cdrom: Fix PBP support on big-endian platforms

[pcsx_rearmed.git] / libpcsxcore / lightrec / mem.c

diff --git a/libpcsxcore/lightrec/mem.c b/libpcsxcore/lightrec/mem.c
index c7fa7da..ff67e3d 100644 (file)
--- a/libpcsxcore/lightrec/mem.c
+++ b/libpcsxcore/lightrec/mem.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2022 Paul Cercueil <paul@crapouillou.net>
  */
 
+#define _GNU_SOURCE
 #include <errno.h>
 #include <fcntl.h>
 #include <stdbool.h>
@@ -11,6 +12,7 @@
 #include <sys/mman.h>
 #include <sys/shm.h>
 #include <sys/stat.h>
+#include <sys/syscall.h>
 #include <unistd.h>
 
 #include "../psxhw.h"
@@ -29,6 +31,8 @@
 #define MFD_HUGETLB 0x0004
 #endif
 
+void *code_buffer;
+
 static const uintptr_t supported_io_bases[] = {
        0x0,
        0x10000000,
@@ -68,7 +72,8 @@ static int lightrec_mmap_ram(bool hugetlb)
        if (hugetlb)
                flags |= MFD_HUGETLB;
 
-       memfd = memfd_create("/lightrec_memfd", flags);
+        memfd = syscall(SYS_memfd_create, "/lightrec_memfd",
+                       flags);
        if (memfd < 0) {
                err = -errno;
                fprintf(stderr, "Failed to create memfd: %d\n", err);
@@ -124,9 +129,7 @@ int lightrec_init_mmap(void)
        unsigned int i;
        uintptr_t base;
        void *map;
-       int err;
-
-       err = lightrec_mmap_ram(true);
+       int err = lightrec_mmap_ram(true);
        if (err) {
                err = lightrec_mmap_ram(false);
                if (err) {
@@ -170,8 +173,22 @@ int lightrec_init_mmap(void)
 
        psxH = (s8 *)map;
 
+       map = mmap_huge((void *)(base + 0x800000), CODE_BUFFER_SIZE,
+                       PROT_EXEC | PROT_READ | PROT_WRITE,
+                       MAP_PRIVATE | MAP_FIXED_NOREPLACE | MAP_ANONYMOUS,
+                       0, 0);
+       if (map == MAP_FAILED) {
+               err = -EINVAL;
+               fprintf(stderr, "Unable to mmap code buffer\n");
+               goto err_unmap_scratch;
+       }
+
+       code_buffer = map;
+
        return 0;
 
+err_unmap_scratch:
+       munmap(psxH, 0x10000);
 err_unmap_bios:
        munmap(psxR, 0x80000);
 err_unmap_parallel:
@@ -186,6 +203,7 @@ void lightrec_free_mmap(void)
 {
        unsigned int i;
 
+       munmap(code_buffer, CODE_BUFFER_SIZE);
        munmap(psxH, 0x10000);
        munmap(psxR, 0x80000);
        munmap(psxP, 0x10000);