, s16, half_imm); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* RSCS rd, rn, reg_op */ \
|
|
arm_data_proc(rscs, reg, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x10: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
if(opcode & 0x20) \
|
|
{ \
|
|
/* STRH rd, [rn - rm] */ \
|
|
arm_access_memory(store, down, pre, u16, half_reg); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* SWP rd, rm, [rn] */ \
|
|
arm_swap(u32); \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* MRS rd, cpsr */ \
|
|
arm_psr(reg, read, cpsr); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x11: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 1: \
|
|
/* LDRH rd, [rn - rm] */ \
|
|
arm_access_memory(load, down, pre, u16, half_reg); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn - rm] */ \
|
|
arm_access_memory(load, down, pre, s8, half_reg); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn - rm] */ \
|
|
arm_access_memory(load, down, pre, s16, half_reg); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* TST rd, rn, reg_op */ \
|
|
arm_data_proc_test(tst, reg_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x12: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
/* STRH rd, [rn - rm]! */ \
|
|
arm_access_memory(store, down, pre_wb, u16, half_reg); \
|
|
} \
|
|
else \
|
|
{ \
|
|
if(opcode & 0x10) \
|
|
{ \
|
|
/* BX rn */ \
|
|
arm_bx(); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* MSR cpsr, rm */ \
|
|
arm_psr(reg, store, cpsr); \
|
|
} \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x13: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 1: \
|
|
/* LDRH rd, [rn - rm]! */ \
|
|
arm_access_memory(load, down, pre_wb, u16, half_reg); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn - rm]! */ \
|
|
arm_access_memory(load, down, pre_wb, s8, half_reg); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn - rm]! */ \
|
|
arm_access_memory(load, down, pre_wb, s16, half_reg); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* TEQ rd, rn, reg_op */ \
|
|
arm_data_proc_test(teq, reg_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x14: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
if(opcode & 0x20) \
|
|
{ \
|
|
/* STRH rd, [rn - imm] */ \
|
|
arm_access_memory(store, down, pre, u16, half_imm); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* SWPB rd, rm, [rn] */ \
|
|
arm_swap(u8); \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* MRS rd, spsr */ \
|
|
arm_psr(reg, read, spsr); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x15: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 1: \
|
|
/* LDRH rd, [rn - imm] */ \
|
|
arm_access_memory(load, down, pre, u16, half_imm); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn - imm] */ \
|
|
arm_access_memory(load, down, pre, s8, half_imm); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn - imm] */ \
|
|
arm_access_memory(load, down, pre, s16, half_imm); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* CMP rn, reg_op */ \
|
|
arm_data_proc_test(cmp, reg); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x16: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
/* STRH rd, [rn - imm]! */ \
|
|
arm_access_memory(store, down, pre_wb, u16, half_imm); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* MSR spsr, rm */ \
|
|
arm_psr(reg, store, spsr); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x17: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 1: \
|
|
/* LDRH rd, [rn - imm]! */ \
|
|
arm_access_memory(load, down, pre_wb, u16, half_imm); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn - imm]! */ \
|
|
arm_access_memory(load, down, pre_wb, s8, half_imm); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn - imm]! */ \
|
|
arm_access_memory(load, down, pre_wb, s16, half_imm); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* CMN rd, rn, reg_op */ \
|
|
arm_data_proc_test(cmn, reg); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x18: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
/* STRH rd, [rn + rm] */ \
|
|
arm_access_memory(store, up, pre, u16, half_reg); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* ORR rd, rn, reg_op */ \
|
|
arm_data_proc(orr, reg, no_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x19: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 1: \
|
|
/* LDRH rd, [rn + rm] */ \
|
|
arm_access_memory(load, up, pre, u16, half_reg); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn + rm] */ \
|
|
arm_access_memory(load, up, pre, s8, half_reg); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn + rm] */ \
|
|
arm_access_memory(load, up, pre, s16, half_reg); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* ORRS rd, rn, reg_op */ \
|
|
arm_data_proc(orrs, reg_flags, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x1A: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
/* STRH rd, [rn + rm]! */ \
|
|
arm_access_memory(store, up, pre_wb, u16, half_reg); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* MOV rd, reg_op */ \
|
|
arm_data_proc_unary(mov, reg, no_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x1B: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 1: \
|
|
/* LDRH rd, [rn + rm]! */ \
|
|
arm_access_memory(load, up, pre_wb, u16, half_reg); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn + rm]! */ \
|
|
arm_access_memory(load, up, pre_wb, s8, half_reg); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn + rm]! */ \
|
|
arm_access_memory(load, up, pre_wb, s16, half_reg); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* MOVS rd, reg_op */ \
|
|
arm_data_proc_unary(movs, reg_flags, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x1C: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
/* STRH rd, [rn + imm] */ \
|
|
arm_access_memory(store, up, pre, u16, half_imm); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* BIC rd, rn, reg_op */ \
|
|
arm_data_proc(bic, reg, no_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x1D: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 1: \
|
|
/* LDRH rd, [rn + imm] */ \
|
|
arm_access_memory(load, up, pre, u16, half_imm); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn + imm] */ \
|
|
arm_access_memory(load, up, pre, s8, half_imm); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn + imm] */ \
|
|
arm_access_memory(load, up, pre, s16, half_imm); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* BICS rd, rn, reg_op */ \
|
|
arm_data_proc(bics, reg_flags, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x1E: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
/* STRH rd, [rn + imm]! */ \
|
|
arm_access_memory(store, up, pre_wb, u16, half_imm); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* MVN rd, reg_op */ \
|
|
arm_data_proc_unary(mvn, reg, no_flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x1F: \
|
|
if((opcode & 0x90) == 0x90) \
|
|
{ \
|
|
switch((opcode >> 5) & 0x03) \
|
|
{ \
|
|
case 1: \
|
|
/* LDRH rd, [rn + imm]! */ \
|
|
arm_access_memory(load, up, pre_wb, u16, half_imm); \
|
|
break; \
|
|
\
|
|
case 2: \
|
|
/* LDRSB rd, [rn + imm]! */ \
|
|
arm_access_memory(load, up, pre_wb, s8, half_imm); \
|
|
break; \
|
|
\
|
|
case 3: \
|
|
/* LDRSH rd, [rn + imm]! */ \
|
|
arm_access_memory(load, up, pre_wb, s16, half_imm); \
|
|
break; \
|
|
} \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* MVNS rd, rn, reg_op */ \
|
|
arm_data_proc_unary(mvns, reg_flags, flags); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x20: \
|
|
/* AND rd, rn, imm */ \
|
|
arm_data_proc(and, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x21: \
|
|
/* ANDS rd, rn, imm */ \
|
|
arm_data_proc(ands, imm_flags, flags); \
|
|
break; \
|
|
\
|
|
case 0x22: \
|
|
/* EOR rd, rn, imm */ \
|
|
arm_data_proc(eor, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x23: \
|
|
/* EORS rd, rn, imm */ \
|
|
arm_data_proc(eors, imm_flags, flags); \
|
|
break; \
|
|
\
|
|
case 0x24: \
|
|
/* SUB rd, rn, imm */ \
|
|
arm_data_proc(sub, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x25: \
|
|
/* SUBS rd, rn, imm */ \
|
|
arm_data_proc(subs, imm, flags); \
|
|
break; \
|
|
\
|
|
case 0x26: \
|
|
/* RSB rd, rn, imm */ \
|
|
arm_data_proc(rsb, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x27: \
|
|
/* RSBS rd, rn, imm */ \
|
|
arm_data_proc(rsbs, imm, flags); \
|
|
break; \
|
|
\
|
|
case 0x28: \
|
|
/* ADD rd, rn, imm */ \
|
|
arm_data_proc(add, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x29: \
|
|
/* ADDS rd, rn, imm */ \
|
|
arm_data_proc(adds, imm, flags); \
|
|
break; \
|
|
\
|
|
case 0x2A: \
|
|
/* ADC rd, rn, imm */ \
|
|
arm_data_proc(adc, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x2B: \
|
|
/* ADCS rd, rn, imm */ \
|
|
arm_data_proc(adcs, imm, flags); \
|
|
break; \
