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[realtek-ambz] Update stdlib compatibility

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Kuba Szczodrzyński
2023-03-17 18:17:35 +01:00
parent 2e30d34021
commit 250e67ab1f
11 changed files with 205 additions and 7730 deletions
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15
docs/dev/stdlib.md
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@@ -2,9 +2,9 @@
Usually, functions available in C standard library should not be defined by the SDK. Instead, they should be included using GCC's headers, and implemented by the libc or wrapped and implemented in the SDK.
The following functions must not be defined by the SDK. Their presence makes conflicts due to incompatibility with C library, so they should be removed or disabled, and replaced with wrappers.
The following functions should not be defined by the SDK. Their presence creates conflicts due to incompatibility with C library, so they should be removed or disabled, and replaced with wrappers.
Memory management functions should be wrapped and redirected to FreeRTOS (if possible). The necessary linker flags are added for all families (in `base.py`), and a FreeRTOS implementation of the wrappers are provided in `malloc.c` in the common core.
Memory management functions must be wrapped and redirected to FreeRTOS. The necessary linker flags are already added for all families (in `base.py`), and a FreeRTOS implementation of the wrappers are provided in `malloc.c` in the common core. If the family doesn't use FreeRTOS, a separate implementation must be added.
Additionally, if the `printf` library is used in the chip family code, all other vendor-defined printf-like functions should be replaced with it.
@@ -28,6 +28,8 @@ long double strtold(const char *str, char **str_end);
long long strtoll(const char *str, char **str_end, int base);
unsigned long strtoul(const char *str, char **str_end, int base);
unsigned long long strtoull(const char *str, char **str_end, int base);
// stdlib.h / Random numbers
int rand();
// string.h / Character classification
int isalnum(int ch);
@@ -81,6 +83,12 @@ int vprintf(const char *format, va_list vlist);
int vsprintf(char *buffer, const char *format, va_list vlist);
int vsnprintf(char *buffer, size_t bufsz, const char *format, va_list vlist);
// POSIX/BSD (from www.die.net)
size_t strlcat(char *dst, const char *src, size_t size);
size_t strlcpy(char *dst, const char *src, size_t size);
size_t strnlen(const char *s, size_t maxlen);
char *strsep(char **stringp, const char *delim);
// Non-stdlib
_calloc_r
_free_r
@@ -89,10 +97,7 @@ _realloc_r
atoui
atoul
atoull
strlcpy
strnicmp
strnlen
strsep
zalloc
// Additional forbidden macros