diff options
Diffstat (limited to 'libgloss/m32r/crt0.S')
| -rw-r--r-- | libgloss/m32r/crt0.S | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/libgloss/m32r/crt0.S b/libgloss/m32r/crt0.S deleted file mode 100644 index f60a1a6..0000000 --- a/libgloss/m32r/crt0.S +++ /dev/null @@ -1,51 +0,0 @@ - .text - .balign 4 - .global _start -_start: - - ld24 sp, _stack - ldi fp, #0 - -# Clear the BSS. Do it in two parts for efficiency: longwords first -# for most of it, then the remaining 0 to 3 bytes. - - seth r2, #shigh(__bss_start) - add3 r2, r2, #low(__bss_start); R2 = start of BSS - seth r3, #shigh(_end) - add3 r3, r3, #low(_end) ; R3 = end of BSS + 1 - - sub r3, r2 ; R3 = BSS size in bytes - mv r4, r3 - srli r4, #2 ; R4 = BSS size in longwords (rounded down) - ldi r1, #0 ; clear R1 for longword store - addi r2, #-4 ; account for pre-inc store - beqz r4, .Lendloop1 ; any more to go? -.Lloop1: - st r1, @+r2 ; yep, zero out another longword - addi r4, #-1 ; decrement count - bnez r4, .Lloop1 ; go do some more -.Lendloop1: - and3 r4, r3, #3 ; get no. of remaining BSS bytes to clear - addi r2, #4 ; account for pre-inc store - beqz r4, .Lendloop2 ; any more to go? -.Lloop2: - stb r1, @r2 ; yep, zero out another byte - addi r2, #1 ; bump address - addi r4, #-1 ; decrement count - bnez r4, .Lloop2 ; go do some more -.Lendloop2: - -# Run code in the .init section. -# This will queue the .fini section to be run with atexit. - - bl __init - -# Call main, then exit. - - bl main - bl exit - -# If that fails just loop. - -.Lexit: - bra .Lexit |