From a63eba62ae9faffea51ba618b0d20f132c23c452 Mon Sep 17 00:00:00 2001 From: Jacques Comeaux Date: Fri, 26 Jan 2024 17:58:33 -0600 Subject: Improve assembler sketch --- assembler/string.s | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 assembler/string.s (limited to 'assembler/string.s') diff --git a/assembler/string.s b/assembler/string.s new file mode 100644 index 0000000..0ed7ca3 --- /dev/null +++ b/assembler/string.s @@ -0,0 +1,16 @@ +// R0 : string1 address +// R1 : string2 address +// Result in R0 +string_compare: + MOVS R4, 0 +loop: + LDRB R2, [R0, R4] + LDRB R3, [R1, R4] + CMP R2, R3 + BNE done + CMP R2, 0 + BEQ done + ADDS R4, 1 + B loop +done: + BX LR -- cgit v1.2.3