diff options
| author | Xavier ASUS <xavi92psx@gmail.com> | 2019-10-18 00:31:54 +0200 |
|---|---|---|
| committer | Xavier ASUS <xavi92psx@gmail.com> | 2019-10-18 00:31:54 +0200 |
| commit | 268a53de823a6750d6256ee1fb1e7707b4b45740 (patch) | |
| tree | 42c1799a9a82b2f7d9790ee9fe181d72a7274751 /device/lib/stm8-large/_memcmp.asm | |
| download | sdcc-gas-268a53de823a6750d6256ee1fb1e7707b4b45740.tar.gz | |
sdcc-3.9.0 fork implementing GNU assembler syntax
This fork aims to provide better support for stm8-binutils
Diffstat (limited to 'device/lib/stm8-large/_memcmp.asm')
| -rw-r--r-- | device/lib/stm8-large/_memcmp.asm | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/device/lib/stm8-large/_memcmp.asm b/device/lib/stm8-large/_memcmp.asm new file mode 100644 index 0000000..a8f78b6 --- /dev/null +++ b/device/lib/stm8-large/_memcmp.asm @@ -0,0 +1,101 @@ +;-------------------------------------------------------- +; File Created by SDCC : free open source ANSI-C Compiler +; Version 3.9.3 #11345 (Linux) +;-------------------------------------------------------- + .module _memcmp + .optsdcc -mstm8 + +;-------------------------------------------------------- +; Public variables in this module +;-------------------------------------------------------- + .globl _memcmp +;-------------------------------------------------------- +; ram data +;-------------------------------------------------------- + .area DATA +;-------------------------------------------------------- +; ram data +;-------------------------------------------------------- + .area INITIALIZED +;-------------------------------------------------------- +; absolute external ram data +;-------------------------------------------------------- + .area DABS (ABS) + +; default segment ordering for linker + .area HOME + .area GSINIT + .area GSFINAL + .area CONST + .area INITIALIZER + .area CODE + +;-------------------------------------------------------- +; global & static initialisations +;-------------------------------------------------------- + .area HOME + .area GSINIT + .area GSFINAL + .area GSINIT +;-------------------------------------------------------- +; Home +;-------------------------------------------------------- + .area HOME + .area HOME +;-------------------------------------------------------- +; code +;-------------------------------------------------------- + .area CODE +; ../_memcmp.c: 31: int memcmp (const void * buf1, const void * buf2, size_t count) +; ----------------------------------------- +; function memcmp +; ----------------------------------------- +_memcmp: + sub sp, #5 +; ../_memcmp.c: 33: if (!count) +; ../_memcmp.c: 34: return(0); + ldw x, (0x0d, sp) +; ../_memcmp.c: 36: while ( --count && *((char *)buf1) == *((char *)buf2) ) { + jreq 00107$ + ldw y, (0x0d, sp) + ldw (0x04, sp), y +00104$: + ldw x, (0x04, sp) + decw x + ldw (0x04, sp), x + ldw x, (0x09, sp) + ldw y, (0x0b, sp) + ldw (0x01, sp), y + ld a, (x) + ld (0x03, sp), a + ldw y, (0x01, sp) + ld a, (y) + ldw y, (0x04, sp) + jreq 00106$ + cp a, (0x03, sp) + jrne 00106$ +; ../_memcmp.c: 37: buf1 = (char *)buf1 + 1; + incw x + ldw (0x09, sp), x +; ../_memcmp.c: 38: buf2 = (char *)buf2 + 1; + ldw x, (0x01, sp) + incw x + ldw (0x0b, sp), x + jra 00104$ +00106$: +; ../_memcmp.c: 41: return( *((unsigned char *)buf1) - *((unsigned char *)buf2) ); + clrw x + exg a, xl + ld a, (0x03, sp) + exg a, xl + ld (0x05, sp), a + clr (0x04, sp) + subw x, (0x04, sp) +00107$: +; ../_memcmp.c: 42: } + addw sp, #5 + retf + .area CODE + .area CONST + .area INITIALIZER + .area CABS (ABS) |