Add syscall fallbacks to ChibiOS builds (#11573)

* Add fallback syscalls to ChibiOS builds that are present but able to be overridden as appropriate.

* Modified location to be ChibiOS-specific.
This commit is contained in:
Nick Brassel 2021-01-18 04:45:21 +11:00 committed by GitHub
parent da40242dbc
commit e524e0a397
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2 changed files with 93 additions and 1 deletions

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@ -204,7 +204,8 @@ CHIBISRC = $(STARTUPSRC) \
$(PLATFORMSRC) \ $(PLATFORMSRC) \
$(BOARDSRC) \ $(BOARDSRC) \
$(STREAMSSRC) \ $(STREAMSSRC) \
$(CHIBIOS)/os/various/syscalls.c $(CHIBIOS)/os/various/syscalls.c \
$(PLATFORM_COMMON_DIR)/syscall-fallbacks.c
# Ensure the ASM files are not subjected to LTO -- it'll strip out interrupt handlers otherwise. # Ensure the ASM files are not subjected to LTO -- it'll strip out interrupt handlers otherwise.
QUANTUM_LIB_SRC += $(STARTUPASM) $(PORTASM) $(OSALASM) $(PLATFORMASM) QUANTUM_LIB_SRC += $(STARTUPASM) $(PORTASM) $(OSALASM) $(PLATFORMASM)

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@ -0,0 +1,91 @@
/* Copyright 2021 Nick Brassel, QMK
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <sys/stat.h>
#include <sys/types.h>
#pragma GCC diagnostic ignored "-Wmissing-prototypes"
__attribute__((weak, used)) int _read_r(struct _reent *r, int file, char *ptr, int len) {
(void)r;
(void)file;
(void)ptr;
(void)len;
return -1;
}
__attribute__((weak, used)) int _lseek_r(struct _reent *r, int file, int ptr, int dir) {
(void)r;
(void)file;
(void)ptr;
(void)dir;
return 0;
}
__attribute__((weak, used)) int _write_r(struct _reent *r, int file, char *ptr, int len) {
(void)r;
(void)file;
(void)ptr;
return len;
}
__attribute__((weak, used)) int _close_r(struct _reent *r, int file) {
(void)r;
(void)file;
return 0;
}
__attribute__((weak, used)) caddr_t _sbrk_r(struct _reent *r, int incr) {
(void)r;
(void)incr;
return (caddr_t)-1;
}
__attribute__((weak, used)) int _fstat_r(struct _reent *r, int file, struct stat *st) {
(void)r;
(void)file;
(void)st;
return 0;
}
__attribute__((weak, used)) int _isatty_r(struct _reent *r, int fd) {
(void)r;
(void)fd;
return 1;
}
__attribute__((weak, used)) void _fini(void) { return; }
__attribute__((weak, used)) pid_t _getpid(void) { return 1; }
__attribute__((weak, noreturn)) void _exit(int i) {
(void)i;
while (1)
;
}
__attribute__((weak)) void _kill(void) {}
__attribute__((weak)) void *__dso_handle;
void __cxa_pure_virtual(void);
__attribute__((weak)) void __cxa_pure_virtual() {
while (1)
;
}
#pragma GCC diagnostic pop