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From a13c0819ef14120a0e30077fcc6a7470409fa732 Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Fri, 17 Dec 2021 17:57:14 +0100
Subject: [PATCH 08/21] target/ppc: Update float_invalid_op_div for new flags
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Now that vxidi, vxzdz, and vxsnan are computed directly by
softfloat, we don't need to recompute it via classes.
Upstream-Status: Backport
[https://git.qemu.org/?p=qemu.git;a=commit;h=c07f82416cb7973c64d1e21c09957182b4b033dc]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211119160502.17432-11-richard.henderson@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Xiangyu Chen <xiangyu.chen@windriver.com>
---
target/ppc/fpu_helper.c | 38 ++++++++++++++------------------------
1 file changed, 14 insertions(+), 24 deletions(-)
diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
index 23264e6528..2ab34236a3 100644
--- a/target/ppc/fpu_helper.c
+++ b/target/ppc/fpu_helper.c
@@ -509,17 +509,14 @@ float64 helper_fmul(CPUPPCState *env, float64 arg1, float64 arg2)
return ret;
}
-static void float_invalid_op_div(CPUPPCState *env, bool set_fprc,
- uintptr_t retaddr, int classes)
+static void float_invalid_op_div(CPUPPCState *env, int flags,
+ bool set_fprc, uintptr_t retaddr)
{
- classes &= ~is_neg;
- if (classes == is_inf) {
- /* Division of infinity by infinity */
+ if (flags & float_flag_invalid_idi) {
float_invalid_op_vxidi(env, set_fprc, retaddr);
- } else if (classes == is_zero) {
- /* Division of zero by zero */
+ } else if (flags & float_flag_invalid_zdz) {
float_invalid_op_vxzdz(env, set_fprc, retaddr);
- } else if (classes & is_snan) {
+ } else if (flags & float_flag_invalid_snan) {
float_invalid_op_vxsnan(env, retaddr);
}
}
@@ -528,17 +525,13 @@ static void float_invalid_op_div(CPUPPCState *env, bool set_fprc,
float64 helper_fdiv(CPUPPCState *env, float64 arg1, float64 arg2)
{
float64 ret = float64_div(arg1, arg2, &env->fp_status);
- int status = get_float_exception_flags(&env->fp_status);
+ int flags = get_float_exception_flags(&env->fp_status);
- if (unlikely(status)) {
- if (status & float_flag_invalid) {
- float_invalid_op_div(env, 1, GETPC(),
- float64_classify(arg1) |
- float64_classify(arg2));
- }
- if (status & float_flag_divbyzero) {
- float_zero_divide_excp(env, GETPC());
- }
+ if (unlikely(flags & float_flag_invalid)) {
+ float_invalid_op_div(env, flags, 1, GETPC());
+ }
+ if (unlikely(flags & float_flag_divbyzero)) {
+ float_zero_divide_excp(env, GETPC());
}
return ret;
@@ -1755,9 +1748,8 @@ void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
- float_invalid_op_div(env, sfprf, GETPC(), \
- tp##_classify(xa->fld) | \
- tp##_classify(xb->fld)); \
+ float_invalid_op_div(env, tstat.float_exception_flags, \
+ sfprf, GETPC()); \
} \
if (unlikely(tstat.float_exception_flags & float_flag_divbyzero)) { \
float_zero_divide_excp(env, GETPC()); \
@@ -1798,9 +1790,7 @@ void helper_xsdivqp(CPUPPCState *env, uint32_t opcode,
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
- float_invalid_op_div(env, 1, GETPC(),
- float128_classify(xa->f128) |
- float128_classify(xb->f128));
+ float_invalid_op_div(env, tstat.float_exception_flags, 1, GETPC());
}
if (unlikely(tstat.float_exception_flags & float_flag_divbyzero)) {
float_zero_divide_excp(env, GETPC());
--
2.17.1
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