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softmmu: add helper function to pass through retaddr

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This patch introduces several helpers to pass return address
which points to the TB. Correct return address allows correct
restoring of the guest PC and icount. These functions should be used when
helpers embedded into TB invoke memory operations.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150710095650.13280.32255.stgit@PASHA-ISP>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Pavel Dovgalyuk 2015-07-10 12:56:50 +03:00 • committed by Richard Henderson
parent 97ed5ccdee
commit 282dffc8a4
4 changed files with 99 additions and 14 deletions
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25
include/exec/cpu_ldst_useronly_template.h
View file

@ -56,12 +56,28 @@ glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
return glue(glue(ld, USUFFIX), _p)(g2h(ptr));
}
static inline RES_TYPE
glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
target_ulong ptr,
uintptr_t retaddr)
{
return glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(env, ptr);
}
#if DATA_SIZE <= 2
static inline int
glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
{
return glue(glue(lds, SUFFIX), _p)(g2h(ptr));
}
static inline int
glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
target_ulong ptr,
uintptr_t retaddr)
{
return glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(env, ptr);
}
#endif
#ifndef CODE_ACCESS
@ -71,6 +87,15 @@ glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,
{
glue(glue(st, SUFFIX), _p)(g2h(ptr), v);
}
static inline void
glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
target_ulong ptr,
RES_TYPE v,
uintptr_t retaddr)
{
glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(env, ptr, v);
}
#endif
#undef RES_TYPE