ShuriZma
/
mgba
mirror of https://github.com/mgba-emu/mgba.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Implement MUL

This commit is contained in:
Jeffrey Pfau 2013-04-18 01:35:48 -07:00
parent 783b2a3e09
commit 5f1f6088bd
1 changed files with 18 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/arm/isa-arm.c
View File

@ -303,6 +303,23 @@ void ARMStep(struct ARMCore* cpu) {
DEFINE_ALU_INSTRUCTION_EX_ARM(NAME ## _RORR, S_BODY, _shiftRORR, BODY, POST_BODY) \
DEFINE_ALU_INSTRUCTION_EX_ARM(NAME ## I, S_BODY, _immediate, BODY, POST_BODY)
#define DEFINE_MULTIPLY_INSTRUCTION_EX_ARM(NAME, BODY, S_BODY) \
DEFINE_INSTRUCTION_ARM(NAME, \
int rd = (opcode >> 12) & 0xF; \
int rdHi = (opcode >> 16) & 0xF; \
int rs = (opcode >> 8) & 0xF; \
int rm = opcode & 0xF; \
UNUSED(rdHi); \
BODY; \
S_BODY; \
if (rd == ARM_PC) { \
ARM_WRITE_PC; \
})
#define DEFINE_MULTIPLY_INSTRUCTION_ARM(NAME, BODY, S_BODY) \
DEFINE_MULTIPLY_INSTRUCTION_EX_ARM(NAME, BODY, ) \
DEFINE_MULTIPLY_INSTRUCTION_EX_ARM(NAME ## S, BODY, S_BODY)
#define DEFINE_LOAD_STORE_INSTRUCTION_EX_ARM(NAME, ADDRESS, WRITEBACK, BODY) \
DEFINE_INSTRUCTION_ARM(NAME, \
uint32_t address; \
@ -482,8 +499,7 @@ DEFINE_ALU_INSTRUCTION_S_ONLY_ARM(TST, ARM_NEUTRAL_S(cpu->gprs[rn], cpu->shifter
DEFINE_INSTRUCTION_ARM(MLA, ARM_STUB)
DEFINE_INSTRUCTION_ARM(MLAS, ARM_STUB)
DEFINE_INSTRUCTION_ARM(MUL, ARM_STUB)
DEFINE_INSTRUCTION_ARM(MULS, ARM_STUB)
DEFINE_MULTIPLY_INSTRUCTION_ARM(MUL, cpu->gprs[rd] = cpu->gprs[rm] * cpu->gprs[rs], ARM_NEUTRAL_S(cpu->gprs[rm], cpu->gprs[rs], cpu->gprs[rd]))
DEFINE_INSTRUCTION_ARM(SMLAL, ARM_STUB)
DEFINE_INSTRUCTION_ARM(SMLALS, ARM_STUB)
DEFINE_INSTRUCTION_ARM(SMULL, ARM_STUB)