diff options
Diffstat (limited to 'ldso')
| -rw-r--r-- | ldso/include/dl-string.h | 92 |
1 files changed, 54 insertions, 38 deletions
diff --git a/ldso/include/dl-string.h b/ldso/include/dl-string.h index 9426860cc..6fdee77fc 100644 --- a/ldso/include/dl-string.h +++ b/ldso/include/dl-string.h @@ -46,10 +46,10 @@ static inline char *_dl_strcat(char *dst, const char *src) static inline char * _dl_strcpy(char * dst,const char *src) { register char *ptr = dst; - + dst--;src--; while ((*++dst = *++src) != 0); - + return ptr; } @@ -219,7 +219,8 @@ static inline char *_dl_get_last_path_component(char *path) * or using long division */ static inline char *_dl_simple_ltoa(char * local, unsigned long i) { - /* 21 digits plus null terminator, good for 64-bit or smaller ints */ + /* 20 digits plus a null terminator should be good for + * 64-bit or smaller ints (2^64 - 1)*/ char *p = &local[22]; *--p = '\0'; do { @@ -233,7 +234,8 @@ static inline char *_dl_simple_ltoa(char * local, unsigned long i) static inline char *_dl_simple_ltoahex(char * local, unsigned long i) { - /* 21 digits plus null terminator, good for 64-bit or smaller ints */ + /* 16 digits plus a leading "0x" plus a null terminator, + * should be good for 64-bit or smaller ints */ char *p = &local[22]; *--p = '\0'; do { @@ -250,46 +252,60 @@ static inline char *_dl_simple_ltoahex(char * local, unsigned long i) } -#if defined(mc68000) || defined(__arm__) || defined(__mips__) || defined(__sh__) || defined(__powerpc__) -/* 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)); \ - } + + +/* The following macros may be used in dl-startup.c to debug + * ldso before ldso has fixed itself up to make function calls */ + + +/* On some arches constant strings are referenced through the GOT. + * This requires that load_addr must already be defined... */ +#if defined(mc68000) || defined(__arm__) || defined(__mips__) \ + || defined(__sh__) || defined(__powerpc__) +# define CONSTANT_STRING_GOT_FIXUP(X) \ + if ((X) < (const char *) load_addr) (X) += load_addr; #else -#define SEND_STDERR(X) _dl_write(2, X, _dl_strlen(X)); +# define CONSTANT_STRING_GOT_FIXUP(X) #endif -/* Some targets may have to override this to something that doesn't - reference constant strings through the GOT. This macro should be - preferred over SEND_STDERR for constant strings before we complete - bootstrap. */ -#ifndef SEND_EARLY_STDERR -# define SEND_EARLY_STDERR(S) SEND_STDERR(S) -#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_STDERR(X) { \ + const char *tmp1 = (X); \ + CONSTANT_STRING_GOT_FIXUP(tmp1) \ + _dl_write (2, tmp1, _dl_strlen(tmp1)); \ +}; + +#define SEND_ADDRESS_STDERR(X, add_a_newline) { \ + char tmp[26], v, *tmp2, *tmp1 = tmp; \ + CONSTANT_STRING_GOT_FIXUP(tmp1) \ + tmp2 = tmp1 + sizeof(tmp); \ + *--tmp2 = '\0'; \ + if (add_a_newline) *--tmp2 = '\n'; \ + do { \ + v = (X) & 0xf; \ + if (v <= 0x09) \ + *--tmp2 = '0' + v; \ + else \ + *--tmp2 = 'a' - 0x0a + v; \ + (X) >>= 4; \ + } while ((X) > 0); \ + *--tmp2 = 'x'; \ + *--tmp2 = '0'; \ + _dl_write (2, tmp2, tmp1 - tmp2 + sizeof(tmp)); \ }; -#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); \ - } \ +#define SEND_NUMBER_STDERR(X, add_a_newline) { \ + char tmp[26], v, *tmp2, *tmp1 = tmp; \ + CONSTANT_STRING_GOT_FIXUP(tmp1) \ + tmp2 = tmp1 + sizeof(tmp); \ + *--tmp2 = '\0'; \ + if (add_a_newline) *--tmp2 = '\n'; \ + do { \ + do_rem(v, (X), 10); \ + *--tmp2 = '0' + v; \ + (X) /= 10; \ + } while ((X) > 0); \ + _dl_write (2, tmp2, tmp1 - tmp2 + sizeof(tmp)); \ }; |