From f345f5d118a45778f46b478f438eb47fc31d6705 Mon Sep 17 00:00:00 2001 From: Michael Pavone Date: Sun, 28 Jun 2015 10:21:51 -0700 Subject: Use MAP_32BIT on Linux since my hint seems to be ignored --- mem.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'mem.c') diff --git a/mem.c b/mem.c index cb3a047..048f751 100644 --- a/mem.c +++ b/mem.c @@ -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; } -- cgit v1.2.3