|
|
\
|
|
case 0x2C: \
|
|
/* SBC rd, rn, imm */ \
|
|
arm_data_proc(sbc, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x2D: \
|
|
/* SBCS rd, rn, imm */ \
|
|
arm_data_proc(sbcs, imm, flags); \
|
|
break; \
|
|
\
|
|
case 0x2E: \
|
|
/* RSC rd, rn, imm */ \
|
|
arm_data_proc(rsc, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x2F: \
|
|
/* RSCS rd, rn, imm */ \
|
|
arm_data_proc(rscs, imm, flags); \
|
|
break; \
|
|
\
|
|
case 0x30 ... 0x31: \
|
|
/* TST rn, imm */ \
|
|
arm_data_proc_test(tst, imm); \
|
|
break; \
|
|
\
|
|
case 0x32: \
|
|
/* MSR cpsr, imm */ \
|
|
arm_psr(imm, store, cpsr); \
|
|
break; \
|
|
\
|
|
case 0x33: \
|
|
/* TEQ rn, imm */ \
|
|
arm_data_proc_test(teq, imm); \
|
|
break; \
|
|
\
|
|
case 0x34 ... 0x35: \
|
|
/* CMP rn, imm */ \
|
|
arm_data_proc_test(cmp, imm); \
|
|
break; \
|
|
\
|
|
case 0x36: \
|
|
/* MSR spsr, imm */ \
|
|
arm_psr(imm, store, spsr); \
|
|
break; \
|
|
\
|
|
case 0x37: \
|
|
/* CMN rn, imm */ \
|
|
arm_data_proc_test(cmn, imm); \
|
|
break; \
|
|
\
|
|
case 0x38: \
|
|
/* ORR rd, rn, imm */ \
|
|
arm_data_proc(orr, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x39: \
|
|
/* ORRS rd, rn, imm */ \
|
|
arm_data_proc(orrs, imm_flags, flags); \
|
|
break; \
|
|
\
|
|
case 0x3A: \
|
|
/* MOV rd, imm */ \
|
|
arm_data_proc_unary(mov, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x3B: \
|
|
/* MOVS rd, imm */ \
|
|
arm_data_proc_unary(movs, imm_flags, flags); \
|
|
break; \
|
|
\
|
|
case 0x3C: \
|
|
/* BIC rd, rn, imm */ \
|
|
arm_data_proc(bic, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x3D: \
|
|
/* BICS rd, rn, imm */ \
|
|
arm_data_proc(bics, imm_flags, flags); \
|
|
break; \
|
|
\
|
|
case 0x3E: \
|
|
/* MVN rd, imm */ \
|
|
arm_data_proc_unary(mvn, imm, no_flags); \
|
|
break; \
|
|
\
|
|
case 0x3F: \
|
|
/* MVNS rd, imm */ \
|
|
arm_data_proc_unary(mvns, imm_flags, flags); \
|
|
break; \
|
|
\
|
|
case 0x40: \
|
|
/* STR rd, [rn], -imm */ \
|
|
arm_access_memory(store, down, post, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x41: \
|
|
/* LDR rd, [rn], -imm */ \
|
|
arm_access_memory(load, down, post, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x42: \
|
|
/* STRT rd, [rn], -imm */ \
|
|
arm_access_memory(store, down, post, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x43: \
|
|
/* LDRT rd, [rn], -imm */ \
|
|
arm_access_memory(load, down, post, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x44: \
|
|
/* STRB rd, [rn], -imm */ \
|
|
arm_access_memory(store, down, post, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x45: \
|
|
/* LDRB rd, [rn], -imm */ \
|
|
arm_access_memory(load, down, post, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x46: \
|
|
/* STRBT rd, [rn], -imm */ \
|
|
arm_access_memory(store, down, post, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x47: \
|
|
/* LDRBT rd, [rn], -imm */ \
|
|
arm_access_memory(load, down, post, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x48: \
|
|
/* STR rd, [rn], +imm */ \
|
|
arm_access_memory(store, up, post, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x49: \
|
|
/* LDR rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x4A: \
|
|
/* STRT rd, [rn], +imm */ \
|
|
arm_access_memory(store, up, post, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x4B: \
|
|
/* LDRT rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x4C: \
|
|
/* STRB rd, [rn], +imm */ \
|
|
arm_access_memory(store, up, post, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x4D: \
|
|
/* LDRB rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x4E: \
|
|
/* STRBT rd, [rn], +imm */ \
|
|
arm_access_memory(store, up, post, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x4F: \
|
|
/* LDRBT rd, [rn], +imm */ \
|
|
arm_access_memory(load, up, post, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x50: \
|
|
/* STR rd, [rn - imm] */ \
|
|
arm_access_memory(store, down, pre, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x51: \
|
|
/* LDR rd, [rn - imm] */ \
|
|
arm_access_memory(load, down, pre, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x52: \
|
|
/* STR rd, [rn - imm]! */ \
|
|
arm_access_memory(store, down, pre_wb, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x53: \
|
|
/* LDR rd, [rn - imm]! */ \
|
|
arm_access_memory(load, down, pre_wb, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x54: \
|
|
/* STRB rd, [rn - imm] */ \
|
|
arm_access_memory(store, down, pre, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x55: \
|
|
/* LDRB rd, [rn - imm] */ \
|
|
arm_access_memory(load, down, pre, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x56: \
|
|
/* STRB rd, [rn - imm]! */ \
|
|
arm_access_memory(store, down, pre_wb, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x57: \
|
|
/* LDRB rd, [rn - imm]! */ \
|
|
arm_access_memory(load, down, pre_wb, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x58: \
|
|
/* STR rd, [rn + imm] */ \
|
|
arm_access_memory(store, up, pre, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x59: \
|
|
/* LDR rd, [rn + imm] */ \
|
|
arm_access_memory(load, up, pre, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x5A: \
|
|
/* STR rd, [rn + imm]! */ \
|
|
arm_access_memory(store, up, pre_wb, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x5B: \
|
|
/* LDR rd, [rn + imm]! */ \
|
|
arm_access_memory(load, up, pre_wb, u32, imm); \
|
|
break; \
|
|
\
|
|
case 0x5C: \
|
|
/* STRB rd, [rn + imm] */ \
|
|
arm_access_memory(store, up, pre, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x5D: \
|
|
/* LDRB rd, [rn + imm] */ \
|
|
arm_access_memory(load, up, pre, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x5E: \
|
|
/* STRB rd, [rn + imm]! */ \
|
|
arm_access_memory(store, up, pre_wb, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x5F: \
|
|
/* LDRBT rd, [rn + imm]! */ \
|
|
arm_access_memory(load, up, pre_wb, u8, imm); \
|
|
break; \
|
|
\
|
|
case 0x60: \
|
|
/* STR rd, [rn], -rm */ \
|
|
arm_access_memory(store, down, post, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x61: \
|
|
/* LDR rd, [rn], -rm */ \
|
|
arm_access_memory(load, down, post, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x62: \
|
|
/* STRT rd, [rn], -rm */ \
|
|
arm_access_memory(store, down, post, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x63: \
|
|
/* LDRT rd, [rn], -rm */ \
|
|
arm_access_memory(load, down, post, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x64: \
|
|
/* STRB rd, [rn], -rm */ \
|
|
arm_access_memory(store, down, post, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x65: \
|
|
/* LDRB rd, [rn], -rm */ \
|
|
arm_access_memory(load, down, post, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x66: \
|
|
/* STRBT rd, [rn], -rm */ \
|
|
arm_access_memory(store, down, post, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x67: \
|
|
/* LDRBT rd, [rn], -rm */ \
|
|
arm_access_memory(load, down, post, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x68: \
|
|
/* STR rd, [rn], +rm */ \
|
|
arm_access_memory(store, up, post, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x69: \
|
|
/* LDR rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x6A: \
|
|
/* STRT rd, [rn], +rm */ \
|
|
arm_access_memory(store, up, post, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x6B: \
|
|
/* LDRT rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x6C: \
|
|
/* STRB rd, [rn], +rm */ \
|
|
arm_access_memory(store, up, post, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x6D: \
|
|
/* LDRB rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x6E: \
|
|
/* STRBT rd, [rn], +rm */ \
|
|
arm_access_memory(store, up, post, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x6F: \
|
|
/* LDRBT rd, [rn], +rm */ \
|
|
arm_access_memory(load, up, post, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x70: \
|
|
/* STR rd, [rn - rm] */ \
|
|
arm_access_memory(store, down, pre, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x71: \
|
|
/* LDR rd, [rn - rm] */ \
|
|
arm_access_memory(load, down, pre, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x72: \
|
|
/* STR rd, [rn - rm]! */ \
|
|
arm_access_memory(store, down, pre_wb, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x73: \
|
|
/* LDR rd, [rn - rm]! */ \
|
|
arm_access_memory(load, down, pre_wb, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x74: \
|
|
/* STRB rd, [rn - rm] */ \
|
|
arm_access_memory(store, down, pre, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x75: \
|
|
/* LDRB rd, [rn - rm] */ \
|
|
arm_access_memory(load, down, pre, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x76: \
|
|
/* STRB rd, [rn - rm]! */ \
|
|
arm_access_memory(store, down, pre_wb, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x77: \
|
|
/* LDRB rd, [rn - rm]! */ \
