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| author | Aurelien Jarno <aurelien@aurel32.net> | 2011-04-20 13:04:23 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-04-25 11:18:33 +0200 |
| commit | c2ef9a83be8a176802c33db7f826ff30a18b50f3 (patch) | |
| tree | d88f1a2b2afebd761830694785bb967a424c905d /target-i386 | |
| parent | fec05e429943a2486ebe4c65da7b46a90f2dcfb2 (diff) | |
| download | qemu-c2ef9a83be8a176802c33db7f826ff30a18b50f3.zip | |
target-i386: replace approx_rsqrt and approx_rcp by softfloat ops
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/op_helper.c | 10 | ||||
| -rw-r--r-- | target-i386/ops_sse.h | 36 |
2 files changed, 24 insertions, 22 deletions
diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c index 589a68bc71..f7cdaaa222 100644 --- a/target-i386/op_helper.c +++ b/target-i386/op_helper.c @@ -4794,16 +4794,6 @@ void helper_boundl(target_ulong a0, int v) } } -static float approx_rsqrt(float a) -{ - return 1.0 / sqrt(a); -} - -static float approx_rcp(float a) -{ - return 1.0 / a; -} - #if !defined(CONFIG_USER_ONLY) #define MMUSUFFIX _mmu diff --git a/target-i386/ops_sse.h b/target-i386/ops_sse.h index ac0f150070..703be99cd2 100644 --- a/target-i386/ops_sse.h +++ b/target-i386/ops_sse.h @@ -778,28 +778,38 @@ int64_t helper_cvttsd2sq(XMMReg *s) void helper_rsqrtps(XMMReg *d, XMMReg *s) { - d->XMM_S(0) = approx_rsqrt(s->XMM_S(0)); - d->XMM_S(1) = approx_rsqrt(s->XMM_S(1)); - d->XMM_S(2) = approx_rsqrt(s->XMM_S(2)); - d->XMM_S(3) = approx_rsqrt(s->XMM_S(3)); + d->XMM_S(0) = float32_div(float32_one, + float32_sqrt(s->XMM_S(0), &env->sse_status), + &env->sse_status); + d->XMM_S(1) = float32_div(float32_one, + float32_sqrt(s->XMM_S(1), &env->sse_status), + &env->sse_status); + d->XMM_S(2) = float32_div(float32_one, + float32_sqrt(s->XMM_S(2), &env->sse_status), + &env->sse_status); + d->XMM_S(3) = float32_div(float32_one, + float32_sqrt(s->XMM_S(3), &env->sse_status), + &env->sse_status); } void helper_rsqrtss(XMMReg *d, XMMReg *s) { - d->XMM_S(0) = approx_rsqrt(s->XMM_S(0)); + d->XMM_S(0) = float32_div(float32_one, + float32_sqrt(s->XMM_S(0), &env->sse_status), + &env->sse_status); } void helper_rcpps(XMMReg *d, XMMReg *s) { - d->XMM_S(0) = approx_rcp(s->XMM_S(0)); - d->XMM_S(1) = approx_rcp(s->XMM_S(1)); - d->XMM_S(2) = approx_rcp(s->XMM_S(2)); - d->XMM_S(3) = approx_rcp(s->XMM_S(3)); + d->XMM_S(0) = float32_div(float32_one, s->XMM_S(0), &env->sse_status); + d->XMM_S(1) = float32_div(float32_one, s->XMM_S(1), &env->sse_status); + d->XMM_S(2) = float32_div(float32_one, s->XMM_S(2), &env->sse_status); + d->XMM_S(3) = float32_div(float32_one, s->XMM_S(3), &env->sse_status); } void helper_rcpss(XMMReg *d, XMMReg *s) { - d->XMM_S(0) = approx_rcp(s->XMM_S(0)); + d->XMM_S(0) = float32_div(float32_one, s->XMM_S(0), &env->sse_status); } static inline uint64_t helper_extrq(uint64_t src, int shift, int len) @@ -1272,14 +1282,16 @@ void helper_pfpnacc(MMXReg *d, MMXReg *s) void helper_pfrcp(MMXReg *d, MMXReg *s) { - d->MMX_S(0) = approx_rcp(s->MMX_S(0)); + d->MMX_S(0) = float32_div(float32_one, s->MMX_S(0), &env->mmx_status); d->MMX_S(1) = d->MMX_S(0); } void helper_pfrsqrt(MMXReg *d, MMXReg *s) { d->MMX_L(1) = s->MMX_L(0) & 0x7fffffff; - d->MMX_S(1) = approx_rsqrt(d->MMX_S(1)); + d->MMX_S(1) = float32_div(float32_one, + float32_sqrt(d->MMX_S(1), &env->mmx_status), + &env->mmx_status); d->MMX_L(1) |= s->MMX_L(0) & 0x80000000; d->MMX_L(0) = d->MMX_L(1); } |