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authorRichard Henderson <richard.henderson@linaro.org>2022-01-07 13:32:32 -0800
committerLaurent Vivier <laurent@vivier.eu>2022-01-11 18:40:44 +0100
commit0b25c4a1f6345994d103ad08b2f4e1b366131dd9 (patch)
treeb71fb6e332d7b05ab594d650d3f426b18bb83d63 /linux-user/microblaze
parent23ae825ab7af5e0a30c2d051e388e4e6aa618878 (diff)
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linux-user/microblaze: Fix SIGFPE si_codes
Fix a typo for ESR_EC_DIVZERO, which is integral not floating-point. Fix the if ladder for decoding floating-point exceptions. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220107213243.212806-14-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/microblaze')
-rw-r--r--linux-user/microblaze/cpu_loop.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/linux-user/microblaze/cpu_loop.c b/linux-user/microblaze/cpu_loop.c
index 08620d4..1a2556b 100644
--- a/linux-user/microblaze/cpu_loop.c
+++ b/linux-user/microblaze/cpu_loop.c
@@ -77,15 +77,25 @@ void cpu_loop(CPUMBState *env)
env->iflags &= ~(IMM_FLAG | D_FLAG);
switch (env->esr & 31) {
case ESR_EC_DIVZERO:
- si_code = TARGET_FPE_FLTDIV;
+ si_code = TARGET_FPE_INTDIV;
break;
case ESR_EC_FPU:
- si_code = 0;
- if (env->fsr & FSR_IO) {
+ /*
+ * Note that the kernel passes along fsr as si_code
+ * if there's no recognized bit set. Possibly this
+ * implies that si_code is 0, but follow the structure.
+ */
+ si_code = env->fsr;
+ if (si_code & FSR_IO) {
si_code = TARGET_FPE_FLTINV;
- }
- if (env->fsr & FSR_DZ) {
+ } else if (si_code & FSR_OF) {
+ si_code = TARGET_FPE_FLTOVF;
+ } else if (si_code & FSR_UF) {
+ si_code = TARGET_FPE_FLTUND;
+ } else if (si_code & FSR_DZ) {
si_code = TARGET_FPE_FLTDIV;
+ } else if (si_code & FSR_DO) {
+ si_code = TARGET_FPE_FLTRES;
}
break;
default: