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accel/tcg: Simplify page_get/alloc_target_data

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Since the only user, Arm MTE, always requires allocation,
merge the get and alloc functions to always produce a
non-null result.  Also assume that the user has already
checked page validity.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-10-04 15:40:22 -07:00
parent 0fe6108432
commit 8269c01417
3 changed files with 10 additions and 31 deletions
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16
accel/tcg/user-exec.c
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@ -242,19 +242,11 @@ void page_reset_target_data(target_ulong start, target_ulong end)
void *page_get_target_data(target_ulong address)
{
PageDesc *p = page_find(address >> TARGET_PAGE_BITS);
return p ? p->target_data : NULL;
}
void *ret = p->target_data;
void *page_alloc_target_data(target_ulong address)
{
PageDesc *p = page_find(address >> TARGET_PAGE_BITS);
void *ret = NULL;
if (p->flags & PAGE_VALID) {
ret = p->target_data;
if (!ret) {
p->target_data = ret = g_malloc0(TARGET_PAGE_DATA_SIZE);
}
if (!ret) {
ret = g_malloc0(TARGET_PAGE_DATA_SIZE);
p->target_data = ret;
}
return ret;
}