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target/arm: Report correct syndrome for FP/SIMD traps to Hyp mode

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For traps of FP/SIMD instructions to AArch32 Hyp mode, the syndrome
provided in HSR has more information than is reported to AArch64.
Specifically, there are extra fields TA and coproc which indicate
whether the trapped instruction was FP or SIMD. Add this extra
information to the syndromes we construct, and mask it out when
taking the exception to AArch64.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181012144235.19646-11-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell
2018-10-24 07:50:18 +01:00
parent 2ed08180db
commit 4be42f4013
3 changed files with 26 additions and 5 deletions
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8
target/arm/translate.c
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@@ -4948,7 +4948,7 @@ static int disas_neon_ls_insn(DisasContext *s, uint32_t insn)
*/
if (s->fp_excp_el) {
gen_exception_insn(s, 4, EXCP_UDEF,
syn_fp_access_trap(1, 0xe, false), s->fp_excp_el);
syn_simd_access_trap(1, 0xe, false), s->fp_excp_el);
return 0;
}
@@ -5727,7 +5727,7 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
*/
if (s->fp_excp_el) {
gen_exception_insn(s, 4, EXCP_UDEF,
syn_fp_access_trap(1, 0xe, false), s->fp_excp_el);
syn_simd_access_trap(1, 0xe, false), s->fp_excp_el);
return 0;
}
@@ -7838,7 +7838,7 @@ static int disas_neon_insn_3same_ext(DisasContext *s, uint32_t insn)
if (s->fp_excp_el) {
gen_exception_insn(s, 4, EXCP_UDEF,
syn_fp_access_trap(1, 0xe, false), s->fp_excp_el);
syn_simd_access_trap(1, 0xe, false), s->fp_excp_el);
return 0;
}
if (!s->vfp_enabled) {
@@ -7924,7 +7924,7 @@ static int disas_neon_insn_2reg_scalar_ext(DisasContext *s, uint32_t insn)
if (s->fp_excp_el) {
gen_exception_insn(s, 4, EXCP_UDEF,
syn_fp_access_trap(1, 0xe, false), s->fp_excp_el);
syn_simd_access_trap(1, 0xe, false), s->fp_excp_el);
return 0;
}
if (!s->vfp_enabled) {