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24c20d188e
...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
131 lines
3.2 KiB
Plaintext
131 lines
3.2 KiB
Plaintext
/* These are the newlib functions present in ESP32 ROM.
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They should not be used when compiling with PSRAM cache workaround enabled.
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See also esp32.rom.newlib-data.ld for the list of .data/.bss symbols
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used by these functions, and esp32.rom.newlib-nano.ld for "nano" versions
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of printf/scanf family of functions.
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Unlike other ROM functions which are exported using PROVIDE, which declares
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weak symbols, newlib related functions are exported using assignment,
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which declares strong symbols. This is done so that ROM functions are always
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used instead of the ones provided by libc.a.
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Time functions were moved to the esp32.rom.newlib-time.ld file.
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*/
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abs = 0x40056340;
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__ascii_wctomb = 0x40058ef0;
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atoi = 0x400566c4;
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_atoi_r = 0x400566d4;
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atol = 0x400566ec;
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_atol_r = 0x400566fc;
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bzero = 0x4000c1f4;
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_cleanup = 0x40001df8;
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_cleanup_r = 0x40001d48;
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creat = 0x40000e8c;
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div = 0x40056348;
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__dummy_lock = 0x4000c728;
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__dummy_lock_try = 0x4000c730;
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__env_lock = 0x40001fd4;
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__env_unlock = 0x40001fe0;
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fclose = 0x400020ac;
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_fclose_r = 0x40001fec;
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fflush = 0x40059394;
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_fflush_r = 0x40059320;
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_findenv_r = 0x40001f44;
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__fp_lock_all = 0x40001f1c;
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__fp_unlock_all = 0x40001f30;
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__fputwc = 0x40058da0;
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fputwc = 0x40058ea8;
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_fputwc_r = 0x40058e4c;
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_fwalk = 0x4000c738;
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_fwalk_reent = 0x4000c770;
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_getenv_r = 0x40001fbc;
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isalnum = 0x40000f04;
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isalpha = 0x40000f18;
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isascii = 0x4000c20c;
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isblank = 0x40000f2c;
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iscntrl = 0x40000f50;
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isdigit = 0x40000f64;
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isgraph = 0x40000f94;
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islower = 0x40000f78;
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isprint = 0x40000fa8;
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ispunct = 0x40000fc0;
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isspace = 0x40000fd4;
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isupper = 0x40000fe8;
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__itoa = 0x40056678;
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itoa = 0x400566b4;
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labs = 0x40056370;
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ldiv = 0x40056378;
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longjmp = 0x400562cc;
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memccpy = 0x4000c220;
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memchr = 0x4000c244;
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memcmp = 0x4000c260;
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memcpy = 0x4000c2c8;
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memmove = 0x4000c3c0;
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memrchr = 0x4000c400;
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memset = 0x4000c44c;
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qsort = 0x40056424;
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rand = 0x40001058;
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rand_r = 0x400010d4;
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__sccl = 0x4000c498;
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__sclose = 0x400011b8;
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__seofread = 0x40001148;
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setjmp = 0x40056268;
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__sflush_r = 0x400591e0;
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__sfmoreglue = 0x40001dc8;
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__sfp = 0x40001e90;
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__sfp_lock_acquire = 0x40001e08;
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__sfp_lock_release = 0x40001e14;
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__sinit = 0x40001e38;
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__sinit_lock_acquire = 0x40001e20;
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__sinit_lock_release = 0x40001e2c;
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srand = 0x40001004;
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__sread = 0x40001118;
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__sseek = 0x40001184;
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strcasecmp = 0x400011cc;
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strcasestr = 0x40001210;
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strcat = 0x4000c518;
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strchr = 0x4000c53c;
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strcmp = 0x40001274;
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strcoll = 0x40001398;
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strcpy = 0x400013ac;
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strcspn = 0x4000c558;
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strdup = 0x4000143c;
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_strdup_r = 0x40001450;
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strlcat = 0x40001470;
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strlcpy = 0x4000c584;
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strlen = 0x400014c0;
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strlwr = 0x40001524;
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strncasecmp = 0x40001550;
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strncat = 0x4000c5c4;
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strncmp = 0x4000c5f4;
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strncpy = 0x400015d4;
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strndup = 0x400016b0;
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_strndup_r = 0x400016c4;
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strnlen = 0x4000c628;
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strrchr = 0x40001708;
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strsep = 0x40001734;
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strspn = 0x4000c648;
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strstr = 0x4000c674;
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__strtok_r = 0x4000c6a8;
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strtok_r = 0x4000c70c;
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strtol = 0x4005681c;
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_strtol_r = 0x40056714;
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strtoul = 0x4005692c;
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_strtoul_r = 0x40056834;
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strupr = 0x4000174c;
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__submore = 0x40058f3c;
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__swbuf = 0x40058cb4;
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__swbuf_r = 0x40058bec;
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__swrite = 0x40001150;
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toascii = 0x4000c720;
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tolower = 0x40001868;
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toupper = 0x40001884;
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ungetc = 0x400590f4;
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_ungetc_r = 0x40058fa0;
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__utoa = 0x400561f0;
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utoa = 0x40056258;
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wcrtomb = 0x40058920;
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_wcrtomb_r = 0x400588d8;
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_wctomb_r = 0x40058f14;
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