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various small fixes and optimsations

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This commit is contained in:
kub 2019-08-16 15:14:41 +02:00
parent b90e104fc9
commit 8284ab7107
9 changed files with 39 additions and 27 deletions
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5
cpu/drc/emit_mips.c
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@ -394,7 +394,7 @@ int emith_flg_noV; // V flag known not to be set
// NB: for adcf and sbcf, carry-in must be dealt with separately (see there)
static void emith_set_arith_flags(int rd, int rt, int rs, s32 imm, int sub)
{
if (sub && rd == FNZ && rt && rs) // is this cmp_r_r?
if (sub && rd == FNZ && rt > AT && rs > AT) // is this cmp_r_r?
emith_flg_rs = rs, emith_flg_rt = rt;
else emith_flg_rs = emith_flg_rt = 0;
@ -858,7 +858,7 @@ static void emith_log_imm(int op, int rd, int rs, u32 imm)
// NB: mips32r2 has EXT and INS
#define emith_clear_msb(d, s, count) /* bits to clear */ do { \
u32 t; \
if ((count) > 16) { \
if ((count) >= 16) { \
t = (count) - 16; \
t = 0xffff >> t; \
emith_and_r_r_imm(d, s, t); \
@ -1262,6 +1262,7 @@ static int emith_cond_check(int cond, int *r)
// NB: mips32r2 has SYNCI
#define host_instructions_updated(base, end) __builtin___clear_cache(base, end)
#define emith_jump_patch_size() 4
#define emith_rw_offs_max() 0x7fff
// SH2 drc specific
#define emith_sh2_drc_entry() do { \