FreeCalypso > hg > freecalypso-tools
view target-utils/libc/memcmp.S @ 698:9ecbf1bf2e1b
fc-iram: added '+' to getopt magic string like in fc-xram
Both fc-iram and fc-xram now support secondary program invokation.
If the user needs to pass some options to the secondary program,
we don't want fc-iram or fc-xram to claim these options as its own,
thus we need to stop getopt() from reordering arguments. This fix
was already implemented in fc-xram a long time ago, but the issue
was overlooked when secondary program invokation ability was added
to fc-iram.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 31 Mar 2020 03:23:26 +0000 |
parents | a675cec34076 |
children |
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.text .code 32 .globl bcmp .globl memcmp bcmp: memcmp: cmp r2, #0 beq zero_len_out mov r3, r0 1: ldrb r0, [r3], #1 ldrb r12, [r1], #1 subs r0, r0, r12 bxne lr subs r2, r2, #1 bne 1b bx lr zero_len_out: mov r0, #0 bx lr