Mercurial > repos > blastem
changeset 759:c47e1750c264
Use MAP_32BIT on Linux since my hint seems to be ignored
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Sun, 28 Jun 2015 10:21:51 -0700 |
| parents | b52cd6854c28 |
| children | 656b1fded67f |
| files | mem.c |
| diffstat | 1 files changed, 5 insertions(+), 1 deletions(-) [+] |
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--- a/mem.c Sun Jun 28 10:12:37 2015 -0700 +++ b/mem.c Sun Jun 28 10:21:51 2015 -0700 @@ -14,13 +14,17 @@ #define MAP_ANONYMOUS MAP_ANON #endif +#ifndef MAP_32BIT +#define MAP_32BIT 0 +#endif + void * alloc_code(size_t *size) { //start at the 1GB mark to allow plenty of room for sbrk based malloc implementations //while still keeping well within 32-bit displacement range for calling code compiled into the executable static uint8_t *next = (uint8_t *)0x40000000; *size += PAGE_SIZE - (*size & (PAGE_SIZE - 1)); - uint8_t *ret = mmap(NULL, *size, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + uint8_t *ret = mmap(NULL, *size, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_32BIT, -1, 0); next = ret + *size; return ret; }