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linux-user: Fix XER access in ppc version of elf_core_copy_regs 

env->xer doesn't hold some bits of XER, like OV and CA. To write the
complete register in the core dump we should read XER value with
cpu_read_xer.

Reported-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Fixes: da91a00f19 ("target-ppc: Split out SO, OV, CA fields from XER")
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20211014223234.127012-4-matheus.ferst@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Matheus Ferst 2021-10-14 19:32:33 -03:00 committed by David Gibson
parent 7974dc5900
commit 10de052188
3 changed files with 3 additions and 3 deletions
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2
linux-user/elfload.c
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@ -901,7 +901,7 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUPPCState *en
(*regs)[33] = tswapreg(env->msr);
(*regs)[35] = tswapreg(env->ctr);
(*regs)[36] = tswapreg(env->lr);
(*regs)[37] = tswapreg(env->xer);
(*regs)[37] = tswapreg(cpu_read_xer(env));
for (i = 0; i < ARRAY_SIZE(env->crf); i++) {
ccr |= env->crf[i] << (32 - ((i + 1) * 4));

2
target/ppc/cpu.c
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@ -27,7 +27,7 @@
#include "helper_regs.h"
#include "sysemu/tcg.h"
target_ulong cpu_read_xer(CPUPPCState *env)
target_ulong cpu_read_xer(const CPUPPCState *env)
{
if (is_isa300(env)) {
return env->xer | (env->so << XER_SO) |

2
target/ppc/cpu.h
View File

@ -2412,7 +2412,7 @@ enum {
/*****************************************************************************/
#define is_isa300(ctx) (!!(ctx->insns_flags2 & PPC2_ISA300))
target_ulong cpu_read_xer(CPUPPCState *env);
target_ulong cpu_read_xer(const CPUPPCState *env);
void cpu_write_xer(CPUPPCState *env, target_ulong xer);
/*