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Prepare RISCV

This commit is contained in:
Stephan Hadinger 2021-02-09 20:41:53 +01:00
parent a91beeb0cf
commit e990f9002b
1 changed files with 14 additions and 4 deletions
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18
lib/default/Ext-printf/src/ext_printf.cpp
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@ -31,6 +31,8 @@
* This will allow to modify it in place and call back printf with altered arguments
\*********************************************************************************************/
#if defined(__XTENSA__) // this works only for xtensa, other platforms needs va_list to be adapted
// This code is heavily inspired by the gcc implementation of va_list
// https://github.com/gcc-mirror/gcc/blob/master/gcc/config/xtensa/xtensa.c
@ -124,6 +126,18 @@ void * __va_cur_ptr4(va_list &va) {
// >>> Reading a_ptr=0x3FFFFD70 *a_ptr=6
// >>> Reading a_ptr=0x3FFFFD74 *a_ptr=7
// >>> Reading a_ptr=0x3FFFFD78 *a_ptr=8
#elif defined(__RISC_V__)
// #define __va_argsiz_tas(t) (((sizeof(t) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
#define va_cur_ptr4(va,T) ( (T*) __va_cur_ptr4(va) )
void * __va_cur_ptr4(va_list &va) {
uintptr_t * va_ptr = (uintptr_t*) &va;
void * cur_ptr = (void*) *va_ptr;
*va_ptr += 4;
return cur_ptr;
}
#else // __XTENSA__, __RISCV__
#error "ext_printf is not suppoerted on this platform"
#endif // __XTENSA__, __RISCV__
/*********************************************************************************************\
* Genral function to convert u64 to hex
@ -202,7 +216,6 @@ int32_t ext_vsnprintf_P(char * buf, size_t buf_len, const char * fmt_P, va_list
va_list va_cpy;
va_copy(va_cpy, va);
#if defined(ESP8266) || defined(ESP32) // this works only for xtensa, other platforms needs va_list to be adapted
// iterate on fmt to extract arguments and patch them in place
char * fmt_cpy = copyStr(fmt_P);
if (fmt_cpy == nullptr) { return 0; }
@ -362,9 +375,6 @@ int32_t ext_vsnprintf_P(char * buf, size_t buf_len, const char * fmt_P, va_list
}
}
}
#else // defined(ESP8266) || defined(ESP32)
#error "ext_printf is not suppoerted on this platform"
#endif // defined(ESP8266) || defined(ESP32)
// Serial.printf("> format_final=%s\n", fmt_cpy); Serial.flush();
int32_t ret = vsnprintf_P(buf, buf_len, fmt_cpy, va_cpy);