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Switch to mmap w/ executable memory.

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This commit is contained in:
Brad Nelson
2021-01-03 00:39:25 -08:00
parent 0ccb9ea026
commit cb6566caf1
2 changed files with 7 additions and 5 deletions
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4
ueforth/common/core.h
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@ -96,8 +96,8 @@ static cell_t *eval1(cell_t *sp, cell_t *call) {
return sp; return sp;
} }
static void ueforth(const char *src, cell_t src_len) { static void ueforth(void *heap, const char *src, cell_t src_len) {
g_sys.heap = malloc(HEAP_SIZE); g_sys.heap = (cell_t *) heap;
register cell_t *sp = g_sys.heap; g_sys.heap += STACK_SIZE; register cell_t *sp = g_sys.heap; g_sys.heap += STACK_SIZE;
register cell_t *rp = g_sys.heap; g_sys.heap += STACK_SIZE; register cell_t *rp = g_sys.heap; g_sys.heap += STACK_SIZE;
register cell_t tos = 0, *ip, t, w; register cell_t tos = 0, *ip, t, w;

8
ueforth/posix/posix_main.c
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@ -1,9 +1,8 @@
#include <dlfcn.h> #include <dlfcn.h>
#include <stdio.h> #include <sys/mman.h>
#include "common/opcodes.h" #include "common/opcodes.h"
#define HEAP_SIZE (10 * 1024 * 1024)
#define STACK_SIZE (16 * 1024) #define STACK_SIZE (16 * 1024)
#define PLATFORM_OPCODE_LIST \ #define PLATFORM_OPCODE_LIST \
@ -23,6 +22,9 @@
#include "gen/posix_boot.h" #include "gen/posix_boot.h"
#define HEAP_SIZE (10 * 1024 * 1024)
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
ueforth(boot, sizeof(boot)); void *heap = mmap(0, HEAP_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
ueforth(heap, boot, sizeof(boot));
} }