From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: qemu-s390x@nongnu.org, david@redhat.com
Subject: [PATCH v4 12/18] target/s390x: Simplify helper_lra
Date: Fri, 27 Sep 2019 12:39:19 -0700 [thread overview]
Message-ID: <20190927193925.23567-13-richard.henderson@linaro.org> (raw)
In-Reply-To: <20190927193925.23567-1-richard.henderson@linaro.org>
We currently call trigger_pgm_exception to set cs->exception_index
and env->int_pgm_code and then read the values back and then
reset cs->exception_index so that the exception is not delivered.
Instead, use the exception type that we already have directly
without ever triggering an exception that must be suppressed.
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/s390x/mem_helper.c | 17 +++--------------
1 file changed, 3 insertions(+), 14 deletions(-)
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index e15aa296dd..4254548935 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -2361,34 +2361,23 @@ void HELPER(sturg)(CPUS390XState *env, uint64_t addr, uint64_t v1)
/* load real address */
uint64_t HELPER(lra)(CPUS390XState *env, uint64_t addr)
{
- CPUState *cs = env_cpu(env);
- uint32_t cc = 0;
uint64_t asc = env->psw.mask & PSW_MASK_ASC;
uint64_t ret, tec;
- int old_exc, flags, exc;
+ int flags, exc, cc;
/* XXX incomplete - has more corner cases */
if (!(env->psw.mask & PSW_MASK_64) && (addr >> 32)) {
tcg_s390_program_interrupt(env, PGM_SPECIAL_OP, GETPC());
}
- old_exc = cs->exception_index;
exc = mmu_translate(env, addr, 0, asc, &ret, &flags, &tec);
if (exc) {
- /*
- * We don't care about ILEN or TEC, as we're not going to
- * deliver the exception -- thus resetting exception_index below.
- * TODO: clean this up.
- */
- trigger_pgm_exception(env, exc, ILEN_UNWIND);
cc = 3;
- }
- if (cs->exception_index == EXCP_PGM) {
- ret = env->int_pgm_code | 0x80000000;
+ ret = exc | 0x80000000;
} else {
+ cc = 0;
ret |= addr & ~TARGET_PAGE_MASK;
}
- cs->exception_index = old_exc;
env->cc_op = cc;
return ret;
--
2.17.1
next prev parent reply other threads:[~2019-09-27 19:58 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-27 19:39 [PATCH v4 00/18] target/s390: Use tcg unwinding for ilen Richard Henderson
2019-09-27 19:39 ` [PATCH v4 01/18] target/s390x: Add ilen to unwind data Richard Henderson
2019-09-30 15:43 ` David Hildenbrand
2019-09-27 19:39 ` [PATCH v4 02/18] target/s390x: Remove ilen parameter from tcg_s390_program_interrupt Richard Henderson
2019-10-01 15:24 ` David Hildenbrand
2019-09-27 19:39 ` [PATCH v4 03/18] target/s390x: Remove ilen parameter from s390_program_interrupt Richard Henderson
2019-09-27 19:39 ` [PATCH v4 04/18] target/s390x: Use tcg_s390_program_interrupt in TCG helpers Richard Henderson
2019-09-27 19:39 ` [PATCH v4 05/18] target/s390x: Push trigger_pgm_exception lower in s390_cpu_tlb_fill Richard Henderson
2019-09-27 19:39 ` [PATCH v4 06/18] target/s390x: Handle tec " Richard Henderson
2019-09-27 19:39 ` [PATCH v4 07/18] target/s390x: Return exception from mmu_translate_real Richard Henderson
2019-09-27 19:39 ` [PATCH v4 08/18] target/s390x: Remove exc argument to mmu_translate_asce Richard Henderson
2019-09-27 19:39 ` [PATCH v4 09/18] target/s390x: Return exception from mmu_translate Richard Henderson
2019-09-30 15:45 ` David Hildenbrand
2019-10-01 15:30 ` David Hildenbrand
2019-10-01 16:21 ` Richard Henderson
2019-09-27 19:39 ` [PATCH v4 10/18] target/s390x: Return exception from translate_pages Richard Henderson
2019-09-27 19:39 ` [PATCH v4 11/18] target/s390x: Remove fail variable from s390_cpu_tlb_fill Richard Henderson
2019-09-27 19:39 ` Richard Henderson [this message]
2019-09-27 19:39 ` [PATCH v4 13/18] target/s390x: Rely on unwinding in s390_cpu_tlb_fill Richard Henderson
2019-09-27 19:39 ` [PATCH v4 14/18] target/s390x: Rely on unwinding in s390_cpu_virt_mem_rw Richard Henderson
2019-09-27 19:39 ` [PATCH v4 15/18] target/s390x: Remove ILEN_AUTO Richard Henderson
2019-09-27 19:39 ` [PATCH v4 16/18] target/s390x: Remove ilen argument from trigger_access_exception Richard Henderson
2019-09-27 19:39 ` [PATCH v4 17/18] target/s390x: Remove ilen argument from trigger_pgm_exception Richard Henderson
2019-09-27 19:39 ` [PATCH v4 18/18] target/s390x: Remove ILEN_UNWIND Richard Henderson
2019-09-30 15:45 ` David Hildenbrand
2019-10-01 8:07 ` [PATCH v4 00/18] target/s390: Use tcg unwinding for ilen David Hildenbrand
2019-10-01 15:02 ` Richard Henderson
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