|
|
arm_access_memory(load, down, pre_wb, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x78: \
|
|
/* STR rd, [rn + rm] */ \
|
|
arm_access_memory(store, up, pre, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x79: \
|
|
/* LDR rd, [rn + rm] */ \
|
|
arm_access_memory(load, up, pre, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x7A: \
|
|
/* STR rd, [rn + rm]! */ \
|
|
arm_access_memory(store, up, pre_wb, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x7B: \
|
|
/* LDR rd, [rn + rm]! */ \
|
|
arm_access_memory(load, up, pre_wb, u32, reg); \
|
|
break; \
|
|
\
|
|
case 0x7C: \
|
|
/* STRB rd, [rn + rm] */ \
|
|
arm_access_memory(store, up, pre, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x7D: \
|
|
/* LDRB rd, [rn + rm] */ \
|
|
arm_access_memory(load, up, pre, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x7E: \
|
|
/* STRB rd, [rn + rm]! */ \
|
|
arm_access_memory(store, up, pre_wb, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x7F: \
|
|
/* LDRBT rd, [rn + rm]! */ \
|
|
arm_access_memory(load, up, pre_wb, u8, reg); \
|
|
break; \
|
|
\
|
|
case 0x80: \
|
|
/* STMDA rn, rlist */ \
|
|
arm_block_memory(store, down_a, no, no); \
|
|
break; \
|
|
\
|
|
case 0x81: \
|
|
/* LDMDA rn, rlist */ \
|
|
arm_block_memory(load, down_a, no, no); \
|
|
break; \
|
|
\
|
|
case 0x82: \
|
|
/* STMDA rn!, rlist */ \
|
|
arm_block_memory(store, down_a, down, no); \
|
|
break; \
|
|
\
|
|
case 0x83: \
|
|
/* LDMDA rn!, rlist */ \
|
|
arm_block_memory(load, down_a, down, no); \
|
|
break; \
|
|
\
|
|
case 0x84: \
|
|
/* STMDA rn, rlist^ */ \
|
|
arm_block_memory(store, down_a, no, yes); \
|
|
break; \
|
|
\
|
|
case 0x85: \
|
|
/* LDMDA rn, rlist^ */ \
|
|
arm_block_memory(load, down_a, no, yes); \
|
|
break; \
|
|
\
|
|
case 0x86: \
|
|
/* STMDA rn!, rlist^ */ \
|
|
arm_block_memory(store, down_a, down, yes); \
|
|
break; \
|
|
\
|
|
case 0x87: \
|
|
/* LDMDA rn!, rlist^ */ \
|
|
arm_block_memory(load, down_a, down, yes); \
|
|
break; \
|
|
\
|
|
case 0x88: \
|
|
/* STMIA rn, rlist */ \
|
|
arm_block_memory(store, no, no, no); \
|
|
break; \
|
|
\
|
|
case 0x89: \
|
|
/* LDMIA rn, rlist */ \
|
|
arm_block_memory(load, no, no, no); \
|
|
break; \
|
|
\
|
|
case 0x8A: \
|
|
/* STMIA rn!, rlist */ \
|
|
arm_block_memory(store, no, up, no); \
|
|
break; \
|
|
\
|
|
case 0x8B: \
|
|
/* LDMIA rn!, rlist */ \
|
|
arm_block_memory(load, no, up, no); \
|
|
break; \
|
|
\
|
|
case 0x8C: \
|
|
/* STMIA rn, rlist^ */ \
|
|
arm_block_memory(store, no, no, yes); \
|
|
break; \
|
|
\
|
|
case 0x8D: \
|
|
/* LDMIA rn, rlist^ */ \
|
|
arm_block_memory(load, no, no, yes); \
|
|
break; \
|
|
\
|
|
case 0x8E: \
|
|
/* STMIA rn!, rlist^ */ \
|
|
arm_block_memory(store, no, up, yes); \
|
|
break; \
|
|
\
|
|
case 0x8F: \
|
|
/* LDMIA rn!, rlist^ */ \
|
|
arm_block_memory(load, no, up, yes); \
|
|
break; \
|
|
\
|
|
case 0x90: \
|
|
/* STMDB rn, rlist */ \
|
|
arm_block_memory(store, down_b, no, no); \
|
|
break; \
|
|
\
|
|
case 0x91: \
|
|
/* LDMDB rn, rlist */ \
|
|
arm_block_memory(load, down_b, no, no); \
|
|
break; \
|
|
\
|
|
case 0x92: \
|
|
/* STMDB rn!, rlist */ \
|
|
arm_block_memory(store, down_b, down, no); \
|
|
break; \
|
|
\
|
|
case 0x93: \
|
|
/* LDMDB rn!, rlist */ \
|
|
arm_block_memory(load, down_b, down, no); \
|
|
break; \
|
|
\
|
|
case 0x94: \
|
|
/* STMDB rn, rlist^ */ \
|
|
arm_block_memory(store, down_b, no, yes); \
|
|
break; \
|
|
\
|
|
case 0x95: \
|
|
/* LDMDB rn, rlist^ */ \
|
|
arm_block_memory(load, down_b, no, yes); \
|
|
break; \
|
|
\
|
|
case 0x96: \
|
|
/* STMDB rn!, rlist^ */ \
|
|
arm_block_memory(store, down_b, down, yes); \
|
|
break; \
|
|
\
|
|
case 0x97: \
|
|
/* LDMDB rn!, rlist^ */ \
|
|
arm_block_memory(load, down_b, down, yes); \
|
|
break; \
|
|
\
|
|
case 0x98: \
|
|
/* STMIB rn, rlist */ \
|
|
arm_block_memory(store, up, no, no); \
|
|
break; \
|
|
\
|
|
case 0x99: \
|
|
/* LDMIB rn, rlist */ \
|
|
arm_block_memory(load, up, no, no); \
|
|
break; \
|
|
\
|
|
case 0x9A: \
|
|
/* STMIB rn!, rlist */ \
|
|
arm_block_memory(store, up, up, no); \
|
|
break; \
|
|
\
|
|
case 0x9B: \
|
|
/* LDMIB rn!, rlist */ \
|
|
arm_block_memory(load, up, up, no); \
|
|
break; \
|
|
\
|
|
case 0x9C: \
|
|
/* STMIB rn, rlist^ */ \
|
|
arm_block_memory(store, up, no, yes); \
|
|
break; \
|
|
\
|
|
case 0x9D: \
|
|
/* LDMIB rn, rlist^ */ \
|
|
arm_block_memory(load, up, no, yes); \
|
|
break; \
|
|
\
|
|
case 0x9E: \
|
|
/* STMIB rn!, rlist^ */ \
|
|
arm_block_memory(store, up, up, yes); \
|
|
break; \
|
|
\
|
|
case 0x9F: \
|
|
/* LDMIB rn!, rlist^ */ \
|
|
arm_block_memory(load, up, up, yes); \
|
|
break; \
|
|
\
|
|
case 0xA0 ... 0xAF: \
|
|
{ \
|
|
/* B offset */ \
|
|
arm_b(); \
|
|
break; \
|
|
} \
|
|
\
|
|
case 0xB0 ... 0xBF: \
|
|
{ \
|
|
/* BL offset */ \
|
|
arm_bl(); \
|
|
break; \
|
|
} \
|
|
\
|
|
case 0xF0 ... 0xFF: \
|
|
{ \
|
|
u32 swinum = (opcode >> 16) & 0xFF; \
|
|
if (swinum == 6) { \
|
|
cycle_count += 64; /* Big under-estimation here */ \
|
|
arm_hle_div(arm); \
|
|
} \
|
|
else if (swinum == 7) { \
|
|
cycle_count += 64; /* Big under-estimation here */ \
|
|
arm_hle_div_arm(arm); \
|
|
} \
|
|
else { \
|
|
arm_swi(); \
|
|
} \
|
|
break; \
|
|
} \
|
|
} \
|
|
\
|
|
pc += 4 \
|
|
|
|
#define arm_flag_status() \
|
|
|
|
#define translate_thumb_instruction() \
|
|
flag_status = block_data[block_data_position].flag_data; \
|
|
check_pc_region(pc); \
|
|
last_opcode = opcode; \
|
|
opcode = address16(pc_address_block, (pc & 0x7FFF)); \
|
|
emit_trace_thumb_instruction(pc); \
|
|
u8 hiop = opcode >> 8; \
|
|
\
|
|
switch(hiop) \
|
|
{ \
|
|
case 0x00 ... 0x07: \
|
|
/* LSL rd, rs, imm */ \
|
|
thumb_shift(shift, lsl, imm); \
|
|
break; \
|
|
\
|
|
case 0x08 ... 0x0F: \
|
|
/* LSR rd, rs, imm */ \
|
|
thumb_shift(shift, lsr, imm); \
|
|
break; \
|
|
\
|
|
case 0x10 ... 0x17: \
|
|
/* ASR rd, rs, imm */ \
|
|
thumb_shift(shift, asr, imm); \
|
|
break; \
|
|
\
|
|
case 0x18 ... 0x19: \
|
|
/* ADD rd, rs, rn */ \
|
|
thumb_data_proc(add_sub, adds, reg, rd, rs, rn); \
|
|
break; \
|
|
\
|
|
case 0x1A ... 0x1B: \
|
|
/* SUB rd, rs, rn */ \
|
|
thumb_data_proc(add_sub, subs, reg, rd, rs, rn); \
|
|
break; \
|
|
\
|
|
case 0x1C ... 0x1D: \
|
|
/* ADD rd, rs, imm */ \
|
|
thumb_data_proc(add_sub_imm, adds, imm, rd, rs, imm); \
|
|
break; \
|
|
\
|
|
case 0x1E ... 0x1F: \
|
|
/* SUB rd, rs, imm */ \
|
|
thumb_data_proc(add_sub_imm, subs, imm, rd, rs, imm); \
|
|
break; \
|
|
\
|
|
/* MOV r0..7, imm */ \
|
|
case 0x20: thumb_data_proc_unary(imm, movs, imm, 0, imm); break; \
|
|
case 0x21: thumb_data_proc_unary(imm, movs, imm, 1, imm); break; \
|
|
case 0x22: thumb_data_proc_unary(imm, movs, imm, 2, imm); break; \
|
|
case 0x23: thumb_data_proc_unary(imm, movs, imm, 3, imm); break; \
|
|
case 0x24: thumb_data_proc_unary(imm, movs, imm, 4, imm); break; \
|
|
case 0x25: thumb_data_proc_unary(imm, movs, imm, 5, imm); break; \
|
|
case 0x26: thumb_data_proc_unary(imm, movs, imm, 6, imm); break; \
|
|
case 0x27: thumb_data_proc_unary(imm, movs, imm, 7, imm); break; \
|
|
\
|
|
/* CMP r0, imm */ \
|
|
case 0x28: thumb_data_proc_test(imm, cmp, imm, 0, imm); break; \
|
|
case 0x29: thumb_data_proc_test(imm, cmp, imm, 1, imm); break; \
|
|
case 0x2A: thumb_data_proc_test(imm, cmp, imm, 2, imm); break; \
|
|
case 0x2B: thumb_data_proc_test(imm, cmp, imm, 3, imm); break; \
|
|
case 0x2C: thumb_data_proc_test(imm, cmp, imm, 4, imm); break; \
|
|
case 0x2D: thumb_data_proc_test(imm, cmp, imm, 5, imm); break; \
|
|
case 0x2E: thumb_data_proc_test(imm, cmp, imm, 6, imm); break; \
|
|
case 0x2F: thumb_data_proc_test(imm, cmp, imm, 7, imm); break; \
|
|
\
|
|
/* ADD r0..7, imm */ \
|
|
case 0x30: thumb_data_proc(imm, adds, imm, 0, 0, imm); break; \
|
|
case 0x31: thumb_data_proc(imm, adds, imm, 1, 1, imm); break; \
|
|
case 0x32: thumb_data_proc(imm, adds, imm, 2, 2, imm); break; \
|
|
case 0x33: thumb_data_proc(imm, adds, imm, 3, 3, imm); break; \
|
|
case 0x34: thumb_data_proc(imm, adds, imm, 4, 4, imm); break; \
|
|
case 0x35: thumb_data_proc(imm, adds, imm, 5, 5, imm); break; \
|
|
case 0x36: thumb_data_proc(imm, adds, imm, 6, 6, imm); break; \
|
|
case 0x37: thumb_data_proc(imm, adds, imm, 7, 7, imm); break; \
|
|
\
|
|
/* SUB r0..7, imm */ \
|
|
case 0x38: thumb_data_proc(imm, subs, imm, 0, 0, imm); break; \
|
|
case 0x39: thumb_data_proc(imm, subs, imm, 1, 1, imm); break; \
|
|
case 0x3A: thumb_data_proc(imm, subs, imm, 2, 2, imm); break; \
|
|
case 0x3B: thumb_data_proc(imm, subs, imm, 3, 3, imm); break; \
|
|
case 0x3C: thumb_data_proc(imm, subs, imm, 4, 4, imm); break; \
|
|
case 0x3D: thumb_data_proc(imm, subs, imm, 5, 5, imm); break; \
|
|
case 0x3E: thumb_data_proc(imm, subs, imm, 6, 6, imm); break; \
|
|
case 0x3F: thumb_data_proc(imm, subs, imm, 7, 7, imm); break; \
