diff options
| -rw-r--r-- | tools/include/nolibc/arch-riscv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/include/nolibc/arch-riscv.h b/tools/include/nolibc/arch-riscv.h index c2b5db383d96..1608e6bd94b9 100644 --- a/tools/include/nolibc/arch-riscv.h +++ b/tools/include/nolibc/arch-riscv.h @@ -170,6 +170,8 @@ struct sys_stat_struct { _arg1; \ }) +char **environ __attribute__((weak)); + /* startup code */ void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void) { @@ -183,6 +185,8 @@ void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void) "slli a2, a0, "PTRLOG"\n" // envp (a2) = SZREG*argc ... "add a2, a2, "SZREG"\n" // + SZREG (skip null) "add a2,a2,a1\n" // + argv + "lui a3, %hi(environ)\n" // a3 = &environ (high bits) + "sd a2,%lo(environ)(a3)\n" // store envp(a2) into environ "andi sp,a1,-16\n" // sp must be 16-byte aligned "call main\n" // main() returns the status code, we'll exit with it. "li a7, 93\n" // NR_exit == 93 |