diff options
| author | Richard Henderson <rth@twiddle.net> | 2015-08-14 07:59:20 -0700 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2016-10-25 20:54:47 +0200 |
| commit | 620c6cf66584bfbee90db84a7e87a6eabf230ca9 (patch) | |
| tree | 681936c50972ff25b385e52507b374dfd0240646 /target-m68k/op_helper.c | |
| parent | 18dd87f26bed46f22bb1b9536329c02de500f407 (diff) | |
target-m68k: Reorg flags handling
Separate all ccr bits. Continue to batch updates via cc_op.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Fix gen_logic_cc() to really extend the size of the result.
Fix gen_get_ccr(): update cc_op as it is used by the helper.
Factorize flags computing and src/ccr cleanup
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
target-m68k: sr/ccr cleanup
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'target-m68k/op_helper.c')
| -rw-r--r-- | target-m68k/op_helper.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/target-m68k/op_helper.c b/target-m68k/op_helper.c index af361776a6..48e02e4062 100644 --- a/target-m68k/op_helper.c +++ b/target-m68k/op_helper.c @@ -185,7 +185,6 @@ void HELPER(divu)(CPUM68KState *env, uint32_t word) uint32_t den; uint32_t quot; uint32_t rem; - uint32_t flags; num = env->div1; den = env->div2; @@ -195,16 +194,14 @@ void HELPER(divu)(CPUM68KState *env, uint32_t word) } quot = num / den; rem = num % den; - flags = 0; - if (word && quot > 0xffff) - flags |= CCF_V; - if (quot == 0) - flags |= CCF_Z; - else if ((int32_t)quot < 0) - flags |= CCF_N; + + env->cc_v = (word && quot > 0xffff ? -1 : 0); + env->cc_z = quot; + env->cc_n = quot; + env->cc_c = 0; + env->div1 = quot; env->div2 = rem; - env->cc_dest = flags; } void HELPER(divs)(CPUM68KState *env, uint32_t word) @@ -213,7 +210,6 @@ void HELPER(divs)(CPUM68KState *env, uint32_t word) int32_t den; int32_t quot; int32_t rem; - int32_t flags; num = env->div1; den = env->div2; @@ -222,14 +218,12 @@ void HELPER(divs)(CPUM68KState *env, uint32_t word) } quot = num / den; rem = num % den; - flags = 0; - if (word && quot != (int16_t)quot) - flags |= CCF_V; - if (quot == 0) - flags |= CCF_Z; - else if (quot < 0) - flags |= CCF_N; + + env->cc_v = (word && quot != (int16_t)quot ? -1 : 0); + env->cc_z = quot; + env->cc_n = quot; + env->cc_c = 0; + env->div1 = quot; env->div2 = rem; - env->cc_dest = flags; } |