|
|
\
|
|
case 0x40: \
|
|
switch((opcode >> 6) & 0x03) \
|
|
{ \
|
|
case 0x00: \
|
|
/* AND rd, rs */ \
|
|
thumb_data_proc(alu_op, ands, reg, rd, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x01: \
|
|
/* EOR rd, rs */ \
|
|
thumb_data_proc(alu_op, eors, reg, rd, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x02: \
|
|
/* LSL rd, rs */ \
|
|
thumb_shift(alu_op, lsl, reg); \
|
|
break; \
|
|
\
|
|
case 0x03: \
|
|
/* LSR rd, rs */ \
|
|
thumb_shift(alu_op, lsr, reg); \
|
|
break; \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x41: \
|
|
switch((opcode >> 6) & 0x03) \
|
|
{ \
|
|
case 0x00: \
|
|
/* ASR rd, rs */ \
|
|
thumb_shift(alu_op, asr, reg); \
|
|
break; \
|
|
\
|
|
case 0x01: \
|
|
/* ADC rd, rs */ \
|
|
thumb_data_proc(alu_op, adcs, reg, rd, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x02: \
|
|
/* SBC rd, rs */ \
|
|
thumb_data_proc(alu_op, sbcs, reg, rd, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x03: \
|
|
/* ROR rd, rs */ \
|
|
thumb_shift(alu_op, ror, reg); \
|
|
break; \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x42: \
|
|
switch((opcode >> 6) & 0x03) \
|
|
{ \
|
|
case 0x00: \
|
|
/* TST rd, rs */ \
|
|
thumb_data_proc_test(alu_op, tst, reg, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x01: \
|
|
/* NEG rd, rs */ \
|
|
thumb_data_proc_unary(alu_op, neg, reg, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x02: \
|
|
/* CMP rd, rs */ \
|
|
thumb_data_proc_test(alu_op, cmp, reg, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x03: \
|
|
/* CMN rd, rs */ \
|
|
thumb_data_proc_test(alu_op, cmn, reg, rd, rs); \
|
|
break; \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x43: \
|
|
switch((opcode >> 6) & 0x03) \
|
|
{ \
|
|
case 0x00: \
|
|
/* ORR rd, rs */ \
|
|
thumb_data_proc(alu_op, orrs, reg, rd, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x01: \
|
|
/* MUL rd, rs */ \
|
|
thumb_data_proc(alu_op, muls, reg, rd, rs, rd); \
|
|
cycle_count += 2; /* Between 1 and 4 extra cycles */ \
|
|
break; \
|
|
\
|
|
case 0x02: \
|
|
/* BIC rd, rs */ \
|
|
thumb_data_proc(alu_op, bics, reg, rd, rd, rs); \
|
|
break; \
|
|
\
|
|
case 0x03: \
|
|
/* MVN rd, rs */ \
|
|
thumb_data_proc_unary(alu_op, mvns, reg, rd, rs); \
|
|
break; \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x44: \
|
|
/* ADD rd, rs */ \
|
|
thumb_data_proc_hi(add); \
|
|
break; \
|
|
\
|
|
case 0x45: \
|
|
/* CMP rd, rs */ \
|
|
thumb_data_proc_test_hi(cmp); \
|
|
break; \
|
|
\
|
|
case 0x46: \
|
|
/* MOV rd, rs */ \
|
|
thumb_data_proc_mov_hi(); \
|
|
break; \
|
|
\
|
|
case 0x47: \
|
|
/* BX rs */ \
|
|
thumb_bx(); \
|
|
break; \
|
|
\
|
|
case 0x48 ... 0x4F: \
|
|
/* LDR r0..7, [pc + imm] */ \
|
|
{ \
|
|
thumb_decode_imm(); \
|
|
u32 rdreg = (hiop & 7); \
|
|
u32 aoff = (pc & ~2) + (imm*4) + 4; \
|
|
/* ROM + same page -> optimize as const load */ \
|
|
if (translation_region == TRANSLATION_REGION_ROM && \
|
|
(((aoff + 4) >> 15) == (pc >> 15))) { \
|
|
u32 value = address32(pc_address_block, (aoff & 0x7FFF)); \
|
|
thumb_load_pc_pool_const(rdreg, value); \
|
|
} else { \
|
|
thumb_access_memory(load, imm, rdreg, 0, 0, pc_relative, aoff, u32);\
|
|
} \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x50 ... 0x51: \
|
|
/* STR rd, [rb + ro] */ \
|
|
thumb_access_memory(store, mem_reg, rd, rb, ro, reg_reg, 0, u32); \
|
|
break; \
|
|
\
|
|
case 0x52 ... 0x53: \
|
|
/* STRH rd, [rb + ro] */ \
|
|
thumb_access_memory(store, mem_reg, rd, rb, ro, reg_reg, 0, u16); \
|
|
break; \
|
|
\
|
|
case 0x54 ... 0x55: \
|
|
/* STRB rd, [rb + ro] */ \
|
|
thumb_access_memory(store, mem_reg, rd, rb, ro, reg_reg, 0, u8); \
|
|
break; \
|
|
\
|
|
case 0x56 ... 0x57: \
|
|
/* LDSB rd, [rb + ro] */ \
|
|
thumb_access_memory(load, mem_reg, rd, rb, ro, reg_reg, 0, s8); \
|
|
break; \
|
|
\
|
|
case 0x58 ... 0x59: \
|
|
/* LDR rd, [rb + ro] */ \
|
|
thumb_access_memory(load, mem_reg, rd, rb, ro, reg_reg, 0, u32); \
|
|
break; \
|
|
\
|
|
case 0x5A ... 0x5B: \
|
|
/* LDRH rd, [rb + ro] */ \
|
|
thumb_access_memory(load, mem_reg, rd, rb, ro, reg_reg, 0, u16); \
|
|
break; \
|
|
\
|
|
case 0x5C ... 0x5D: \
|
|
/* LDRB rd, [rb + ro] */ \
|
|
thumb_access_memory(load, mem_reg, rd, rb, ro, reg_reg, 0, u8); \
|
|
break; \
|
|
\
|
|
case 0x5E ... 0x5F: \
|
|
/* LDSH rd, [rb + ro] */ \
|
|
thumb_access_memory(load, mem_reg, rd, rb, ro, reg_reg, 0, s16); \
|
|
break; \
|
|
\
|
|
case 0x60 ... 0x67: \
|
|
/* STR rd, [rb + imm] */ \
|
|
thumb_access_memory(store, mem_imm, rd, rb, 0, reg_imm, (imm * 4), \
|
|
u32); \
|
|
break; \
|
|
\
|
|
case 0x68 ... 0x6F: \
|
|
/* LDR rd, [rb + imm] */ \
|
|
thumb_access_memory(load, mem_imm, rd, rb, 0, reg_imm, (imm * 4), u32); \
|
|
break; \
|
|
\
|
|
case 0x70 ... 0x77: \
|
|
/* STRB rd, [rb + imm] */ \
|
|
thumb_access_memory(store, mem_imm, rd, rb, 0, reg_imm, imm, u8); \
|
|
break; \
|
|
\
|
|
case 0x78 ... 0x7F: \
|
|
/* LDRB rd, [rb + imm] */ \
|
|
thumb_access_memory(load, mem_imm, rd, rb, 0, reg_imm, imm, u8); \
|
|
break; \
|
|
\
|
|
case 0x80 ... 0x87: \
|
|
/* STRH rd, [rb + imm] */ \
|
|
thumb_access_memory(store, mem_imm, rd, rb, 0, reg_imm, \
|
|
(imm * 2), u16); \
|
|
break; \
|
|
\
|
|
case 0x88 ... 0x8F: \
|
|
/* LDRH rd, [rb + imm] */ \
|
|
thumb_access_memory(load, mem_imm, rd, rb, 0, reg_imm, (imm * 2), u16); \
|
|
break; \
|
|
\
|
|
/* STR r0..7, [sp + imm] */ \
|
|
case 0x90: \
|
|
thumb_access_memory(store, imm, 0, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x91: \
|
|
thumb_access_memory(store, imm, 1, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x92: \
|
|
thumb_access_memory(store, imm, 2, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x93: \
|
|
thumb_access_memory(store, imm, 3, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x94: \
|
|
thumb_access_memory(store, imm, 4, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x95: \
|
|
thumb_access_memory(store, imm, 5, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x96: \
|
|
thumb_access_memory(store, imm, 6, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x97: \
|
|
thumb_access_memory(store, imm, 7, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
\
|
|
/* LDR r0..7, [sp + imm] */ \
|
|
case 0x98: \
|
|
thumb_access_memory(load, imm, 0, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x99: \
|
|
thumb_access_memory(load, imm, 1, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x9A: \
|
|
thumb_access_memory(load, imm, 2, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x9B: \
|
|
thumb_access_memory(load, imm, 3, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x9C: \
|
|
thumb_access_memory(load, imm, 4, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x9D: \
|
|
thumb_access_memory(load, imm, 5, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x9E: \
|
|
thumb_access_memory(load, imm, 6, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
case 0x9F: \
|
|
thumb_access_memory(load, imm, 7, 13, 0, reg_imm_sp, imm, u32); \
|
|
break; \
|
|
\
|
|
/* ADD r0..7, pc, +imm */ \
|
|
case 0xA0: thumb_load_pc(0); break; \
|
|
case 0xA1: thumb_load_pc(1); break; \
|
|
case 0xA2: thumb_load_pc(2); break; \
|
|
case 0xA3: thumb_load_pc(3); break; \
|
|
case 0xA4: thumb_load_pc(4); break; \
|
|
case 0xA5: thumb_load_pc(5); break; \
|
|
case 0xA6: thumb_load_pc(6); break; \
|
|
case 0xA7: thumb_load_pc(7); break; \
|
|
\
|
|
/* ADD r0..7, sp, +imm */ \
|
|
case 0xA8: thumb_load_sp(0); break; \
|
|
case 0xA9: thumb_load_sp(1); break; \
|
|
case 0xAA: thumb_load_sp(2); break; \
|
|
case 0xAB: thumb_load_sp(3); break; \
|
|
case 0xAC: thumb_load_sp(4); break; \
|
|
case 0xAD: thumb_load_sp(5); break; \
|
|
case 0xAE: thumb_load_sp(6); break; \
|
|
case 0xAF: thumb_load_sp(7); break; \
|
|
\
|
|
case 0xB0 ... 0xB3: \
|
|
if((opcode >> 7) & 0x01) \
|
|
{ \
|
|
/* ADD sp, -imm */ \
|
|
thumb_adjust_sp(down); \
|
|
} \
|
|
else \
|
|
{ \
|
|
/* ADD sp, +imm */ \
|
|
thumb_adjust_sp(up); \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0xB4: \
|
|
/* PUSH rlist */ \
|
|
thumb_block_memory(store, down, no, 13); \
|
|
break; \
|
|
\
|
|
case 0xB5: \
|
|
/* PUSH rlist, lr */ \
|
|
thumb_block_memory(store, push_lr, push_lr, 13); \
|
|
break; \
|
|
\
|
|
case 0xBC: \
|
|
/* POP rlist */ \
|
|
thumb_block_memory(load, no, up, 13); \
|
|
break; \
|
|
\
|
|
case 0xBD: \
|
|
/* POP rlist, pc */ \
|
|
thumb_block_memory(load, no, pop_pc, 13); \
|
|
break; \
|
|
\
|
|
case 0xC0: \
|
|
/* STMIA r0!, rlist */ \
|
|
thumb_block_memory(store, no, up, 0); \
|
|
break; \
|
|
\
|
|
case 0xC1: \
|
|
/* STMIA r1!, rlist */ \
|
|
thumb_block_memory(store, no, up, 1); \
|
|
break; \
|
|
\
|
|
case 0xC2: \
|
|
/* STMIA r2!, rlist */ \
|
|
thumb_block_memory(store, no, up, 2); \
|
|
break; \
|
|
\
|
|
case 0xC3: \
|
|
/* STMIA r3!, rlist */ \
|
|
