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authorRichard Henderson <richard.henderson@linaro.org>2022-04-28 01:10:55 -0700
committerRichard Henderson <richard.henderson@linaro.org>2022-06-28 04:35:07 +0530
commited3a06b10a6abb53589d794ed23accf21be05633 (patch)
tree78e7bb0e6c8432afd1e985f3e8a156402f2821df /linux-user/arm/cpu_loop.c
parent4cfeff4ac16bf5e3e1df44d5561b83e3bd3aab6c (diff)
downloadfocaccia-qemu-ed3a06b10a6abb53589d794ed23accf21be05633.tar.gz
focaccia-qemu-ed3a06b10a6abb53589d794ed23accf21be05633.zip
semihosting: Return void from do_common_semihosting
Perform the cleanup in the FIXME comment in common_semi_gdb_syscall.
Do not modify guest registers until the syscall is complete,
which in the gdbstub case is asynchronous.

In the synchronous non-gdbstub case, use common_semi_set_ret
to set the result.  Merge set_swi_errno into common_semi_cb.
Rely on the latter for combined return value / errno setting.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'linux-user/arm/cpu_loop.c')
-rw-r--r--linux-user/arm/cpu_loop.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/linux-user/arm/cpu_loop.c b/linux-user/arm/cpu_loop.c
index d950409d5b..c0790f3246 100644
--- a/linux-user/arm/cpu_loop.c
+++ b/linux-user/arm/cpu_loop.c
@@ -449,7 +449,7 @@ void cpu_loop(CPUARMState *env)
             }
             break;
         case EXCP_SEMIHOST:
-            env->regs[0] = do_common_semihosting(cs);
+            do_common_semihosting(cs);
             env->regs[15] += env->thumb ? 2 : 4;
             break;
         case EXCP_INTERRUPT: