X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=linux%2Fplat.c;h=ec2aa8bd47575231053eb38c1a532d0808a7a0ae;hb=f168d031790053603152fb5af00de92e47764bf6;hp=751d97ac3bb1446770985ac56deddaa8017ab72d;hpb=4ab30ad46130234838c82fe6d8ac4e55721dd46b;p=libpicofe.git

diff --git a/linux/plat.c b/linux/plat.c
index 751d97a..ec2aa8b 100644
--- a/linux/plat.c
+++ b/linux/plat.c
@@ -1,8 +1,22 @@
+/*
+ * (C) Gražvydas "notaz" Ignotas, 2008-2010
+ *
+ * This work is licensed under the terms of any of these licenses
+ * (at your option):
+ *  - GNU GPL, version 2 or later.
+ *  - GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#define _GNU_SOURCE
 #include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
 #include <dirent.h>
 #include <sys/time.h>
 #include <time.h>
 #include <unistd.h>
+#include <sys/mman.h>
 
 #include "../common/plat.h"
 
@@ -17,6 +31,32 @@ int plat_is_dir(const char *path)
 	return 0;
 }
 
+int plat_get_root_dir(char *dst, int len)
+{
+	int j, ret;
+
+	ret = readlink("/proc/self/exe", dst, len - 1);
+	if (ret < 0) {
+		perror("readlink");
+		ret = 0;
+	}
+	dst[ret] = 0;
+
+	for (j = strlen(dst); j > 0; j--)
+		if (dst[j] == '/') {
+			dst[++j] = 0;
+			break;
+		}
+
+	return j;
+}
+
+#ifdef __GP2X__
+/* Wiz has a borked gettimeofday().. */
+#define plat_get_ticks_ms plat_get_ticks_ms_good
+#define plat_get_ticks_us plat_get_ticks_us_good
+#endif
+
 unsigned int plat_get_ticks_ms(void)
 {
 	struct timeval tv;
@@ -25,12 +65,25 @@ unsigned int plat_get_ticks_ms(void)
 	gettimeofday(&tv, NULL);
 
 	ret = (unsigned)tv.tv_sec * 1000;
-	/* approximate division */
+	/* approximate /= 1000 */
 	ret += ((unsigned)tv.tv_usec * 4195) >> 22;
 
 	return ret;
 }
 
+unsigned int plat_get_ticks_us(void)
+{
+	struct timeval tv;
+	unsigned int ret;
+
+	gettimeofday(&tv, NULL);
+
+	ret = (unsigned)tv.tv_sec * 1000000;
+	ret += (unsigned)tv.tv_usec;
+
+	return ret;
+}
+
 void plat_sleep_ms(int ms)
 {
 	usleep(ms * 1000);
@@ -73,3 +126,45 @@ int plat_wait_event(int *fds_hnds, int count, int timeout_ms)
 	return ret;
 }
 
+void *plat_mmap(unsigned long addr, size_t size)
+{
+	void *req, *ret;
+
+	req = (void *)addr;
+	ret = mmap(req, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+	if (ret == MAP_FAILED)
+		return NULL;
+	if (ret != req)
+		printf("warning: mmaped to %p, requested %p\n", ret, req);
+
+	return ret;
+}
+
+void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
+{
+	void *ret;
+
+	ret = mremap(ptr, oldsize, newsize, MREMAP_MAYMOVE);
+	if (ret == MAP_FAILED)
+		return NULL;
+	if (ret != ptr)
+		printf("warning: mremap moved: %p -> %p\n", ptr, ret);
+
+	return ret;
+}
+
+void plat_munmap(void *ptr, size_t size)
+{
+	munmap(ptr, size);
+}
+
+/* lprintf */
+void lprintf(const char *fmt, ...)
+{
+	va_list vl;
+
+	va_start(vl, fmt);
+	vprintf(fmt, vl);
+	va_end(vl);
+}
+