thumb_block_memory(store, no, up, 3); \
|
|
break; \
|
|
\
|
|
case 0xC4: \
|
|
/* STMIA r4!, rlist */ \
|
|
thumb_block_memory(store, no, up, 4); \
|
|
break; \
|
|
\
|
|
case 0xC5: \
|
|
/* STMIA r5!, rlist */ \
|
|
thumb_block_memory(store, no, up, 5); \
|
|
break; \
|
|
\
|
|
case 0xC6: \
|
|
/* STMIA r6!, rlist */ \
|
|
thumb_block_memory(store, no, up, 6); \
|
|
break; \
|
|
\
|
|
case 0xC7: \
|
|
/* STMIA r7!, rlist */ \
|
|
thumb_block_memory(store, no, up, 7); \
|
|
break; \
|
|
\
|
|
case 0xC8: \
|
|
/* LDMIA r0!, rlist */ \
|
|
thumb_block_memory(load, no, up, 0); \
|
|
break; \
|
|
\
|
|
case 0xC9: \
|
|
/* LDMIA r1!, rlist */ \
|
|
thumb_block_memory(load, no, up, 1); \
|
|
break; \
|
|
\
|
|
case 0xCA: \
|
|
/* LDMIA r2!, rlist */ \
|
|
thumb_block_memory(load, no, up, 2); \
|
|
break; \
|
|
\
|
|
case 0xCB: \
|
|
/* LDMIA r3!, rlist */ \
|
|
thumb_block_memory(load, no, up, 3); \
|
|
break; \
|
|
\
|
|
case 0xCC: \
|
|
/* LDMIA r4!, rlist */ \
|
|
thumb_block_memory(load, no, up, 4); \
|
|
break; \
|
|
\
|
|
case 0xCD: \
|
|
/* LDMIA r5!, rlist */ \
|
|
thumb_block_memory(load, no, up, 5); \
|
|
break; \
|
|
\
|
|
case 0xCE: \
|
|
/* LDMIA r6!, rlist */ \
|
|
thumb_block_memory(load, no, up, 6); \
|
|
break; \
|
|
\
|
|
case 0xCF: \
|
|
/* LDMIA r7!, rlist */ \
|
|
thumb_block_memory(load, no, up, 7); \
|
|
break; \
|
|
\
|
|
case 0xD0: \
|
|
/* BEQ label */ \
|
|
thumb_conditional_branch(eq); \
|
|
break; \
|
|
\
|
|
case 0xD1: \
|
|
/* BNE label */ \
|
|
thumb_conditional_branch(ne); \
|
|
break; \
|
|
\
|
|
case 0xD2: \
|
|
/* BCS label */ \
|
|
thumb_conditional_branch(cs); \
|
|
break; \
|
|
\
|
|
case 0xD3: \
|
|
/* BCC label */ \
|
|
thumb_conditional_branch(cc); \
|
|
break; \
|
|
\
|
|
case 0xD4: \
|
|
/* BMI label */ \
|
|
thumb_conditional_branch(mi); \
|
|
break; \
|
|
\
|
|
case 0xD5: \
|
|
/* BPL label */ \
|
|
thumb_conditional_branch(pl); \
|
|
break; \
|
|
\
|
|
case 0xD6: \
|
|
/* BVS label */ \
|
|
thumb_conditional_branch(vs); \
|
|
break; \
|
|
\
|
|
case 0xD7: \
|
|
/* BVC label */ \
|
|
thumb_conditional_branch(vc); \
|
|
break; \
|
|
\
|
|
case 0xD8: \
|
|
/* BHI label */ \
|
|
thumb_conditional_branch(hi); \
|
|
break; \
|
|
\
|
|
case 0xD9: \
|
|
/* BLS label */ \
|
|
thumb_conditional_branch(ls); \
|
|
break; \
|
|
\
|
|
case 0xDA: \
|
|
/* BGE label */ \
|
|
thumb_conditional_branch(ge); \
|
|
break; \
|
|
\
|
|
case 0xDB: \
|
|
/* BLT label */ \
|
|
thumb_conditional_branch(lt); \
|
|
break; \
|
|
\
|
|
case 0xDC: \
|
|
/* BGT label */ \
|
|
thumb_conditional_branch(gt); \
|
|
break; \
|
|
\
|
|
case 0xDD: \
|
|
/* BLE label */ \
|
|
thumb_conditional_branch(le); \
|
|
break; \
|
|
\
|
|
case 0xDF: \
|
|
{ \
|
|
u32 swinum = opcode & 0xFF; \
|
|
if (swinum == 6) { \
|
|
cycle_count += 64; /* Big under-estimation here */ \
|
|
arm_hle_div(thumb); \
|
|
} \
|
|
else if (swinum == 7) { \
|
|
cycle_count += 64; /* Big under-estimation here */ \
|
|
arm_hle_div_arm(thumb); \
|
|
} \
|
|
else { \
|
|
thumb_swi(); \
|
|
} \
|
|
break; \
|
|
} \
|
|
\
|
|
case 0xE0 ... 0xE7: \
|
|
{ \
|
|
/* B label */ \
|
|
thumb_b(); \
|
|
break; \
|
|
} \
|
|
\
|
|
case 0xF0 ... 0xF7: \
|
|
{ \
|
|
/* (low word) BL label */ \
|
|
/* This should possibly generate code if not in conjunction with a BLH \
|
|
next, but I don't think anyone will do that. */ \
|
|
break; \
|
|
} \
|
|
\
|
|
case 0xF8 ... 0xFF: \
|
|
{ \
|
|
/* (high word) BL label */ \
|
|
/* This might not be preceeding a BL low word (Golden Sun 2), if so \
|
|
it must be handled like an indirect branch. */ \
|
|
if((last_opcode >= 0xF000) && (last_opcode < 0xF800)) \
|
|
{ \
|
|
thumb_bl(); \
|
|
} \
|
|
else \
|
|
{ \
|
|
thumb_blh(); \
|
|
} \
|
|
break; \
|
|
} \
|
|
} \
|
|
\
|
|
pc += 2 \
|
|
|
|
#define thumb_flag_modifies_all() \
|
|
flag_status |= 0xFF \
|
|
|
|
#define thumb_flag_modifies_zn() \
|
|
flag_status |= 0xCC \
|
|
|
|
#define thumb_flag_modifies_znc() \
|
|
flag_status |= 0xEE \
|
|
|
|
#define thumb_flag_modifies_zn_maybe_c() \
|
|
flag_status |= 0xCE \
|
|
|
|
#define thumb_flag_modifies_c() \
|
|
flag_status |= 0x22 \
|
|
|
|
#define thumb_flag_requires_c() \
|
|
flag_status |= 0x200 \
|
|
|
|
#define thumb_flag_requires_all() \
|
|
flag_status |= 0xF00 \
|
|
|
|
#define thumb_flag_status() \
|
|
{ \
|
|
u16 flag_status = 0; \
|
|
switch((opcode >> 8) & 0xFF) \
|
|
{ \
|
|
/* left shift by imm */ \
|
|
case 0x00 ... 0x07: \
|
|
thumb_flag_modifies_zn(); \
|
|
if(((opcode >> 6) & 0x1F) != 0) \
|
|
{ \
|
|
thumb_flag_modifies_c(); \
|
|
} \
|
|
break; \
|
|
\
|
|
/* right shift by imm */ \
|
|
case 0x08 ... 0x17: \
|
|
thumb_flag_modifies_znc(); \
|
|
break; \
|
|
\
|
|
/* add, subtract */ \
|
|
case 0x18 ... 0x1F: \
|
|
thumb_flag_modifies_all(); \
|
|
break; \
|
|
\
|
|
/* mov reg, imm */ \
|
|
case 0x20 ... 0x27: \
|
|
thumb_flag_modifies_zn(); \
|
|
break; \
|
|
\
|
|
/* cmp reg, imm; add, subtract */ \
|
|
case 0x28 ... 0x3F: \
|
|
thumb_flag_modifies_all(); \
|
|
break; \
|
|
\
|
|
case 0x40: \
|
|
switch((opcode >> 6) & 0x03) \
|
|
{ \
|
|
case 0x00: \
|
|
/* AND rd, rs */ \
|
|
thumb_flag_modifies_zn(); \
|
|
break; \
|
|
\
|
|
case 0x01: \
|
|
/* EOR rd, rs */ \
|
|
thumb_flag_modifies_zn(); \
|
|
break; \
|
|
\
|
|
case 0x02: \
|
|
/* LSL rd, rs */ \
|
|
thumb_flag_modifies_zn_maybe_c(); \
|
|
break; \
|
|
\
|
|
case 0x03: \
|
|
/* LSR rd, rs */ \
|
|
thumb_flag_modifies_zn_maybe_c(); \
|
|
break; \
|
|
} \
|
|
break; \
|
|
\
|
|
case 0x41: \
|
|
switch((opcode >> 6) & 0x03) \
|
|
{ \
|
|
case 0x00: \
|
|
/* ASR rd, rs */ \
|
|
thumb_flag_modifies_zn_maybe_c(); \
|
|
break; \
|
|
\
|
|
case 0x01: \
|
|
/* ADC rd, rs */ \
|
|
thumb_flag_modifies_all(); \
|
|
thumb_flag_requires_c(); \
|
|
break; \
|
|
\
|
|
case 0x02: \
|
|
/* SBC rd, rs */ \
|
|
thumb_flag_modifies_all(); \
|
|
thumb_flag_requires_c(); \
|
|
break; \
|
|
\
|
|
case 0x03: \
|
|
/* ROR rd, rs */ \
|
|
thumb_flag_modifies_zn_maybe_c(); \
|
|
break; \
|
|
} \
|
|
break; \
|
|
\
|
|
/* TST, NEG, CMP, CMN */ \
|
|
case 0x42: \
|
|
thumb_flag_modifies_all(); \
|
|
break; \
|
|
\
|
|
/* ORR, MUL, BIC, MVN */ \
|
|
case 0x43: \
|
|
thumb_flag_modifies_zn(); \
|
|
break; \
|
|
\
|
|
case 0x45: \
|
|
/* CMP rd, rs */ \
|
|
thumb_flag_modifies_all(); \
|
|
break; \
|
|
\
|
|
/* mov might change PC (fall through if so) */ \
|
|
case 0x46: \
|
|
if((opcode & 0xFF87) != 0x4687) \
|
|
break; \
|
|
\
|
|
/* branches (can change PC) */ \
|
|
case 0x47: \
|
|
case 0xBD: \
|
|
case 0xD0 ... 0xE7: \
|
|
case 0xF0 ... 0xFF: \
|
|
thumb_flag_requires_all(); \
|
|
break; \
|
|
} \
|
|
block_data[block_data_position].flag_data = flag_status; \
|
|
} \
|
|
|
|
// I/EWRAM memory tagging
|
|
// Code emitted in the RAM cache has tags (16 bit values) in the mirror tag ram
|
|
// that indicate that the address contains code. The following values are used:
|
|
// 0x0000 : this is just data (never translated)
|
|
// 0x00XX : not used (since first byte is zero)
|
|
// 0x0101 : this is code that is not the start of a translated block
|
|
// 0xXXXX : this is the start of a translated block, starting from 0xFFFF downwards
|
|
// LSB is always set (we decrement by two) to ensure both bytes != 0
|
|
//
|
|
// The tag value is an index to a `ramtag_type` structure that sits at the end
|
|
// of the RAM CACHE (grows like a stack). For simplicity we start tags at 0xFFFF
|
|
// and grow like a stack.
|
|
|
|
#define LAST_TAG_NUM 0x0101
|
|
#define INITIAL_TOP_TAG 0xFFFF
|
|
#define CODE_TAG_BLOCK16 0x0101
|
|
#define CODE_TAG_BLOCK32 0x01010101
|
|
|
|
#define VALID_TAG(tagn) (tagn > LAST_TAG_NUM)
|
|
|
|
#define allocate_tag_arm(location) { \
|
|
location[0] = ram_block_tag; \
|
|
/* Could be another thumb inst */ \
|
|
if (!location[1]) \
|
|
location[1] = CODE_TAG_BLOCK16; \
|
|
ram_block_tag -= 2; \
|
|
}
|
|
|
|
#define allocate_tag_thumb(location) { \
|
|
location[0] = ram_block_tag; \
|
|
ram_block_tag -= 2; \
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
u32 offset_arm; // Cache offset to the ARM-mode compiled block
|
|
u32 offset_thumb; // Cache offset to the Thumb-mode compiled block
|
|
} ramtag_type;
|
|
|
|
static u32 ram_block_tag = INITIAL_TOP_TAG;
|
|
|
|
inline static ramtag_type* get_ram_tag(u16 tagval) {
|
|
ramtag_type *tbl = (ramtag_type*)&ram_translation_cache[RAM_TRANSLATION_CACHE_SIZE];
|
|
s16 tgidx = (s16)(tagval);
|
|
return &tbl[tgidx >> 1]; /* Since LSB is always 1 and thus unused */
|
|
}
|
|
|
|
// This function will return a pointer to a translated block of code. If it
|
|
// doesn't exist it will translate it, if it does it will pass it back.
|
|
|
|
// type should be "arm", "thumb", or "dual." For arm or thumb the PC should
|
|
// be a real PC, for dual the least significant bit will determine if it's
|
|
// ARM or Thumb mode.
