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| author | Blue Swirl <blauwirbel@gmail.com> | 2009-05-10 07:19:11 +0000 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2009-05-10 07:19:11 +0000 |
| commit | 8393617c1a2a28e6e9efec2b517431c5d4aaab60 (patch) | |
| tree | 3314fd8eecf1cba4480f2be6f927eca54608355e /target-sparc/cpu.h | |
| parent | bc24a225af2464dc30f88d6f930779cbf0e22b67 (diff) | |
| download | qemu-8393617c1a2a28e6e9efec2b517431c5d4aaab60.tar.gz | |
Use dynamical computation for condition codes
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'target-sparc/cpu.h')
| -rw-r--r-- | target-sparc/cpu.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h index 8b847897ef..32b45f9496 100644 --- a/target-sparc/cpu.h +++ b/target-sparc/cpu.h @@ -92,6 +92,27 @@ #define PSR_ET (1<<5) #define PSR_CWP 0x1f +#define CC_SRC (env->cc_src) +#define CC_SRC2 (env->cc_src2) +#define CC_DST (env->cc_dst) +#define CC_OP (env->cc_op) + +enum { + CC_OP_DYNAMIC, /* must use dynamic code to get cc_op */ + CC_OP_FLAGS, /* all cc are back in status register */ + CC_OP_DIV, /* modify N, Z and V, C = 0*/ + CC_OP_ADD, /* modify all flags, CC_DST = res, CC_SRC = src1 */ + CC_OP_ADDX, /* modify all flags, CC_DST = res, CC_SRC = src1 */ + CC_OP_TADD, /* modify all flags, CC_DST = res, CC_SRC = src1 */ + CC_OP_TADDTV, /* modify all flags except V, CC_DST = res, CC_SRC = src1 */ + CC_OP_SUB, /* modify all flags, CC_DST = res, CC_SRC = src1 */ + CC_OP_SUBX, /* modify all flags, CC_DST = res, CC_SRC = src1 */ + CC_OP_TSUB, /* modify all flags, CC_DST = res, CC_SRC = src1 */ + CC_OP_TSUBTV, /* modify all flags except V, CC_DST = res, CC_SRC = src1 */ + CC_OP_LOGIC, /* modify N and Z, C = V = 0, CC_DST = res */ + CC_OP_NB, +}; + /* Trap base register */ #define TBR_BASE_MASK 0xfffff000 @@ -261,6 +282,7 @@ typedef struct CPUSPARCState { /* emulator internal flags handling */ target_ulong cc_src, cc_src2; target_ulong cc_dst; + uint32_t cc_op; target_ulong t0, t1; /* temporaries live across basic blocks */ target_ulong cond; /* conditional branch result (XXX: save it in a @@ -413,6 +435,7 @@ static inline int cpu_cwp_dec(CPUSPARCState *env1, int cwp) env->psrps = (_tmp & PSR_PS)? 1 : 0; \ env->psret = (_tmp & PSR_ET)? 1 : 0; \ cpu_set_cwp(env, _tmp & PSR_CWP); \ + CC_OP = CC_OP_FLAGS; \ } while (0) #ifdef TARGET_SPARC64 @@ -420,6 +443,7 @@ static inline int cpu_cwp_dec(CPUSPARCState *env1, int cwp) #define PUT_CCR(env, val) do { int _tmp = val; \ env->xcc = (_tmp >> 4) << 20; \ env->psr = (_tmp & 0xf) << 20; \ + CC_OP = CC_OP_FLAGS; \ } while (0) #define GET_CWP64(env) (env->nwindows - 1 - (env)->cwp) |