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Demand paging on Windows

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This commit is contained in:
mio
2023-01-28 22:04:43 +01:00
parent 7e4754ad00
commit 12a79192ee
5 changed files with 49 additions and 0 deletions
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18
qemu/accel/tcg/translate-all.c
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@@ -869,6 +869,7 @@ static inline void *alloc_code_gen_buffer(struct uc_struct *uc)
return buf;
}
#elif defined(_WIN32)
#ifdef USE_STATIC_CODE_GEN_BUFFER
static inline void *alloc_code_gen_buffer(struct uc_struct *uc)
{
TCGContext *tcg_ctx = uc->tcg_ctx;
@@ -876,6 +877,23 @@ static inline void *alloc_code_gen_buffer(struct uc_struct *uc)
return VirtualAlloc(NULL, size, MEM_RESERVE | MEM_COMMIT,
PAGE_EXECUTE_READWRITE);
}
#else
static inline void *alloc_code_gen_buffer(struct uc_struct *uc)
{
TCGContext *tcg_ctx = uc->tcg_ctx;
size_t size = tcg_ctx->code_gen_buffer_size;
void* ptr = VirtualAlloc(NULL, size, MEM_RESERVE,
PAGE_EXECUTE_READWRITE);
// for prolog init
VirtualAlloc(ptr,
uc->qemu_real_host_page_size * UC_TCG_REGION_PAGES_COUNT,
MEM_COMMIT,
PAGE_EXECUTE_READWRITE);
return ptr;
}
#endif
void free_code_gen_buffer(struct uc_struct *uc)
{
TCGContext *tcg_ctx = uc->tcg_ctx;