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Implement ADD(2)

This commit is contained in:
Jeffrey Pfau 2013-04-12 21:48:19 -07:00
parent b5182915d7
commit 3e57e46046
1 changed files with 11 additions and 1 deletions
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12
src/isa-thumb.c
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@ -16,6 +16,12 @@ void ThumbStep(struct ARMCore* cpu) {
// Instruction definitions
// Beware pre-processor insanity
#define THUMB_ADDITION_S(M, N, D) \
cpu->cpsr.n = ARM_SIGN(D); \
cpu->cpsr.z = !(D); \
cpu->cpsr.c = ARM_CARRY_FROM(M, N, D); \
cpu->cpsr.v = ARM_V_ADDITION(M, N, D); \
#define THUMB_NEUTRAL_S(M, N, D) \
cpu->cpsr.n = ARM_SIGN(D); \
cpu->cpsr.z = !(D);
@ -133,7 +139,11 @@ DEFINE_DATA_FORM_2_INSTRUCTION_THUMB(SUB, ARM_STUB)
#define DEFINE_DATA_FORM_3_INSTRUCTION_THUMB(NAME, BODY) \
COUNT_3(DEFINE_DATA_FORM_3_INSTRUCTION_EX_THUMB, NAME ## _R, BODY)
DEFINE_DATA_FORM_3_INSTRUCTION_THUMB(ADD2, ARM_STUB)
DEFINE_DATA_FORM_3_INSTRUCTION_THUMB(ADD2, \
int d = cpu->gprs[rd]; \
cpu->gprs[rd] = d + immediate; \
THUMB_ADDITION_S(d, immediate, cpu->gprs[rd]))
DEFINE_DATA_FORM_3_INSTRUCTION_THUMB(CMP1, ARM_STUB)
DEFINE_DATA_FORM_3_INSTRUCTION_THUMB(MOV1, cpu->gprs[rd] = immediate; THUMB_NEUTRAL_S(, , cpu->gprs[rd]))
DEFINE_DATA_FORM_3_INSTRUCTION_THUMB(SUB2, ARM_STUB)