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aarch64: Move x8 out of call_context

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Reduces stack size.  It was only used by the closure, and there
are available argument registers.
This commit is contained in:
Richard Henderson
2014-11-12 09:29:32 +01:00
committed by Richard Henderson
parent a992f8789b
commit 0e41c73b09
3 changed files with 4 additions and 5 deletions
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src/aarch64/ffi.c
+2 -3
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@@ -52,7 +52,6 @@ struct call_context
{
struct _v v[N_V_ARG_REG];
UINT64 x[N_X_ARG_REG];
UINT64 x8;
};
#if defined (__clang__) && defined (__APPLE__)
@@ -766,7 +765,7 @@ ffi_closure_SYSV_inner (ffi_cif *cif,
void (*fun)(ffi_cif*,void*,void**,void*),
void *user_data,
struct call_context *context,
void *stack, void *rvalue)
void *stack, void *rvalue, void *struct_rvalue)
{
void **avalue = (void**) alloca (cif->nargs * sizeof (void*));
int i, h, nargs, flags;
@@ -861,7 +860,7 @@ ffi_closure_SYSV_inner (ffi_cif *cif,
flags = cif->flags;
if (flags & AARCH64_RET_IN_MEM)
rvalue = (void *)(uintptr_t)context->x8;
rvalue = struct_rvalue;
fun (cif, rvalue, avalue, user_data);