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win32: use VirtualAlloc for run memory

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This commit is contained in:
Mounir IDRASSI 2026-05-13 14:25:22 +09:00
parent 256b4ef63c
commit 6728a64f1b
1 changed files with 15 additions and 0 deletions
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15
tccrun.c
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@ -130,8 +130,15 @@ static int rt_mem(TCCState *s1, int size)
//printf("map %p %p %p\n", ptr, prw, (void*)ptr_diff);
size *= 2;
#else
# ifdef _WIN32
/* Generated code is page-protected below; avoid changing CRT heap pages. */
ptr = VirtualAlloc(NULL, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
# else
ptr = tcc_malloc(size += PAGESIZE); /* one extra page to align malloc memory */
# endif
#endif
if (!ptr)
return tcc_error_noabort("tccrun: could not allocate memory");
s1->run_ptr = ptr;
s1->run_size = size;
return ptr_diff;
@ -188,12 +195,20 @@ ST_FUNC void tcc_run_free(TCCState *s1)
#ifdef CONFIG_SELINUX
munmap(ptr, size);
#else
# ifdef _WIN32
(void)size;
# ifdef _WIN64
win64_del_function_table(s1->run_function_table);
# endif
VirtualFree(ptr, 0, MEM_RELEASE);
# else
/* unprotect memory to make it usable for malloc again */
protect_pages((void*)PAGEALIGN(ptr), size - PAGESIZE, 2 /*rw*/);
# ifdef _WIN64
win64_del_function_table(s1->run_function_table);
# endif
tcc_free(ptr);
# endif
#endif
}