|
|
|
|
#define block_lookup_address_pc_arm() \
|
|
u32 thumb = 0; \
|
|
pc &= ~0x03
|
|
|
|
#define block_lookup_address_pc_thumb() \
|
|
u32 thumb = 1; \
|
|
pc &= ~0x01 \
|
|
|
|
#define ram_translation_region TRANSLATION_REGION_RAM
|
|
#define rom_translation_region TRANSLATION_REGION_ROM
|
|
|
|
#define block_lookup_translate_arm(mem_type, smc_enable) \
|
|
translation_result = translate_block_arm(pc, mem_type##_translation_region, \
|
|
smc_enable) \
|
|
|
|
#define block_lookup_translate_thumb(mem_type, smc_enable) \
|
|
translation_result = translate_block_thumb(pc, \
|
|
mem_type##_translation_region, smc_enable) \
|
|
|
|
#define block_lookup_translate_ram(inst_type) \
|
|
{ \
|
|
ramtag_type* trentry; \
|
|
/* Allocate a tag if not a valid one, and initialize header */ \
|
|
if (!VALID_TAG(*location)) { \
|
|
allocate_tag_##inst_type(location); \
|
|
trentry = get_ram_tag(*location); \
|
|
trentry->offset_arm = 0; \
|
|
trentry->offset_thumb = 0; \
|
|
} else { \
|
|
trentry = get_ram_tag(*location); \
|
|
} \
|
|
\
|
|
if (trentry->offset_##inst_type == 0) \
|
|
{ \
|
|
__label__ redo; \
|
|
s32 translation_result; \
|
|
\
|
|
redo: \
|
|
\
|
|
translation_recursion_level++; \
|
|
block_address = ram_translation_ptr + block_prologue_size; \
|
|
trentry->offset_##inst_type = block_address - ram_translation_cache; \
|
|
\
|
|
translation_result = translate_block_##inst_type( \
|
|
pc, ram_translation_region, 1); \
|
|
\
|
|
translation_recursion_level--; \
|
|
\
|
|
/* If the translation failed then pass that failure on if we're in \
|
|
a recursive level, or try again if we've hit the bottom. */ \
|
|
if(translation_result == -1) \
|
|
{ \
|
|
if(translation_recursion_level) \
|
|
return NULL; \
|
|
\
|
|
goto redo; \
|
|
} \
|
|
\
|
|
if(translation_recursion_level == 0) \
|
|
translate_icache_sync(); \
|
|
} \
|
|
else \
|
|
{ \
|
|
block_address = &ram_translation_cache[trentry->offset_##inst_type]; \
|
|
} \
|
|
}
|
|
|
|
u32 translation_recursion_level = 0;
|
|
u32 translation_flush_count = 0;
|
|
|
|
|
|
#define block_lookup_address_builder(type) \
|
|
u8 function_cc *block_lookup_address_##type(u32 pc) \
|
|
{ \
|
|
u16 *location; \
|
|
u32 block_tag; \
|
|
u8 *block_address; \
|
|
\
|
|
/* Starting at the beginning, we allow for one translation cache flush. */ \
|
|
if(translation_recursion_level == 0){ \
|
|
translation_flush_count = 0; \
|
|
} \
|
|
block_lookup_address_pc_##type(); \
|
|
\
|
|
switch(pc >> 24) \
|
|
{ \
|
|
case 0x2: \
|
|
location = (u16 *)(ewram + (pc & 0x3FFFF) + 0x40000); \
|
|
block_lookup_translate_ram(type); \
|
|
break; \
|
|
\
|
|
case 0x3: \
|
|
location = (u16 *)(iwram + (pc & 0x7FFF)); \
|
|
block_lookup_translate_ram(type); \
|
|
break; \
|
|
\
|
|
case 0x0: \
|
|
case 0x8 ... 0xD: \
|
|
{ \
|
|
u32 key = pc | thumb; \
|
|
u32 hash_target = ((key * 2654435761U) >> (32 - ROM_BRANCH_HASH_BITS)) \
|
|
& (ROM_BRANCH_HASH_SIZE - 1); \
|
|
\
|
|
hashhdr_type *bhdr; \
|
|
u32 blk_offset = rom_branch_hash[hash_target]; \
|
|
u32 *blk_offset_addr = &rom_branch_hash[hash_target]; \
|
|
while(blk_offset) \
|
|
{ \
|
|
bhdr = (hashhdr_type*)&rom_translation_cache[blk_offset]; \
|
|
if(bhdr->pc_value == key) \
|
|
{ \
|
|
block_address = &rom_translation_cache[blk_offset + \
|
|
sizeof(hashhdr_type) + block_prologue_size]; \
|
|
break; \
|
|
} \
|
|
blk_offset = bhdr->next_entry; \
|
|
blk_offset_addr = &bhdr->next_entry; \
|
|
} \
|
|
if(!blk_offset) \
|
|
{ \
|
|
__label__ redo; \
|
|
s32 result; \
|
|
\
|
|
redo: \
|
|
\
|
|
translation_recursion_level++; \
|
|
bhdr = (hashhdr_type*)rom_translation_ptr; \
|
|
bhdr->pc_value = key; \
|
|
bhdr->next_entry = 0; \
|
|
*blk_offset_addr = (u32)(rom_translation_ptr - rom_translation_cache);\
|
|
rom_translation_ptr += sizeof(hashhdr_type); \
|
|
block_address = rom_translation_ptr + block_prologue_size; \
|
|
result = translate_block_##type(pc, rom_translation_region, 0); \
|
|
translation_recursion_level--; \
|
|
\
|
|
/* If the translation failed then pass that failure on if we're in \
|
|
a recursive level, or try again if we've hit the bottom. */ \
|
|
if(result == -1) \
|
|
{ \
|
|
if(translation_recursion_level) \
|
|
return NULL; \
|
|
\
|
|
goto redo; \
|
|
} \
|
|
\
|
|
if(translation_recursion_level == 0) \
|
|
translate_icache_sync(); \
|
|
} \
|
|
break; \
|
|
} \
|
|
\
|
|
default: \
|
|
/* If we're at the bottom, it means we're actually trying to jump to an \
|
|
address that we can't handle. Otherwise, it means that code scanned \
|
|
has reached an address that can't be handled, which means that we \
|
|
have most likely hit an area that doesn't contain code yet (for \
|
|
instance, in RAM). If such a thing happens, return -1 and the \
|
|
block translater will naively link it (it'll be okay, since it \
|
|
should never be hit) */ \
|
|
if(translation_recursion_level == 0) \
|
|
{ \
|
|
printf("bad jump %x (%x)\n", pc, reg[REG_PC]); \
|
|
fflush(stdout); \
|
|
} \
|
|
block_address = (u8 *)(-1); \
|
|
break; \
|
|
} \
|
|
\
|
|
return block_address; \
|
|
} \
|
|
|
|
block_lookup_address_builder(arm);
|
|
block_lookup_address_builder(thumb);
|
|
|
|
u8 function_cc *block_lookup_address_dual(u32 pc)
|
|
{
|
|
u32 thumb = pc & 0x01;
|
|
if(thumb) {
|
|
pc &= ~1;
|
|
reg[REG_CPSR] |= 0x20;
|
|
return block_lookup_address_thumb(pc);
|
|
} else {
|
|
pc = (pc + 2) & ~0x03;
|
|
reg[REG_CPSR] &= ~0x20;
|
|
return block_lookup_address_arm(pc);
|
|
}
|
|
}
|
|
|
|
// Potential exit point: If the rd field is pc for instructions is 0x0F,
|
|
// the instruction is b/bl/bx, or the instruction is ldm with PC in the
|
|
// register list.
|
|
// All instructions with upper 3 bits less than 100b have an rd field
|
|
// except bx, where the bits must be 0xF there anyway, multiplies,
|
|
// which cannot have 0xF in the corresponding fields, and msr, which
|
|
// has 0x0F there but doesn't end things (therefore must be special
|
|
// checked against). Because MSR and BX overlap both are checked for.
|
|
|
|
#define arm_exit_point \
|
|
(((opcode < 0x8000000) && ((opcode & 0x000F000) == 0x000F000) && \
|
|
((opcode & 0xDB0F000) != 0x120F000)) || \
|
|
((opcode & 0x12FFF10) == 0x12FFF10) || \
|
|
((opcode & 0x8108000) == 0x8108000) || \
|
|
((opcode >= 0xA000000) && (opcode < 0xF000000)) || \
|
|
((opcode > 0xF000000) && (!is_div_swi((opcode >> 16) & 0xFF)))) \
|
|
|
|
#define arm_opcode_branch \
|
|
((opcode & 0xE000000) == 0xA000000) \
|
|
|
|
#define arm_opcode_swi \
|
|
((opcode & 0xF000000) == 0xF000000) \
|
|
|
|
#define arm_opcode_unconditional_branch \
|
|
(condition == 0x0E) \
|
|
|
|
#define arm_load_opcode() \
|
|
opcode = address32(pc_address_block, (block_end_pc & 0x7FFF)); \
|
|
condition = opcode >> 28; \
|
|
\
|
|
opcode &= 0xFFFFFFF; \
|
|
\
|
|
block_end_pc += 4 \
|
|
|
|
#define arm_branch_target() \
|
|
branch_target = (block_end_pc + 4 + (((s32)(opcode & 0xFFFFFF) << 8) >> 6)) \
|
|
|
|
// Contiguous conditional block flags modification - it will set 0x20 in the
|
|
// condition's bits if this instruction modifies flags. Taken from the CPU
|
|
// switch so it'd better be right this time.
|
|
|
|
#define arm_set_condition(_condition) \
|
|
block_data[block_data_position].condition = _condition; \
|
|
switch((opcode >> 20) & 0xFF) \
|
|
{ \
|
|
case 0x01: \
|
|
case 0x03: \
|
|
case 0x09: \
|
|
case 0x0B: \
|
|
case 0x0D: \
|
|
case 0x0F: \
|
|
if((((opcode >> 5) & 0x03) == 0) || ((opcode & 0x90) != 0x90)) \
|
|
block_data[block_data_position].condition |= 0x20; \
|
|
break; \
|
|
\
|
|
case 0x05: \
|
|
case 0x07: \
|
|
case 0x11: \
|
|
case 0x13: \
|
|
case 0x15 ... 0x17: \
|
|
case 0x19: \
|
|
case 0x1B: \
|
|
case 0x1D: \
|
|
case 0x1F: \
|
|
if((opcode & 0x90) != 0x90) \
|
|
block_data[block_data_position].condition |= 0x20; \
|
|
break; \
|
|
\
|
|
case 0x12: \
|
|
if(((opcode & 0x90) != 0x90) && !(opcode & 0x10)) \
|
|
block_data[block_data_position].condition |= 0x20; \
|
|
break; \
|
|
\
|
|
case 0x21: \
|
|
case 0x23: \
|
|
case 0x25: \
|
|
case 0x27: \
|
|
case 0x29: \
|
|
case 0x2B: \
|
|
case 0x2D: \
|
|
case 0x2F ... 0x37: \
|
|
case 0x39: \
|
|
case 0x3B: \
|
|
case 0x3D: \
|
|
case 0x3F: \
|
|
block_data[block_data_position].condition |= 0x20; \
|
|
break; \
|
|
} \
|
|
|
|
#define arm_link_block() \
|
|
if(branch_target == 0x00000008) \
|
|
translation_target = bios_swi_entrypoint; \
|
|
else \
|
|
translation_target = block_lookup_address_arm(branch_target); \
|
|
|
|
#define arm_instruction_width 4
|
|
|
|
#define arm_base_cycles() \
|
|
cycle_count += waitstate_cycles_sequential[pc >> 24][2] \
|
|
|
|
// For now this just sets a variable that says flags should always be
|
|
// computed.
|
|
|
|
#define arm_dead_flag_eliminate() \
|
|
flag_status = 0xF \
|
|
|
|
// The following Thumb instructions can exit:
|
|
// b, bl, bx, swi, pop {... pc}, and mov pc, ..., the latter being a hireg
|
|
// op only. Rather simpler to identify than the ARM set.
|
|
|
|
#define thumb_exit_point \
|
|
(((opcode >= 0xD000) && (opcode < 0xDF00)) || \
|
|
(((opcode & 0xFF00) == 0xDF00) && \
|
|
(!is_div_swi(opcode & 0xFF))) || \
|
|
((opcode >= 0xE000) && (opcode < 0xE800)) || \
|
|
((opcode & 0xFF00) == 0x4700) || \
|
|
((opcode & 0xFF00) == 0xBD00) || \
|
|
((opcode & 0xFF87) == 0x4687) || \
|
|
((opcode >= 0xF800))) \
|
|
|
|
#define thumb_opcode_branch \
|
|
(((opcode >= 0xD000) && (opcode < 0xDF00)) || \
|
|
((opcode >= 0xE000) && (opcode < 0xE800)) || \
|
|
(opcode >= 0xF800)) \
|
|
|
|
#define thumb_opcode_swi \
|
|
((opcode & 0xFF00) == 0xDF00) \
|
|
|
|
#define thumb_opcode_unconditional_branch \
|
|
((opcode < 0xD000) || (opcode >= 0xDF00)) \
|
|
|
|
#define thumb_load_opcode() \
|
|
last_opcode = opcode; \
|
|
opcode = address16(pc_address_block, (block_end_pc & 0x7FFF)); \
|
|
\
|
|
block_end_pc += 2 \
|
|
|
|
#define thumb_branch_target() \
|
|
if(opcode < 0xE000) \
|
|
{ \
|
|
branch_target = block_end_pc + 2 + ((s8)(opcode & 0xFF) * 2); \
|
|
} \
|
|
else \
|
|
\
|
|
if(opcode < 0xF800) \
|
|
{ \
|
|
branch_target = block_end_pc + 2 + ((s32)((opcode & 0x7FF) << 21) >> 20); \
|
|
} \
|
|
else \
|
|
{ \
|
|
if((last_opcode >= 0xF000) && (last_opcode < 0xF800)) \
|
|
{ \
|
|
branch_target = \
|
|
(block_end_pc + ((s32)((last_opcode & 0x07FF) << 21) >> 9) + \
|
|
((opcode & 0x07FF) * 2)); \
|
|
} \
|
|
else \
|
|
{ \
|
|
goto no_direct_branch; \
|
|
} \
|
|
} \
|
|
|
|
#define thumb_set_condition(_condition) \
|
|
|
|
#define thumb_link_block() \
|
|
/* Speed hack to make SWI calls direct jumps */ \
|
|
if(branch_target == 0x00000008) \
|
|
translation_target = bios_swi_entrypoint; \
|
|
else \
|
|
translation_target = block_lookup_address_thumb(branch_target); \
|
|
|
|
#define thumb_instruction_width 2
|
|
|
|
#define thumb_base_cycles() \
|
|
cycle_count += waitstate_cycles_sequential[pc >> 24][1] \
|
|
|
|
// Here's how this works: each instruction has three different sets of flag
|
|
// attributes, each consisiting of a 4bit mask describing how that instruction
|
|
// interacts with the 4 main flags (N/Z/C/V).
