@@ -176,39 +176,35 @@ static int access_prepare_nf(S390Access *access, CPUS390XState *env,
MMUAccessType access_type,
int mmu_idx, uintptr_t ra)
{
- void *haddr1, *haddr2 = NULL;
int size1, size2, exc;
- vaddr vaddr2 = 0;
assert(size > 0 && size <= 4096);
size1 = MIN(size, -(vaddr1 | TARGET_PAGE_MASK)),
size2 = size - size1;
+ memset(access, 0, sizeof(*access));
+ access->vaddr1 = vaddr1;
+ access->size1 = size1;
+ access->size2 = size2;
+ access->mmu_idx = mmu_idx;
+
exc = s390_probe_access(env, vaddr1, size1, access_type, mmu_idx, nonfault,
- &haddr1, ra);
- if (exc) {
+ &access->haddr1, ra);
+ if (unlikely(exc)) {
return exc;
}
if (unlikely(size2)) {
/* The access crosses page boundaries. */
- vaddr2 = wrap_address(env, vaddr1 + size1);
+ vaddr vaddr2 = wrap_address(env, vaddr1 + size1);
+
+ access->vaddr2 = vaddr2;
exc = s390_probe_access(env, vaddr2, size2, access_type, mmu_idx,
- nonfault, &haddr2, ra);
- if (exc) {
+ nonfault, &access->haddr2, ra);
+ if (unlikely(exc)) {
return exc;
}
}
-
- *access = (S390Access) {
- .vaddr1 = vaddr1,
- .vaddr2 = vaddr2,
- .haddr1 = haddr1,
- .haddr2 = haddr2,
- .size1 = size1,
- .size2 = size2,
- .mmu_idx = mmu_idx
- };
return 0;
}
Assign to access struct immediately, rather than waiting until the end of the function. This means we can pass address of haddr struct members instead of allocating extra space on the local stack. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/s390x/tcg/mem_helper.c | 30 +++++++++++++----------------- 1 file changed, 13 insertions(+), 17 deletions(-)