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https://github.com/espressif/esp-idf.git
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f527010044
...and all their callers. With the upcoming switch from sizeof(time_t)==4 to sizeof(time_t)==8, sizeof(struct stat) is also increasing. A few newlib functions present in ROM allocate 'struct stat' on the stack and call _fstat_r on this structure. The implementation of fstat is provided in ESP-IDF. This implementation will often do memset(st, 0, sizeof(*st)), where st is 'struct stat*', before setting some fields of this structure. If IDF is built with sizeof(st) different from sizeof(st) which ROM was built with, this will lead to an out-of-bounds write and a stack corruption. This commit removes problematic ROM functions from the linker script. Here are the functions which allocate 'struct stat': * _isatty_r (in ROM) * __swhatbuf_r, called by __smakebuf_r, called by __swsetup_r and __srefill_r (in ROM) * _fseeko_r (not in ROM) * glob2 (not in ROM) * _gettemp (not in ROM) As a result, these functions are used from libc.a, and use correct size of 'stat' structure. Closes https://github.com/espressif/esp-idf/issues/7980
111 lines
2.8 KiB
Plaintext
111 lines
2.8 KiB
Plaintext
/**
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* These are the newlib functions present in ESP32-S2 ROM.
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* See also esp32s2.rom.newlib-data.ld for the list of .data/.bss symbols used by these functions.
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* Unlike other ROM functions which are exported using PROVIDE, which declare weak symbols,
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* newlib related functions are exported using assignment, which declares strong symbols.
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* This is done so that ROM functions are always used instead of the ones provided by libc.a.
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*/
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abs = 0x40000618;
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__ascii_mbtowc = 0x40007a04;
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__ascii_wctomb = 0x400018d0;
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PROVIDE ( __assert = 0x4001a430 );
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PROVIDE ( __assert_func = 0x4001a408 );
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bzero = 0x400078c8;
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_cleanup_r = 0x4001a480;
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creat = 0x4000788c;
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div = 0x40000620;
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fclose = 0x4001a804;
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_fclose_r = 0x4001a714;
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fflush = 0x40001bb8;
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_fflush_r = 0x40001b30;
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__fp_unlock_all = 0x4001a64c;
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__fputwc = 0x40001770;
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fputwc = 0x40001864;
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_fputwc_r = 0x400017f8;
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_fwalk = 0x4001bcec;
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_fwalk_reent = 0x4001bd24;
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isalnum = 0x400078d8;
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isalpha = 0x400078e8;
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isascii = 0x4001aaec;
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isblank = 0x400078f8;
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iscntrl = 0x40007918;
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isdigit = 0x40007930;
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isgraph = 0x40007968;
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islower = 0x40007948;
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isprint = 0x40007980;
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ispunct = 0x40007994;
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isspace = 0x400079ac;
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isupper = 0x400079c4;
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labs = 0x40000648;
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ldiv = 0x40000650;
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__locale_ctype_ptr = 0x40001c2c;
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__locale_ctype_ptr_l = 0x40001c24;
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__locale_mb_cur_max = 0x40001c0c;
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longjmp = 0x400005a4;
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_mbtowc_r = 0x400079e0;
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memccpy = 0x4001ab00;
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memchr = 0x4001ab24;
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memcmp = 0x4001ab40;
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memcpy = 0x4001aba8;
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memmove = 0x4001acb0;
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memrchr = 0x4001acec;
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memset = 0x4001ad3c;
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open = 0x400080c4;
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qsort = 0x400006f4;
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rand_r = 0x40007af4;
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__sclose = 0x4001a700;
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__seofread = 0x4001a690;
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setjmp = 0x40000540;
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setlocale = 0x40001c44;
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_setlocale_r = 0x40001bdc;
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__sflush_r = 0x400019dc;
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__sfmoreglue = 0x4001a4c8;
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__sfp = 0x4001a590;
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__sfp_lock_acquire = 0x4001a508;
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__sfp_lock_release = 0x4001a514;
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__sinit = 0x4001a538;
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__sinit_lock_acquire = 0x4001a520;
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__sinit_lock_release = 0x4001a52c;
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srand = 0x40007a24;
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__sread = 0x4001a660;
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__sseek = 0x4001a6cc;
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strcasecmp = 0x40007b38;
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strcasestr = 0x40007b7c;
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strcat = 0x4001ad90;
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strchr = 0x4001adb0;
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strcmp = 0x40007be4;
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strcoll = 0x40007ce8;
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strcpy = 0x40007cfc;
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strcspn = 0x4001adcc;
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strdup = 0x40007d84;
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_strdup_r = 0x40007d98;
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strlcat = 0x40007db8;
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strlcpy = 0x4001adf8;
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strlen = 0x40007e08;
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strlwr = 0x40007e68;
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strncasecmp = 0x40007e94;
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strncat = 0x4001ae34;
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strncmp = 0x4001ae64;
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strncpy = 0x40007f20;
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strndup = 0x40007fe8;
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_strndup_r = 0x40007ffc;
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strnlen = 0x4001ae9c;
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strrchr = 0x40008040;
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strsep = 0x4000806c;
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strspn = 0x4001aebc;
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strstr = 0x4001aee8;
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__strtok_r = 0x4001af18;
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strtok_r = 0x4001af7c;
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strupr = 0x40008084;
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__swbuf = 0x4000167c;
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__swbuf_r = 0x400015bc;
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__swrite = 0x4001a698;
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toascii = 0x4001af90;
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tolower = 0x40008158;
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toupper = 0x40008174;
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wcrtomb = 0x400012f4;
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_wcrtomb_r = 0x400012a0;
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_wctomb_r = 0x400018ac;
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