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Macro-insanity for Thumb

This commit is contained in:
Jeffrey Pfau 2013-04-09 03:15:50 -07:00
parent 76dbfce3c3
commit 2618c39a5d
1 changed files with 60 additions and 26 deletions
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86
src/isa-thumb.c
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@ -3,40 +3,55 @@
static const ThumbInstruction _thumbTable[0x400]; static const ThumbInstruction _thumbTable[0x400];
// Instruction definitions // Instruction definitions
// Beware pre-processor insanity
#define APPLY(F, ...) F(__VA_ARGS__) #define APPLY(F, ...) F(__VA_ARGS__)
#define DUMMY(...) __VA_ARGS__
#define COUNT_1(EMITTER, PREFIX, ...) \ #define COUNT_1(EMITTER, PREFIX, ...) \
EMITTER(PREFIX ## 0, __VA_ARGS__) \ EMITTER(PREFIX ## 0, 0, __VA_ARGS__) \
EMITTER(PREFIX ## 1, __VA_ARGS__) EMITTER(PREFIX ## 1, 1, __VA_ARGS__)
#define COUNT_2(EMITTER, PREFIX, ...) \ #define COUNT_2(EMITTER, PREFIX, ...) \
COUNT_1(EMITTER, PREFIX, __VA_ARGS__) \ COUNT_1(EMITTER, PREFIX, __VA_ARGS__) \
EMITTER(PREFIX ## 2, __VA_ARGS__) \ EMITTER(PREFIX ## 2, 2, __VA_ARGS__) \
EMITTER(PREFIX ## 3, __VA_ARGS__) EMITTER(PREFIX ## 3, 3, __VA_ARGS__)
#define COUNT_3(EMITTER, PREFIX, ...) \ #define COUNT_3(EMITTER, PREFIX, ...) \
COUNT_2(EMITTER, PREFIX, __VA_ARGS__) \ COUNT_2(EMITTER, PREFIX, __VA_ARGS__) \
EMITTER(PREFIX ## 4, __VA_ARGS__) \ EMITTER(PREFIX ## 4, 4, __VA_ARGS__) \
EMITTER(PREFIX ## 5, __VA_ARGS__) \ EMITTER(PREFIX ## 5, 5, __VA_ARGS__) \
EMITTER(PREFIX ## 6, __VA_ARGS__) \ EMITTER(PREFIX ## 6, 6, __VA_ARGS__) \
EMITTER(PREFIX ## 7, __VA_ARGS__) EMITTER(PREFIX ## 7, 7, __VA_ARGS__)
#define COUNT_4(EMITTER, PREFIX, ...) \ #define COUNT_4(EMITTER, PREFIX, ...) \
COUNT_3(EMITTER, PREFIX, __VA_ARGS__) \ COUNT_3(EMITTER, PREFIX, __VA_ARGS__) \
EMITTER(PREFIX ## 8, __VA_ARGS__) \ EMITTER(PREFIX ## 8, 8, __VA_ARGS__) \
EMITTER(PREFIX ## 9, __VA_ARGS__) \ EMITTER(PREFIX ## 9, 9, __VA_ARGS__) \
EMITTER(PREFIX ## A, __VA_ARGS__) \ EMITTER(PREFIX ## A, 10, __VA_ARGS__) \
EMITTER(PREFIX ## B, __VA_ARGS__) \ EMITTER(PREFIX ## B, 11, __VA_ARGS__) \
EMITTER(PREFIX ## C, __VA_ARGS__) \ EMITTER(PREFIX ## C, 12, __VA_ARGS__) \
EMITTER(PREFIX ## D, __VA_ARGS__) \ EMITTER(PREFIX ## D, 13, __VA_ARGS__) \
EMITTER(PREFIX ## E, __VA_ARGS__) \ EMITTER(PREFIX ## E, 14, __VA_ARGS__) \
EMITTER(PREFIX ## F, __VA_ARGS__) EMITTER(PREFIX ## F, 15, __VA_ARGS__)
#define COUNT_5(EMITTER, PREFIX, ...) \ #define COUNT_5(EMITTER, PREFIX, ...) \
COUNT_4(EMITTER, PREFIX ## 0, __VA_ARGS__) \ COUNT_4(EMITTER, PREFIX ## 0, __VA_ARGS__) \
COUNT_4(EMITTER, PREFIX ## 1, __VA_ARGS__) EMITTER(PREFIX ## 10, 16, __VA_ARGS__) \
EMITTER(PREFIX ## 11, 17, __VA_ARGS__) \
EMITTER(PREFIX ## 12, 18, __VA_ARGS__) \