|
|
// The first set, in bits 0:3, is the set of flags the instruction may
|
|
// modify. After this pass this is changed to the set of flags the instruction
|
|
// should modify - if the bit for the corresponding flag is not set then code
|
|
// does not have to be generated to calculate the flag for that instruction.
|
|
|
|
// The second set, in bits 7:4, is the set of flags that the instruction must
|
|
// modify (ie, for shifts by the register values the instruction may not
|
|
// always modify the C flag, and thus the C bit won't be set here).
|
|
|
|
// The third set, in bits 11:8, is the set of flags that the instruction uses
|
|
// in its computation, or the set of flags that will be needed after the
|
|
// instruction is done. For any instructions that change the PC all of the
|
|
// bits should be set because it is (for now) unknown what flags will be
|
|
// needed after it arrives at its destination. Instructions that use the
|
|
// carry flag as input will have it set as well.
|
|
|
|
// The algorithm is a simple liveness analysis procedure: It starts at the
|
|
// bottom of the instruction stream and sets a "currently needed" mask to
|
|
// the flags needed mask of the current instruction. Then it moves down
|
|
// an instruction, ANDs that instructions "should generate" mask by the
|
|
// "currently needed" mask, then ANDs the "currently needed" mask by
|
|
// the 1's complement of the instruction's "must generate" mask, and ORs
|
|
// the "currently needed" mask by the instruction's "flags needed" mask.
|
|
|
|
#define thumb_dead_flag_eliminate() \
|
|
{ \
|
|
u32 needed_mask = 0xff; \
|
|
\
|
|
while(--block_data_position >= 0) \
|
|
{ \
|
|
flag_status = block_data[block_data_position].flag_data; \
|
|
block_data[block_data_position].flag_data = \
|
|
(flag_status & needed_mask); \
|
|
needed_mask &= ~((flag_status >> 4) & 0x0F); \
|
|
needed_mask |= flag_status >> 8; \
|
|
} \
|
|
} \
|
|
|
|
#define MAX_BLOCK_SIZE 8192
|
|
#define MAX_EXITS 256
|
|
|
|
block_data_type block_data[MAX_BLOCK_SIZE];
|
|
block_exit_type block_exits[MAX_EXITS];
|
|
|
|
#define smc_write_arm_yes() { \
|
|
intptr_t offset = (pc < 0x03000000) ? 0x40000 : -0x8000; \
|
|
if(address32(pc_address_block, (block_end_pc & 0x7FFF) + offset) == 0) \
|
|
{ \
|
|
address32(pc_address_block, (block_end_pc & 0x7FFF) + offset) = \
|
|
CODE_TAG_BLOCK32; \
|
|
} \
|
|
}
|
|
|
|
#define smc_write_thumb_yes() { \
|
|
intptr_t offset = (pc < 0x03000000) ? 0x40000 : -0x8000; \
|
|
if(address16(pc_address_block, (block_end_pc & 0x7FFF) + offset) == 0) \
|
|
{ \
|
|
address16(pc_address_block, (block_end_pc & 0x7FFF) + offset) = \
|
|
CODE_TAG_BLOCK16; \
|
|
} \
|
|
}
|
|
|
|
#define smc_write_arm_no() \
|
|
|
|
#define smc_write_thumb_no() \
|
|
|
|
#define scan_block(type, smc_write_op) \
|
|
{ \
|
|
__label__ block_end; \
|
|
/* Find the end of the block */ \
|
|
do \
|
|
{ \
|
|
check_pc_region(block_end_pc); \
|
|
smc_write_##type##_##smc_write_op(); \
|
|
type##_load_opcode(); \
|
|
type##_flag_status(); \
|
|
\
|
|
if(type##_exit_point) \
|
|
{ \
|
|
/* Branch/branch with link */ \
|
|
if(type##_opcode_branch) \
|
|
{ \
|
|
__label__ no_direct_branch; \
|
|
type##_branch_target(); \
|
|
block_exits[block_exit_position].branch_target = branch_target; \
|
|
block_exit_position++; \
|
|
\
|
|
/* Give the branch target macro somewhere to bail if it turns out to \
|
|
be an indirect branch (ala malformed Thumb bl) */ \
|
|
no_direct_branch:; \
|
|
} \
|
|
\
|
|
/* SWI branches to the BIOS, unless it's an HLE call, then it is \
|
|
not parsed as an exit_point but rather an "instruction" of sorts. */ \
|
|
if(type##_opcode_swi) \
|
|
{ \
|
|
block_exits[block_exit_position].branch_target = 0x00000008; \
|
|
block_exit_position++; \
|
|
} \
|
|
\
|
|
type##_set_condition(condition | 0x10); \
|
|
\
|
|
/* Only unconditional branches can end the block. */ \
|
|
if(type##_opcode_unconditional_branch) \
|
|
{ \
|
|
/* Check to see if any prior block exits branch after here, \
|
|
if so don't end the block. Starts from the top and works \
|
|
down because the most recent branch is most likely to \
|
|
join after the end (if/then form) */ \
|
|
for(i = block_exit_position - 2; i >= 0; i--) \
|
|
{ \
|
|
if(block_exits[i].branch_target == block_end_pc) \
|
|
break; \
|
|
} \
|
|
\
|
|
if(i < 0) \
|
|
break; \
|
|
} \
|
|
if(block_exit_position == MAX_EXITS) \
|
|
break; \
|
|
} \
|
|
else \
|
|
{ \
|
|
type##_set_condition(condition); \
|
|
} \
|
|
\
|
|
for(i = 0; i < translation_gate_targets; i++) \
|
|
{ \
|
|
if(block_end_pc == translation_gate_target_pc[i]) \
|
|
goto block_end; \
|
|
} \
|
|
\
|
|
block_data[block_data_position].update_cycles = 0; \
|
|
block_data_position++; \
|
|
if((block_data_position == MAX_BLOCK_SIZE) || \
|
|
(block_end_pc == 0x3007FF0) || (block_end_pc == 0x203FFFF0)) \
|
|
{ \
|
|
break; \
|
|
} \
|
|
} while(1); \
|
|
\
|
|
block_end:; \
|
|
} \
|
|
|
|
#define arm_fix_pc() \
|
|
pc &= ~0x03 \
|
|
|
|
#define thumb_fix_pc() \
|
|
pc &= ~0x01 \
|
|
|
|
#define update_pc_limits() \
|
|
if (translation_region == TRANSLATION_REGION_RAM) { \
|
|
if (pc >= 0x3000000) { \
|
|
iwram_code_min = MIN(pc & 0x7FFF, iwram_code_min); \
|
|
iwram_code_max = MAX(pc & 0x7FFF, iwram_code_max); \
|
|
} else { \
|
|
ewram_code_min = MIN(pc & 0x3FFFF, ewram_code_min); \
|
|
ewram_code_max = MAX(pc & 0x3FFFF, ewram_code_max); \
|
|
} \
|
|
} \
|
|
|
|
s32 translate_block_arm(u32 pc, translation_region_type
|
|
translation_region, u32 smc_enable)
|
|
{
|
|
u32 opcode = 0;
|
|
u32 last_opcode;
|
|
u32 condition;
|
|
u32 last_condition;
|
|
u32 pc_region = (pc >> 15);
|
|
u32 new_pc_region;
|
|
u8 *pc_address_block = memory_map_read[pc_region];
|
|
u32 block_start_pc = pc;
|
|
u32 block_end_pc = pc;
|
|
u32 block_exit_position = 0;
|
|
s32 block_data_position = 0;
|
|
u32 external_block_exit_position = 0;
|
|
u32 branch_target;
|
|
u32 cycle_count = 0;
|
|
u8 *translation_target;
|
|
u8 *backpatch_address = NULL;
|
|
u8 *translation_ptr = NULL;
|
|
u8 *translation_cache_limit = NULL;
|
|
s32 i;
|
|
u32 flag_status;
|
|
block_exit_type external_block_exits[MAX_EXITS];
|
|
generate_block_extra_vars_arm();
|
|
arm_fix_pc();
|
|
|
|
if(!pc_address_block)
|
|
pc_address_block = load_gamepak_page(pc_region & 0x3FF);
|
|
|
|
switch(translation_region)
|
|
{
|
|
case TRANSLATION_REGION_RAM:
|
|
translation_ptr = ram_translation_ptr;
|
|
translation_cache_limit = &ram_translation_cache[
|
|
RAM_TRANSLATION_CACHE_SIZE - TRANSLATION_CACHE_LIMIT_THRESHOLD
|
|
- (0x10000 - ram_block_tag) / 2 * sizeof(ramtag_type)];
|
|
break;
|
|
|
|
case TRANSLATION_REGION_ROM:
|
|
translation_ptr = rom_translation_ptr;
|
|
translation_cache_limit =
|
|
rom_translation_cache + ROM_TRANSLATION_CACHE_SIZE -
|
|
TRANSLATION_CACHE_LIMIT_THRESHOLD;
|
|
break;
|
|
}
|
|
|
|
generate_block_prologue();
|
|
|
|
/* This is a function because it's used a lot more than it might seem (all
|
|
of the data processing functions can access it), and its expansion was
|
|
massacreing the compiler. */
|
|
|
|
if(smc_enable)
|
|
{
|
|
scan_block(arm, yes);
|
|
}
|
|
else
|
|
{
|
|
scan_block(arm, no);
|
|
}
|
|
|
|
for(i = 0; i < block_exit_position; i++)
|
|
{
|
|
branch_target = block_exits[i].branch_target;
|
|
|
|
if((branch_target > block_start_pc) &&
|
|
(branch_target < block_end_pc))
|
|
{
|
|
block_data[(branch_target - block_start_pc) /
|
|
arm_instruction_width].update_cycles = 1;
|
|
}
|
|
}
|
|
|
|
arm_dead_flag_eliminate();
|
|
|
|
block_exit_position = 0;
|
|
block_data_position = 0;
|
|
|
|
last_condition = 0x0E;
|
|
|
|
while(pc != block_end_pc)
|
|
{
|
|
block_data[block_data_position].block_offset = translation_ptr;
|
|
arm_base_cycles();
|
|
|
|
if (pc == cheat_master_hook)
|
|
{
|
|
arm_process_cheats();
|
|
}
|
|
|
|
update_pc_limits();
|
|
translate_arm_instruction();
|
|
block_data_position++;
|
|
|
|
/* If it went too far the cache needs to be flushed and the process
|
|
restarted. Because we might already be nested several stages in
|
|
a simple recursive call here won't work, it has to pedal out to
|
|
the beginning. */
|
|
|
|
if(translation_ptr > translation_cache_limit)
|
|
{
|
|
translation_flush_count++;
|
|
|
|
switch(translation_region)
|
|
{
|
|
case TRANSLATION_REGION_RAM:
|
|
flush_translation_cache_ram();
|
|
break;
|
|
|
|
case TRANSLATION_REGION_ROM:
|
|
flush_translation_cache_rom();
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* If the next instruction is a block entry point update the
|
|
cycle counter and update */
|
|
if (pc != block_end_pc &&
|
|
block_data[block_data_position].update_cycles)
|
|
{
|
|
generate_cycle_update();
