diff options
Diffstat (limited to 'libgloss/riscv/crt0.S')
| -rw-r--r-- | libgloss/riscv/crt0.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libgloss/riscv/crt0.S b/libgloss/riscv/crt0.S index 54443e4..aa5ac36 100644 --- a/libgloss/riscv/crt0.S +++ b/libgloss/riscv/crt0.S @@ -27,8 +27,13 @@ _start: .option pop /* Initialize jvt CSR (reg addr: 0x0017) */ +#ifndef __riscv_cmodel_large .weak __jvt_base$ lla a0, __jvt_base$ +#else + la a0, .Laddr_jvt_base + ld a0, 0(a0) +#endif beqz a0, .Ljvt_init_end .option push .option norelax @@ -38,21 +43,38 @@ _start: .Ljvt_init_end: # Clear the bss segment +#ifndef __riscv_cmodel_large la a0, __bss_start la a2, _end +#else + la a0, .Laddr_bss_start + ld a0, 0(a0) + la a2, .Laddr_end + ld a2, 0(a2) +#endif sub a2, a2, a0 li a1, 0 call memset #ifdef _LITE_EXIT # Make reference to atexit weak to avoid unconditionally pulling in # support code. Refer to comments in __atexit.c for more details. +#ifndef __riscv_cmodel_large .weak atexit la a0, atexit +#else + la a0, .Laddr_atexit + ld a0, 0(a0) +#endif beqz a0, .Lweak_atexit .weak __libc_fini_array #endif +#ifndef __riscv_cmodel_large la a0, __libc_fini_array # Register global termination functions +#else + la a0, .Laddr_libc_fini_array + ld a0, 0(a0) +#endif call atexit # to be called upon exit #ifdef _LITE_EXIT .Lweak_atexit: @@ -66,4 +88,21 @@ _start: add a2, a2, a1 # a2 = envp call main tail exit +#ifdef __riscv_cmodel_large +.Laddr_gp: + .dword __global_pointer$ +.Laddr_jvt_base: + .weak __jvt_base$ + .dword __jvt_base$ +.Laddr_bss_start: + .dword __bss_start +.Laddr_end: + .dword _end +.Laddr_atexit: + .weak atexit + .dword atexit +.Laddr_libc_fini_array: + .weak __libc_fini_array + .dword __libc_fini_array +#endif .size _start, .-_start |