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authorEric Andersen <andersen@codepoet.org>2003-08-19 06:05:34 +0000
committerEric Andersen <andersen@codepoet.org>2003-08-19 06:05:34 +0000
commitbca6a155c79147f706242ed7c590a3538e407a40 (patch)
tree17c7d7784edc61f3984fb3255672f3ecfe826d22 /ldso/include/ld_string.h
parentfd47fd4039cadf42620bbfce43c3a0338e23ee26 (diff)
Phase one of my evil plan to clean up ld.so...
Diffstat (limited to 'ldso/include/ld_string.h')
-rw-r--r--ldso/include/ld_string.h281
1 files changed, 281 insertions, 0 deletions
diff --git a/ldso/include/ld_string.h b/ldso/include/ld_string.h
new file mode 100644
index 000000000..647ab1efd
--- /dev/null
+++ b/ldso/include/ld_string.h
@@ -0,0 +1,281 @@
+#ifndef _LINUX_STRING_H_
+#define _LINUX_STRING_H_
+
+extern void *_dl_malloc(int size);
+extern char *_dl_getenv(const char *symbol, char **envp);
+extern void _dl_unsetenv(const char *symbol, char **envp);
+extern char *_dl_strdup(const char *string);
+extern void _dl_dprintf(int, const char *, ...);
+
+
+static size_t _dl_strlen(const char * str);
+static char *_dl_strcat(char *dst, const char *src);
+static char * _dl_strcpy(char * dst,const char *src);
+static int _dl_strcmp(const char * s1,const char * s2);
+static int _dl_strncmp(const char * s1,const char * s2,size_t len);
+static char * _dl_strchr(const char * str,int c);
+static char *_dl_strrchr(const char *str, int c);
+static char *_dl_strstr(const char *s1, const char *s2);
+static void * _dl_memcpy(void * dst, const void * src, size_t len);
+static int _dl_memcmp(const void * s1,const void * s2,size_t len);
+static void *_dl_memset(void * str,int c,size_t len);
+static char *_dl_get_last_path_component(char *path);
+static char *_dl_simple_ltoa(char * local, unsigned long i);
+static char *_dl_simple_ltoahex(char * local, unsigned long i);
+
+#ifndef NULL
+#define NULL ((void *) 0)
+#endif
+
+static inline size_t _dl_strlen(const char * str)
+{
+ register char *ptr = (char *) str;
+
+ while (*ptr)
+ ptr++;
+ return (ptr - str);
+}
+
+static inline char *_dl_strcat(char *dst, const char *src)
+{
+ register char *ptr = dst;
+
+ while (*ptr)
+ ptr++;
+
+ while (*src)
+ *ptr++ = *src++;
+ *ptr = '\0';
+
+ return dst;
+}
+
+static inline char * _dl_strcpy(char * dst,const char *src)
+{
+ register char *ptr = dst;
+
+ while (*src)
+ *dst++ = *src++;
+ *dst = '\0';
+
+ return ptr;
+}
+
+static inline int _dl_strcmp(const char * s1,const char * s2)
+{
+ register unsigned char c1, c2;
+
+ do {
+ c1 = (unsigned char) *s1++;
+ c2 = (unsigned char) *s2++;
+ if (c1 == '\0')
+ return c1 - c2;
+ }
+ while (c1 == c2);
+
+ return c1 - c2;
+}
+
+static inline int _dl_strncmp(const char * s1,const char * s2,size_t len)
+{
+ register unsigned char c1 = '\0';
+ register unsigned char c2 = '\0';
+
+ while (len > 0) {
+ c1 = (unsigned char) *s1++;
+ c2 = (unsigned char) *s2++;
+ if (c1 == '\0' || c1 != c2)
+ return c1 - c2;
+ len--;
+ }
+
+ return c1 - c2;
+}
+
+static inline char * _dl_strchr(const char * str,int c)
+{
+ register char ch;
+
+ do {
+ if ((ch = *str) == c)
+ return (char *) str;
+ str++;
+ }
+ while (ch);
+
+ return 0;
+}
+
+static inline char *_dl_strrchr(const char *str, int c)
+{
+ register char *prev = 0;
