andrius
/
tinycc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add support for varargs in RISCV

This commit is contained in:
Ekaitz 2023-10-09 00:58:04 +02:00
parent 5a0ef8d062
commit 72c3d38814
2 changed files with 31 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
include/stdarg.h
View File

@ -67,6 +67,25 @@ typedef struct {
#define va_end(ap)
#define va_copy(dest, src) ((dest) = (src))
#elif __riscv
typedef __builtin_va_list va_list;
typedef char *__builtin_va_list;
#define __va_reg_size (__riscv_xlen >> 3)
#define va_start __builtin_va_start
#define va_arg __builtin_va_arg
#define va_copy __builtin_va_copy
#define va_end __builtin_va_end
typedef char *__builtin_va_list;
#define _tcc_align(addr,type) (((unsigned long)addr + __alignof__(type) - 1) \
& -(__alignof__(type)))
#define __builtin_va_arg(ap,type) (*(sizeof(type) > (2*__va_reg_size) ? *(type **)((ap += __va_reg_size) - __va_reg_size) : (ap = (va_list)(_tcc_align(ap,type) + (sizeof(type)+__va_reg_size - 1)& -__va_reg_size), (type *)(ap - ((sizeof(type)+ __va_reg_size - 1)& -__va_reg_size)))))
#define __builtin_va_end(ap) (void)(ap)
#ifndef __builtin_va_copy
# define __builtin_va_copy(dest, src) (dest) = (src)
#endif
#else /* __i386__ */
typedef char *va_list;
/* only correct for i386 */

12
tccgen.c
View File

@ -4690,6 +4690,18 @@ ST_FUNC void unary(void)
}
}
break;
#ifdef TCC_TARGET_RISCV64
case TOK_builtin_va_start:
parse_builtin_params(0, "ee");
r = vtop->r & VT_VALMASK;
if (r == VT_LLOCAL)
r = VT_LOCAL;
if (r != VT_LOCAL)
tcc_error("__builtin_va_start expects a local variable");
gen_va_start();
vstore();
break;
#endif
#ifdef TCC_TARGET_X86_64
#ifdef TCC_TARGET_PE
case TOK_builtin_va_start: