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| author | Richard Henderson <richard.henderson@linaro.org> | 2021-04-25 19:53:14 -0700 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2021-05-15 21:43:23 +0200 |
| commit | eb215f40c2b4cbb12e97197db5fb06bd73b8324e (patch) | |
| tree | fbe68424363ae0879e74ec71a6ae782239065aad | |
| parent | ddc3e74d9c5ac76562ce8abe9e5908c4ff7cb8f0 (diff) | |
| download | qemu-eb215f40c2b4cbb12e97197db5fb06bd73b8324e.zip qemu-eb215f40c2b4cbb12e97197db5fb06bd73b8324e.tar.gz qemu-eb215f40c2b4cbb12e97197db5fb06bd73b8324e.tar.bz2 | |
linux-user/sparc: Include TARGET_STACK_BIAS in get_sp_from_cpustate
Move TARGET_STACK_BIAS from signal.c. Generic code cares about the
logical stack pointer, not the physical one that has a bias applied
for sparc64.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
| -rw-r--r-- | linux-user/sparc/signal.c | 2 | ||||
| -rw-r--r-- | linux-user/sparc/target_cpu.h | 9 |
2 files changed, 8 insertions, 3 deletions
diff --git a/linux-user/sparc/signal.c b/linux-user/sparc/signal.c index d27b7a3..7657909 100644 --- a/linux-user/sparc/signal.c +++ b/linux-user/sparc/signal.c @@ -394,8 +394,6 @@ struct target_reg_window { abi_ulong ins[8]; }; -#define TARGET_STACK_BIAS 2047 - /* {set, get}context() needed for 64-bit SparcLinux userland. */ void sparc64_set_context(CPUSPARCState *env) { diff --git a/linux-user/sparc/target_cpu.h b/linux-user/sparc/target_cpu.h index 1fa1011..1f4bed5 100644 --- a/linux-user/sparc/target_cpu.h +++ b/linux-user/sparc/target_cpu.h @@ -20,6 +20,12 @@ #ifndef SPARC_TARGET_CPU_H #define SPARC_TARGET_CPU_H +#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) +# define TARGET_STACK_BIAS 2047 +#else +# define TARGET_STACK_BIAS 0 +#endif + static inline void cpu_clone_regs_child(CPUSPARCState *env, target_ulong newsp, unsigned flags) { @@ -40,6 +46,7 @@ static inline void cpu_clone_regs_child(CPUSPARCState *env, target_ulong newsp, #endif /* ??? The kernel appears to copy one stack frame to the new stack. */ /* ??? The kernel force aligns the new stack. */ + /* Userspace provides a biased stack pointer value. */ env->regwptr[WREG_SP] = newsp; } @@ -77,7 +84,7 @@ static inline void cpu_set_tls(CPUSPARCState *env, target_ulong newtls) static inline abi_ulong get_sp_from_cpustate(CPUSPARCState *state) { - return state->regwptr[WREG_SP]; + return state->regwptr[WREG_SP] + TARGET_STACK_BIAS; } #endif |