|
|
}
|
|
}
|
|
|
|
/* This can happen if the last instruction is *not* inconditional */
|
|
if ((last_condition & 0x0F) != 0x0E) {
|
|
generate_branch_patch_conditional(backpatch_address, translation_ptr);
|
|
}
|
|
|
|
/* Unconditionally generate translation targets. In case we hit one or
|
|
in the unlikely case that block was too big (and not finalized) */
|
|
generate_translation_gate(arm);
|
|
|
|
for(i = 0; i < block_exit_position; i++)
|
|
{
|
|
branch_target = block_exits[i].branch_target;
|
|
|
|
if((branch_target >= block_start_pc) && (branch_target < block_end_pc))
|
|
{
|
|
/* Internal branch, patch to recorded address */
|
|
translation_target =
|
|
block_data[(branch_target - block_start_pc) /
|
|
arm_instruction_width].block_offset;
|
|
|
|
generate_branch_patch_unconditional(block_exits[i].branch_source,
|
|
translation_target);
|
|
}
|
|
else
|
|
{
|
|
/* External branch, save for later */
|
|
external_block_exits[external_block_exit_position].branch_target =
|
|
branch_target;
|
|
external_block_exits[external_block_exit_position].branch_source =
|
|
block_exits[i].branch_source;
|
|
external_block_exit_position++;
|
|
}
|
|
}
|
|
|
|
switch(translation_region)
|
|
{
|
|
case TRANSLATION_REGION_RAM:
|
|
ram_translation_ptr = translation_ptr;
|
|
break;
|
|
|
|
case TRANSLATION_REGION_ROM:
|
|
rom_translation_ptr = translation_ptr;
|
|
break;
|
|
}
|
|
|
|
for(i = 0; i < external_block_exit_position; i++)
|
|
{
|
|
branch_target = external_block_exits[i].branch_target;
|
|
arm_link_block();
|
|
if(!translation_target){
|
|
return -1;
|
|
}
|
|
generate_branch_patch_unconditional(
|
|
external_block_exits[i].branch_source, translation_target);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
s32 translate_block_thumb(u32 pc, translation_region_type
|
|
translation_region, u32 smc_enable)
|
|
{
|
|
u32 opcode = 0;
|
|
u32 last_opcode;
|
|
u32 condition;
|
|
u32 pc_region = (pc >> 15);
|
|
u32 new_pc_region;
|
|
u8 *pc_address_block = memory_map_read[pc_region];
|
|
u32 block_start_pc = pc;
|
|
u32 block_end_pc = pc;
|
|
u32 block_exit_position = 0;
|
|
s32 block_data_position = 0;
|
|
u32 external_block_exit_position = 0;
|
|
u32 branch_target;
|
|
u32 cycle_count = 0;
|
|
u8 *translation_target;
|
|
u8 *backpatch_address = NULL;
|
|
u8 *translation_ptr = NULL;
|
|
u8 *translation_cache_limit = NULL;
|
|
s32 i;
|
|
u32 flag_status;
|
|
block_exit_type external_block_exits[MAX_EXITS];
|
|
generate_block_extra_vars_thumb();
|
|
thumb_fix_pc();
|
|
|
|
if(!pc_address_block)
|
|
pc_address_block = load_gamepak_page(pc_region & 0x3FF);
|
|
|
|
switch(translation_region)
|
|
{
|
|
case TRANSLATION_REGION_RAM:
|
|
translation_ptr = ram_translation_ptr;
|
|
translation_cache_limit = &ram_translation_cache[
|
|
RAM_TRANSLATION_CACHE_SIZE - TRANSLATION_CACHE_LIMIT_THRESHOLD
|
|
- (0x10000 - ram_block_tag) / 2 * sizeof(ramtag_type)];
|
|
break;
|
|
|
|
case TRANSLATION_REGION_ROM:
|
|
translation_ptr = rom_translation_ptr;
|
|
translation_cache_limit =
|
|
rom_translation_cache + ROM_TRANSLATION_CACHE_SIZE -
|
|
TRANSLATION_CACHE_LIMIT_THRESHOLD;
|
|
break;
|
|
}
|
|
|
|
generate_block_prologue();
|
|
|
|
/* This is a function because it's used a lot more than it might seem (all
|
|
of the data processing functions can access it), and its expansion was
|
|
massacreing the compiler. */
|
|
|
|
if(smc_enable)
|
|
{
|
|
scan_block(thumb, yes);
|
|
}
|
|
else
|
|
{
|
|
scan_block(thumb, no);
|
|
}
|
|
|
|
for(i = 0; i < block_exit_position; i++)
|
|
{
|
|
branch_target = block_exits[i].branch_target;
|
|
|
|
if((branch_target > block_start_pc) &&
|
|
(branch_target < block_end_pc))
|
|
{
|
|
block_data[(branch_target - block_start_pc) /
|
|
thumb_instruction_width].update_cycles = 1;
|
|
}
|
|
}
|
|
|
|
thumb_dead_flag_eliminate();
|
|
|
|
block_exit_position = 0;
|
|
block_data_position = 0;
|
|
|
|
while(pc != block_end_pc)
|
|
{
|
|
block_data[block_data_position].block_offset = translation_ptr;
|
|
thumb_base_cycles();
|
|
|
|
if (pc == cheat_master_hook)
|
|
{
|
|
thumb_process_cheats();
|
|
}
|
|
|
|
update_pc_limits();
|
|
translate_thumb_instruction();
|
|
block_data_position++;
|
|
|
|
/* If it went too far the cache needs to be flushed and the process
|
|
restarted. Because we might already be nested several stages in
|
|
a simple recursive call here won't work, it has to pedal out to
|
|
the beginning. */
|
|
|
|
if(translation_ptr > translation_cache_limit)
|
|
{
|
|
translation_flush_count++;
|
|
|
|
switch(translation_region)
|
|
{
|
|
case TRANSLATION_REGION_RAM:
|
|
flush_translation_cache_ram();
|
|
break;
|
|
|
|
case TRANSLATION_REGION_ROM:
|
|
flush_translation_cache_rom();
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* If the next instruction is a block entry point update the
|
|
cycle counter and update */
|
|
if (pc != block_end_pc &&
|
|
block_data[block_data_position].update_cycles)
|
|
{
|
|
generate_cycle_update();
|
|
}
|
|
}
|
|
|
|
/* Unconditionally generate translation targets. In case we hit one or
|
|
in the unlikely case that block was too big (and not finalized) */
|
|
generate_translation_gate(thumb);
|
|
|
|
for(i = 0; i < block_exit_position; i++)
|
|
{
|
|
branch_target = block_exits[i].branch_target;
|
|
|
|
if((branch_target >= block_start_pc) && (branch_target < block_end_pc))
|
|
{
|
|
/* Internal branch, patch to recorded address */
|
|
translation_target =
|
|
block_data[(branch_target - block_start_pc) /
|
|
thumb_instruction_width].block_offset;
|
|
|
|
generate_branch_patch_unconditional(block_exits[i].branch_source,
|
|
translation_target);
|
|
}
|
|
else
|
|
{
|
|
/* External branch, save for later */
|
|
external_block_exits[external_block_exit_position].branch_target =
|
|
branch_target;
|
|
external_block_exits[external_block_exit_position].branch_source =
|
|
block_exits[i].branch_source;
|
|
external_block_exit_position++;
|
|
}
|
|
}
|
|
|
|
switch(translation_region)
|
|
{
|
|
case TRANSLATION_REGION_RAM:
|
|
ram_translation_ptr = translation_ptr;
|
|
break;
|
|
|
|
case TRANSLATION_REGION_ROM:
|
|
rom_translation_ptr = translation_ptr;
|
|
break;
|
|
}
|
|
|
|
for(i = 0; i < external_block_exit_position; i++)
|
|
{
|
|
branch_target = external_block_exits[i].branch_target;
|
|
thumb_link_block();
|
|
if(!translation_target){
|
|
return -1;
|
|
}
|
|
generate_branch_patch_unconditional(
|
|
external_block_exits[i].branch_source, translation_target);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void init_bios_hooks(void)
|
|
{
|
|
// Pre-generate this entry point so that we can safely invoke fast
|
|
// SWI calls from ROM and RAM regardless of cache flushes.
|
|
rom_translation_ptr = &rom_translation_cache[rom_cache_watermark];
|
|
last_rom_translation_ptr = rom_translation_ptr;
|
|
bios_swi_entrypoint = block_lookup_address_arm(0x8);
|
|
rom_cache_watermark = (u32)(rom_translation_ptr - rom_translation_cache);
|
|
}
|
|
|
|
void flush_translation_cache_ram(void)
|
|
{
|
|
flush_ram_count++;
|
|
/*printf("ram flush %d (pc %x), %x to %x, %x to %x\n",
|
|
flush_ram_count, reg[REG_PC], iwram_code_min, iwram_code_max,
|
|
ewram_code_min, ewram_code_max);*/
|
|
|
|
last_ram_translation_ptr = ram_translation_cache;
|
|
ram_translation_ptr = ram_translation_cache;
|
|
|
|
// Proceed to clean the SMC area if needed
|
|
// (also try to memset as little as possible for performance)
|
|
if (iwram_code_max) {
|
|
if(iwram_code_max > iwram_code_min) {
|
|
iwram_code_min &= ~15U;
|
|
iwram_code_max = MIN(iwram_code_max + 8, 0x8000);
|
|
memset(&iwram[iwram_code_min], 0, iwram_code_max - iwram_code_min);
|
|
} else
|
|
memset(iwram, 0, 0x8000);
|
|
}
|
|
|
|
if (ewram_code_max) {
|
|
if(ewram_code_max > ewram_code_min) {
|
|
ewram_code_min &= ~15U;
|
|
ewram_code_max = MIN(ewram_code_max + 8, 0x40000);
|
|
memset(&ewram[0x40000 + ewram_code_min], 0, ewram_code_max - ewram_code_min);
|
|
} else
|
|
memset(&ewram[0x40000], 0, 0x40000);
|
|
}
|
|
|
|
iwram_code_min = ~0U;
|
|
iwram_code_max = 0U;
|
|
ewram_code_min = ~0U;
|
|
ewram_code_max = 0U;
|
|
ram_block_tag = INITIAL_TOP_TAG;
|
|
}
|
|
|
|
void flush_translation_cache_rom(void)
|
|
{
|
|
last_rom_translation_ptr = &rom_translation_cache[rom_cache_watermark];
|
|
rom_translation_ptr = &rom_translation_cache[rom_cache_watermark];
|
|
|
|
memset(rom_branch_hash, 0, sizeof(rom_branch_hash));
|
|
}
|
|
|
|
void init_caches(void)
|
|
{
|
|
/* Ensure we wipe everything including the SMC mirrors */
|
|
flush_translation_cache_rom();
|
|
ewram_code_min = 0;
|
|
ewram_code_max = 0x40000;
|
|
iwram_code_min = 0;
|
|
iwram_code_max = 0x8000;
|
|
flush_translation_cache_ram();
|
|
}
|
|
|