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| author | Jacques Comeaux <jacquesrcomeaux@protonmail.com> | 2024-01-26 17:58:33 -0600 |
|---|---|---|
| committer | Jacques Comeaux <jacquesrcomeaux@protonmail.com> | 2024-01-26 17:58:33 -0600 |
| commit | a63eba62ae9faffea51ba618b0d20f132c23c452 (patch) | |
| tree | ea38b5ad2da14cbe2fc47f6e4bd3313eee6cd326 /assembler/string.s | |
| parent | 0d04cd2eba12abdc9b8fca0532261bab879b45ed (diff) | |
Improve assembler sketch
Diffstat (limited to 'assembler/string.s')
| -rw-r--r-- | assembler/string.s | 16 |
1 files changed, 16 insertions, 0 deletions
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 |