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c9b8a13a88
qemu/target/ppc
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Ilya Leoshkevich c9b8a13a88 target/ppc: Set ctx->opcode for decode_insn32() 
divdu (without a dot) sometimes updates cr0, even though it shouldn't.
The reason is that gen_op_arith_divd() checks Rc(ctx->opcode), which is
not initialized. This field is initialized only for instructions that
go through decode_legacy(), and not decodetree.

There already was a similar issue fixed in commit 86e6202a57
("target/ppc: Make divw[u] handler method decodetree compatible.").

It's not immediately clear what else may access the uninitialized
ctx->opcode, so instead of playing whack-a-mole and changing the check
to compute_rc0, simply initialize ctx->opcode.

Cc: qemu-stable@nongnu.org
Fixes: 99082815f1 ("target/ppc: Add infrastructure for prefixed insns")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
2024-11-04 09:07:29 +10:00
..
translate target/ppc: Fix lxvx/stxvx facility check 2024-09-22 06:55:21 +02:00
arch_dump.c target/ppc/arch_dump: set prstatus pid to cpuid 2024-07-26 09:21:06 +10:00
compat.c spapr: Fix machine reset deadlock from replay-record 2023-09-06 11:19:33 +02:00
cpu_init.c ppc/pnv: Add an LPAR per core machine option 2024-07-26 09:21:06 +10:00
cpu-models.c ppc: Drop support for POWER9 and POWER10 DD1 chips 2024-03-13 02:47:04 +10:00
cpu-models.h ppc: spelling fixes 2023-09-20 07:54:34 +03:00
cpu-param.h license: Update deprecated SPDX tag LGPL-2.0+ to LGPL-2.0-or-later 2024-09-20 10:11:59 +03:00
cpu-qom.h target/ppc: Use GDBFeature for dynamic XML 2024-02-28 09:09:25 +00:00
cpu.c target/ppc: Flush inputs to zero with NJ in ppc_store_vscr 2023-09-06 11:19:33 +02:00
cpu.h ppc: Add has_smt_siblings property to CPUPPCState 2024-07-26 09:21:06 +10:00
dfp_helper.c target/ppc: replace assert(0) with g_assert_not_reached() 2024-09-24 13:53:35 +02:00
excp_helper.c target/ppc: Add helpers to check for SMT sibling threads 2024-07-26 09:21:06 +10:00
fpu_helper.c target/ppc: Move VSX fp compare insns to decodetree. 2024-07-26 09:51:33 +10:00
gdbstub.c target/ppc: Fix GDB register indexing on secondary CPUs 2024-03-30 18:50:24 +10:00
helper_regs.c target/ppc: Remove id_tlbs flag from CPU env 2024-05-24 09:43:11 +10:00
helper_regs.h target/ppc: Fix PMU hflags calculation 2023-06-10 10:19:24 -03:00
helper.h target/ppc: Move VSX fp compare insns to decodetree. 2024-07-26 09:51:33 +10:00
insn32.decode target/ppc: Move VSX fp compare insns to decodetree. 2024-07-26 09:51:33 +10:00
insn64.decode target/ppc: Implemented [pm]xvbf16ger2* 2022-05-26 17:11:33 -03:00
int_helper.c target/ppc: Move VMX integer add/sub saturate insns to decodetree. 2024-07-26 09:51:33 +10:00
internal.h target/ppc: Add a function to check for page protection bit 2024-05-24 09:43:13 +10:00
Kconfig ppc: switch boards to "default y" 2024-05-03 15:47:47 +02:00
kvm_ppc.h target/ppc: Prohibit target specific KVM prototypes on user emulation 2023-11-07 12:13:28 +01:00
kvm.c kvm: Allow kvm_arch_get/put_registers to accept Error** 2024-10-03 22:04:19 +02:00
machine.c target/ppc: Fix migration of CPUs with TLB_EMB TLB type 2024-09-03 16:24:37 -03:00
mem_helper.c target/ppc: Move VSX vector with length storage access insns to decodetree. 2024-07-26 09:51:33 +10:00
meson.build target/ppc: Move out BookE and related MMU functions from mmu_common.c 2024-05-24 09:43:13 +10:00
misc_helper.c ppc/pnv: Implement Power9 CPU core thread state indirect register 2024-07-26 09:21:06 +10:00
mmu_common.c target/ppc/mmu_common.c: Remove mmu_ctx_t 2024-07-26 09:51:34 +10:00
mmu_helper.c target/ppc: replace assert(0) with g_assert_not_reached() 2024-09-24 13:53:35 +02:00
mmu-book3s-v3.c target/ppc/mmu-radix64: Remove externally unused parts from header 2024-07-26 09:51:34 +10:00
mmu-book3s-v3.h target/ppc: Remove includes from mmu-book3s-v3.h 2024-07-26 09:51:34 +10:00
mmu-booke.c target/ppc: Move out BookE and related MMU functions from mmu_common.c 2024-05-24 09:43:13 +10:00
mmu-booke.h target/ppc: Move out BookE and related MMU functions from mmu_common.c 2024-05-24 09:43:13 +10:00
mmu-books.h
mmu-hash32.c target/ppc/mmu-hash32.c: Move get_pteg_offset32() to the header 2024-07-26 09:51:34 +10:00
mmu-hash32.h target/ppc/mmu-hash32.c: Move get_pteg_offset32() to the header 2024-07-26 09:51:34 +10:00
mmu-hash64.c target/ppc: Remove includes from mmu-book3s-v3.h 2024-07-26 09:51:34 +10:00
mmu-hash64.h target/ppc: Unexport some functions from mmu-book3s-v3.h 2024-07-26 09:51:34 +10:00
mmu-radix64.c target/ppc: Remove includes from mmu-book3s-v3.h 2024-07-26 09:51:34 +10:00
mmu-radix64.h target/ppc/mmu-radix64: Remove externally unused parts from header 2024-07-26 09:51:34 +10:00
power8-pmu-regs.c.inc target/ppc: Add new hflags to support BHRB 2024-05-24 08:57:50 +10:00
power8-pmu.c target/ppc: Add recording of taken branches to BHRB 2024-05-24 09:33:06 +10:00
power8-pmu.h target/ppc: Add recording of taken branches to BHRB 2024-05-24 09:33:06 +10:00
ppc-qmp-cmds.c target/ppc: Prefer fast cpu_env() over slower CPU QOM cast macro 2024-03-12 12:04:24 +01:00
spr_common.h target/ppc: Implement SPRC/SPRD SPRs 2024-05-24 09:34:40 +10:00
tcg-stub.c hw/ppc/spapr_hcall: Allow elision of softmmu_resize_hpt_prep 2024-02-23 23:24:42 +10:00
timebase_helper.c ppc/pnv: Add POWER10 ChipTOD quirk for big-core 2024-07-26 09:21:06 +10:00
trace-events target/ppc: Improve KVM hypercall trace 2022-04-20 18:00:30 -03:00
trace.h
translate.c target/ppc: Set ctx->opcode for decode_insn32() 2024-11-04 09:07:29 +10:00
user_only_helper.c target/ppc: Prefer fast cpu_env() over slower CPU QOM cast macro 2024-03-12 12:04:24 +01:00