diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2019-02-15 09:56:40 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-02-15 09:56:40 +0000 |
| commit | 55a889456ef78f3f9b8eae9846c2f1453b1dd77b (patch) | |
| tree | 78ed522f9fc9a7a2fb69f58a261f5be5949f4907 | |
| parent | ec527e4eeccc31e3beadf3b61b66c61bbd873811 (diff) | |
target/arm: Split out flags setting from vfp compares
Minimize the code within a macro by splitting out a helper function.
Use deposit32 instead of manual bit manipulation.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190209033847.9014-9-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | target/arm/helper.c | 45 |
1 files changed, 27 insertions, 18 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 8eedce113c..28e45f0f0b 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -12871,31 +12871,40 @@ float64 VFP_HELPER(sqrt, d)(float64 a, CPUARMState *env) return float64_sqrt(a, &env->vfp.fp_status); } +static void softfloat_to_vfp_compare(CPUARMState *env, int cmp) +{ + uint32_t flags; + switch (cmp) { + case float_relation_equal: + flags = 0x6; + break; + case float_relation_less: + flags = 0x8; + break; + case float_relation_greater: + flags = 0x2; + break; + case float_relation_unordered: + flags = 0x3; + break; + default: + g_assert_not_reached(); + } + env->vfp.xregs[ARM_VFP_FPSCR] = + deposit32(env->vfp.xregs[ARM_VFP_FPSCR], 28, 4, flags); +} + /* XXX: check quiet/signaling case */ #define DO_VFP_cmp(p, type) \ void VFP_HELPER(cmp, p)(type a, type b, CPUARMState *env) \ { \ - uint32_t flags; \ - switch(type ## _compare_quiet(a, b, &env->vfp.fp_status)) { \ - case 0: flags = 0x6; break; \ - case -1: flags = 0x8; break; \ - case 1: flags = 0x2; break; \ - default: case 2: flags = 0x3; break; \ - } \ - env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ - | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ + softfloat_to_vfp_compare(env, \ + type ## _compare_quiet(a, b, &env->vfp.fp_status)); \ } \ void VFP_HELPER(cmpe, p)(type a, type b, CPUARMState *env) \ { \ - uint32_t flags; \ - switch(type ## _compare(a, b, &env->vfp.fp_status)) { \ - case 0: flags = 0x6; break; \ - case -1: flags = 0x8; break; \ - case 1: flags = 0x2; break; \ - default: case 2: flags = 0x3; break; \ - } \ - env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \ - | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \ + softfloat_to_vfp_compare(env, \ + type ## _compare(a, b, &env->vfp.fp_status)); \ } DO_VFP_cmp(s, float32) DO_VFP_cmp(d, float64) |