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linux-user/sparc: Use WREG_SP constant in sparc/signal.c

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s/UREG_FP/WREG_SP/g

This is non-obvious because the UREG_FP constant is fact wrong.
However, the previous search-and-replace patch made it clear that
UREG_FP expands to WREG_O6, and we can see from the enumeration in
target/sparc/cpu.h that WREG_O6 is in fact WREG_SP, the stack pointer.

The UREG_SP define is unused; remove it.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2019-11-06 12:33:12 +01:00 committed by Laurent Vivier
parent 80180eb2ca
commit 8d9c72a2e2
1 changed files with 2 additions and 5 deletions
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7
linux-user/sparc/signal.c
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@ -104,9 +104,6 @@ struct target_rt_signal_frame {
qemu_siginfo_fpu_t fpu_state;
};
#define UREG_FP WREG_O6
#define UREG_SP WREG_I6
static inline abi_ulong get_sigframe(struct target_sigaction *sa,
CPUSPARCState *env,
unsigned long framesize)
@ -201,7 +198,7 @@ void setup_frame(int sig, struct target_sigaction *ka,
goto sigsegv;
/* 3. signal handler back-trampoline and parameters */
env->regwptr[UREG_FP] = sf_addr;
env->regwptr[WREG_SP] = sf_addr;
env->regwptr[WREG_O0] = sig;
env->regwptr[WREG_O1] = sf_addr +
offsetof(struct target_signal_frame, info);
@ -255,7 +252,7 @@ long do_sigreturn(CPUSPARCState *env)
sigset_t host_set;
int i;
sf_addr = env->regwptr[UREG_FP];
sf_addr = env->regwptr[WREG_SP];
trace_user_do_sigreturn(env, sf_addr);
if (!lock_user_struct(VERIFY_READ, sf, sf_addr, 1)) {
goto segv_and_exit;