+ register char *ptr = (char *) str;
+
+ while (*ptr != '\0') {
+ if (*ptr == c)
+ prev = ptr;
+ ptr++;
+ }
+ if (c == '\0')
+ return(ptr);
+ return(prev);
+}
+
+
+static inline char *_dl_strstr(const char *s1, const char *s2)
+{
+ register const char *s = s1;
+ register const char *p = s2;
+
+ do {
+ if (!*p) {
+ return (char *) s1;;
+ }
+ if (*p == *s) {
+ ++p;
+ ++s;
+ } else {
+ p = s2;
+ if (!*s) {
+ return NULL;
+ }
+ s = ++s1;
+ }
+ } while (1);
+}
+
+static inline void * _dl_memcpy(void * dst, const void * src, size_t len)
+{
+ register char *a = dst;
+ register const char *b = src;
+
+ while (len--)
+ *a++ = *b++;
+
+ return dst;
+}
+
+
+static inline int _dl_memcmp(const void * s1,const void * s2,size_t len)
+{
+ unsigned char *c1 = (unsigned char *)s1;
+ unsigned char *c2 = (unsigned char *)s2;
+
+ while (len--) {
+ if (*c1 != *c2)
+ return *c1 - *c2;
+ c1++;
+ c2++;
+ }
+ return 0;
+}
+
+static inline void * _dl_memset(void * str,int c,size_t len)
+{
+ register char *a = str;
+
+ while (len--)
+ *a++ = c;
+
+ return str;
+}
+
+static inline char *_dl_get_last_path_component(char *path)
+{
+ char *s;
+ register char *ptr = path;
+ register char *prev = 0;
+
+ while (*ptr)
+ ptr++;
+ s = ptr - 1;
+
+ /* strip trailing slashes */
+ while (s != path && *s == '/') {
+ *s-- = '\0';
+ }
+
+ /* find last component */
+ ptr = path;
+ while (*ptr != '\0') {
+ if (*ptr == '/')
+ prev = ptr;
+ ptr++;
+ }
+ s = prev;
+
+ if (s == NULL || s[1] == '\0')
+ return path;
+ else
+ return s+1;
+}
+
+/* Early on, we can't call printf, so use this to print out
+ * numbers using the SEND_STDERR() macro */
+static inline char *_dl_simple_ltoa(char * local, unsigned long i)
+{
+ /* 21 digits plus null terminator, good for 64-bit or smaller ints */
+ char *p = &local[22];
+ *p-- = '\0';
+ do {
+ *p-- = '0' + i % 10;
+ i /= 10;
+ } while (i > 0);
+ return p + 1;
+}
+
+static inline char *_dl_simple_ltoahex(char * local, unsigned long i)
+{
+ /* 21 digits plus null terminator, good for 64-bit or smaller ints */
+ char *p = &local[22];
+ *p-- = '\0';
+ do {
+ char temp = i % 0x10;
+ if (temp <= 0x09)
+ *p-- = '0' + temp;
+ else
+ *p-- = 'a' - 0x0a + temp;
+ i /= 0x10;
+ } while (i > 0);
+ *p-- = 'x';
+ *p-- = '0';
+ return p + 1;
+}
+
+
+#if defined mc68000 || defined __arm__ || defined __mips__ || defined __sh__
+/* On some arches constant strings are referenced through the GOT. */
+/* XXX Requires load_addr to be defined. */
+#define SEND_STDERR(X) \
+ { const char *__s = (X); \
+ if (__s < (const char *) load_addr) __s += load_addr; \
+ _dl_write (2, __s, _dl_strlen (__s)); \
+ }
+#else
+#define SEND_STDERR(X) _dl_write(2, X, _dl_strlen(X));
+#endif
+
+#define SEND_ADDRESS_STDERR(X, add_a_newline) { \
+ char tmp[22], *tmp1; \
+ _dl_memset(tmp, 0, sizeof(tmp)); \
+ tmp1=_dl_simple_ltoahex( tmp, (unsigned long)(X)); \
+ _dl_write(2, tmp1, _dl_strlen(tmp1)); \
+ if (add_a_newline) { \
+ tmp[0]='\n'; \
+ _dl_write(2, tmp, 1); \
+ } \
+};
+
+#define SEND_NUMBER_STDERR(X, add_a_newline) { \
+ char tmp[22], *tmp1; \
+ _dl_memset(tmp, 0, sizeof(tmp)); \
+ tmp1=_dl_simple_ltoa( tmp, (unsigned long)(X)); \
+ _dl_write(2, tmp1, _dl_strlen(tmp1)); \
+ if (add_a_newline) { \
+ tmp[0]='\n'; \
+ _dl_write(2, tmp, 1); \
+ } \
+};
+
+
+#endif