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CPU interpreter - group Thumb opcode case ranges 0x20 - 0x27 together

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This commit is contained in:
twinaphex 2014-12-12 06:31:16 +01:00
parent f9079ff9fb
commit ade2bed514
1 changed files with 4 additions and 23 deletions
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27
cpu.c
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@ -1656,6 +1656,7 @@ void execute_arm(u32 cycles)
cpu_alert_type cpu_alert;
u32 old_pc;
u32 thumb_opcode_val = 0, arm_opcode_val = 0;
if(!pc_address_block)
pc_address_block = load_gamepak_page(pc_region & 0x3FF);
@ -3261,8 +3262,9 @@ thumb_loop:
check_pc_region();
pc &= ~0x01;
opcode = address16(pc_address_block, (pc & 0x7FFF));
thumb_opcode_val = (opcode >> 8) & 0xFF;
switch((opcode >> 8) & 0xFF)
switch(thumb_opcode_val)
{
case 0x00 ... 0x07:
/* LSL rd, rs, offset */
@ -3301,42 +3303,21 @@ thumb_loop:
case 0x20:
/* MOV r0, imm */
thumb_logic(imm, 0, imm);
break;
case 0x21:
/* MOV r1, imm */
thumb_logic(imm, 1, imm);
break;
case 0x22:
/* MOV r2, imm */
thumb_logic(imm, 2, imm);
break;
case 0x23:
/* MOV r3, imm */
thumb_logic(imm, 3, imm);
break;
case 0x24:
/* MOV r4, imm */
thumb_logic(imm, 4, imm);
break;
case 0x25:
/* MOV r5, imm */
thumb_logic(imm, 5, imm);
break;
case 0x26:
/* MOV r6, imm */
thumb_logic(imm, 6, imm);
break;
case 0x27:
/* MOV r7, imm */
thumb_logic(imm, 7, imm);
thumb_logic(imm, thumb_opcode_val - 0x20, imm);
break;
case 0x28: