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[PATCH v5 18/26] linux-user/ppc: Simplify encode_trampoline
From: |
Richard Henderson |
Subject: |
[PATCH v5 18/26] linux-user/ppc: Simplify encode_trampoline |
Date: |
Wed, 29 Sep 2021 09:05:45 -0400 |
The sigret parameter is never 0, and even if it was the encoding
of the LI instruction would still work.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
linux-user/ppc/signal.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/linux-user/ppc/signal.c b/linux-user/ppc/signal.c
index e4d0dfa3bf..77f37b9f01 100644
--- a/linux-user/ppc/signal.c
+++ b/linux-user/ppc/signal.c
@@ -309,10 +309,8 @@ static void save_user_regs(CPUPPCState *env, struct
target_mcontext *frame)
static void encode_trampoline(int sigret, uint32_t *tramp)
{
/* Set up the sigreturn trampoline: li r0,sigret; sc. */
- if (sigret) {
- __put_user(0x38000000 | sigret, &tramp[0]);
- __put_user(0x44000002, &tramp[1]);
- }
+ __put_user(0x38000000 | sigret, &tramp[0]);
+ __put_user(0x44000002, &tramp[1]);
}
static void restore_user_regs(CPUPPCState *env,
--
2.25.1
- [PATCH v5 05/26] linux-user/arm: Implement setup_sigtramp, (continued)
- [PATCH v5 05/26] linux-user/arm: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 07/26] linux-user/cris: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 08/26] linux-user/hexagon: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 09/26] linux-user/hppa: Document non-use of setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 10/26] linux-user/i386: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 11/26] linux-user/x86_64: Raise SIGSEGV if SA_RESTORER not set, Richard Henderson, 2021/09/29
- [PATCH v5 13/26] linux-user/microblaze: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 14/26] linux-user/mips: Tidy install_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 12/26] linux-user/m68k: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 15/26] linux-user/mips: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 18/26] linux-user/ppc: Simplify encode_trampoline,
Richard Henderson <=
- [PATCH v5 16/26] linux-user/nios2: Document non-use of setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 17/26] linux-user/openrisc: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 19/26] linux-user/ppc: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 20/26] linux-user/riscv: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 22/26] linux-user/sh4: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 23/26] linux-user/sparc: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 21/26] linux-user/s390x: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 24/26] linux-user/xtensa: Implement setup_sigtramp, Richard Henderson, 2021/09/29
- [PATCH v5 25/26] linux-user: Remove default for TARGET_ARCH_HAS_SIGTRAMP_PAGE, Richard Henderson, 2021/09/29
- [PATCH v5 26/26] tests/tcg/multiarch: Re-enable signals test for most guests, Richard Henderson, 2021/09/29