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arm_dyncom_thumb: Implement SXTH, SXTB, UXTH, and UXTB.

This commit is contained in:
Lioncash 2015-05-31 04:42:39 -04:00
parent b64dea80ce
commit 7caef19c89
1 changed files with 11 additions and 0 deletions
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11
src/core/arm/dyncom/arm_dyncom_thumb.cpp
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@ -276,6 +276,17 @@ tdstate thumb_translate(u32 addr, u32 instr, u32* ainstr, u32* inst_size) {
|(tinstr & 0x007F); // off7
} else if ((tinstr & 0x0F00) == 0x0e00) {
*ainstr = 0xEF000000 | 0x180000; // base | BKPT mask
} else if ((tinstr & 0x0F00) == 0x0200) {
static const ARMword subset[4] = {
0xE6BF0070, // SXTH
0xE6AF0070, // SXTB
0xE6FF0070, // UXTH
0xE6EF0070, // UXTB
};
*ainstr = subset[BITS(tinstr, 6, 7)] // base
| (BITS(tinstr, 0, 2) << 12) // Rd
| BITS(tinstr, 3, 5); // Rm
} else if ((tinstr & 0x0F00) == 0x0a00) {
static const ARMword subset[3] = {
0xE6BF0F30, // REV