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Implement BL

This commit is contained in:
Jeffrey Pfau 2013-04-27 02:54:16 -07:00
parent 21b9222357
commit 6c44cf8dfc
1 changed files with 6 additions and 1 deletions
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7
src/arm/isa-arm.c
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@ -588,7 +588,12 @@ DEFINE_INSTRUCTION_ARM(B,
cpu->gprs[ARM_PC] += offset;
ARM_WRITE_PC;)
DEFINE_INSTRUCTION_ARM(BL, ARM_STUB)
DEFINE_INSTRUCTION_ARM(BL,
int32_t immediate = (opcode & 0x00FFFFFF) << 8;
cpu->gprs[ARM_LR] = cpu->gprs[ARM_PC] - WORD_SIZE_ARM;
cpu->gprs[ARM_PC] += immediate >> 6;
ARM_WRITE_PC;)
DEFINE_INSTRUCTION_ARM(BX,
int rm = opcode & 0x0000000F;
_ARMSetMode(cpu, cpu->gprs[rm] & 0x00000001);