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ppc/translate: Raise exceptions after setting the cc 

The PowerISA reference states that the comparison operators update the
FPCC, CR and FPSCR and, if VE=1, jump to the exception handler.

Moving the exception-triggering code after the CC update sequence solves
the problem.

Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201112230130.65262-5-thatlemon@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Giuseppe Musacchio 2020-11-13 00:01:30 +01:00 committed by David Gibson
parent bc92c260f6
commit 91699dbf30
1 changed files with 14 additions and 14 deletions
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28
target/ppc/fpu_helper.c
View File

@ -2501,13 +2501,6 @@ static inline void do_scalar_cmp(CPUPPCState *env, ppc_vsr_t *xa, ppc_vsr_t *xb,
}
}
if (vxsnan_flag) {
float_invalid_op_vxsnan(env, GETPC());
}
if (vxvc_flag) {
float_invalid_op_vxvc(env, 0, GETPC());
}
break;
default:
g_assert_not_reached();
@ -2517,6 +2510,13 @@ static inline void do_scalar_cmp(CPUPPCState *env, ppc_vsr_t *xa, ppc_vsr_t *xb,
env->fpscr |= cc << FPSCR_FPCC;
env->crf[crf_idx] = cc;
if (vxsnan_flag) {
float_invalid_op_vxsnan(env, GETPC());
}
if (vxvc_flag) {
float_invalid_op_vxvc(env, 0, GETPC());
}
do_float_check_status(env, GETPC());
}
@ -2566,13 +2566,6 @@ static inline void do_scalar_cmpq(CPUPPCState *env, ppc_vsr_t *xa,
}
}
if (vxsnan_flag) {
float_invalid_op_vxsnan(env, GETPC());
}
if (vxvc_flag) {
float_invalid_op_vxvc(env, 0, GETPC());
}
break;
default:
g_assert_not_reached();
@ -2582,6 +2575,13 @@ static inline void do_scalar_cmpq(CPUPPCState *env, ppc_vsr_t *xa,
env->fpscr |= cc << FPSCR_FPCC;
env->crf[crf_idx] = cc;
if (vxsnan_flag) {
float_invalid_op_vxsnan(env, GETPC());
}
if (vxvc_flag) {
float_invalid_op_vxvc(env, 0, GETPC());
}
do_float_check_status(env, GETPC());
}