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[PATCH 7/8] linux-user/sparc64: Include TARGET_STACK_BIAS in get_sp_from


From: Richard Henderson
Subject: [PATCH 7/8] linux-user/sparc64: Include TARGET_STACK_BIAS in get_sp_from_cpustate
Date: Sun, 25 Apr 2021 08:57:48 -0700

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>
---
 linux-user/sparc/target_cpu.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/linux-user/sparc/target_cpu.h b/linux-user/sparc/target_cpu.h
index 37f6a1d62b..1f4bed50f4 100644
--- a/linux-user/sparc/target_cpu.h
+++ b/linux-user/sparc/target_cpu.h
@@ -46,6 +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;
     }
 
@@ -83,7 +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
-- 
2.25.1




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