EMITTER(PREFIX ## 13, 19, __VA_ARGS__) \
EMITTER(PREFIX ## 14, 20, __VA_ARGS__) \
EMITTER(PREFIX ## 15, 21, __VA_ARGS__) \
EMITTER(PREFIX ## 16, 22, __VA_ARGS__) \
EMITTER(PREFIX ## 17, 23, __VA_ARGS__) \
EMITTER(PREFIX ## 18, 24, __VA_ARGS__) \
EMITTER(PREFIX ## 19, 25, __VA_ARGS__) \
EMITTER(PREFIX ## 1A, 26, __VA_ARGS__) \
EMITTER(PREFIX ## 1B, 27, __VA_ARGS__) \
EMITTER(PREFIX ## 1C, 28, __VA_ARGS__) \
EMITTER(PREFIX ## 1D, 29, __VA_ARGS__) \
EMITTER(PREFIX ## 1E, 30, __VA_ARGS__) \
EMITTER(PREFIX ## 1F, 31, __VA_ARGS__) \
#define THUMB_WRITE_PC \ #define THUMB_WRITE_PC \
cpu->gprs[ARM_PC] = (cpu->gprs[ARM_PC] & -WORD_SIZE_THUMB) + WORD_SIZE_THUMB cpu->gprs[ARM_PC] = (cpu->gprs[ARM_PC] & -WORD_SIZE_THUMB) + WORD_SIZE_THUMB
@ -46,20 +61,39 @@ static const ThumbInstruction _thumbTable[0x400];
BODY; \ BODY; \
} }
#define DEFINE_SHIFT_INSTRUCTION_THUMB(NAME, BODY) \ #define DEFINE_SHIFT_1_INSTRUCTION_EX_THUMB(NAME, IMMEDIATE, BODY) \
COUNT_5(DEFINE_INSTRUCTION_THUMB, NAME ## _, BODY) DEFINE_INSTRUCTION_THUMB(NAME, \
int immediate = IMMEDIATE; \
BODY;)
DEFINE_SHIFT_INSTRUCTION_THUMB(LSL, ) #define DEFINE_SHIFT_1_INSTRUCTION_THUMB(NAME, BODY) \
DEFINE_SHIFT_INSTRUCTION_THUMB(LSR, ) COUNT_5(DEFINE_SHIFT_1_INSTRUCTION_EX_THUMB, NAME ## 1_, BODY)
DEFINE_SHIFT_INSTRUCTION_THUMB(ASR, )
DEFINE_SHIFT_1_INSTRUCTION_THUMB(LSL, )
DEFINE_SHIFT_1_INSTRUCTION_THUMB(LSR, )
DEFINE_SHIFT_1_INSTRUCTION_THUMB(ASR, )
#define DEFINE_ADD_SUB_3_INSTRUCTION_EX_THUMB(NAME, RM, BODY) \
DEFINE_INSTRUCTION_THUMB(NAME, \
int rm = RM; \
BODY;)
#define DEFINE_ADD_SUB_3_INSTRUCTION_THUMB(NAME, BODY) \
COUNT_3(DEFINE_ADD_SUB_3_INSTRUCTION_EX_THUMB, NAME ## 3_R, BODY)
DEFINE_ADD_SUB_3_INSTRUCTION_THUMB(ADD, )
DEFINE_ADD_SUB_3_INSTRUCTION_THUMB(SUB, )
#define DECLARE_INSTRUCTION_THUMB(EMITTER, NAME) \ #define DECLARE_INSTRUCTION_THUMB(EMITTER, NAME) \
EMITTER ## NAME EMITTER ## NAME
#define DUMMY(X, ...) X,
#define DECLARE_THUMB_EMITTER_BLOCK(EMITTER) \ #define DECLARE_THUMB_EMITTER_BLOCK(EMITTER) \
APPLY(COUNT_5, DUMMY, DECLARE_INSTRUCTION_THUMB(EMITTER, LSL_)) \ APPLY(COUNT_5, DUMMY, DECLARE_INSTRUCTION_THUMB(EMITTER, LSL1_)) \
APPLY(COUNT_5, DUMMY, DECLARE_INSTRUCTION_THUMB(EMITTER, LSR_)) \ APPLY(COUNT_5, DUMMY, DECLARE_INSTRUCTION_THUMB(EMITTER, LSR1_)) \
APPLY(COUNT_5, DUMMY, DECLARE_INSTRUCTION_THUMB(EMITTER, ASR_)) \ APPLY(COUNT_5, DUMMY, DECLARE_INSTRUCTION_THUMB(EMITTER, ASR1_)) \
APPLY(COUNT_3, DUMMY, DECLARE_INSTRUCTION_THUMB(EMITTER, ADD3_R)) \
APPLY(COUNT_3, DUMMY, DECLARE_INSTRUCTION_THUMB(EMITTER, SUB3_R)) \
static const ThumbInstruction _thumbTable[0x400] = { static const ThumbInstruction _thumbTable[0x400] = {
DECLARE_THUMB_EMITTER_BLOCK(_ThumbInstruction) DECLARE_THUMB_EMITTER_BLOCK(_ThumbInstruction)