summaryrefslogtreecommitdiff
path: root/device/lib/stm8-large/_strstr.asm
diff options
context:
space:
mode:
authorXavier ASUS <xavi92psx@gmail.com>2019-10-18 00:31:54 +0200
committerXavier ASUS <xavi92psx@gmail.com>2019-10-18 00:31:54 +0200
commit268a53de823a6750d6256ee1fb1e7707b4b45740 (patch)
tree42c1799a9a82b2f7d9790ee9fe181d72a7274751 /device/lib/stm8-large/_strstr.asm
downloadsdcc-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/_strstr.asm')
-rw-r--r--device/lib/stm8-large/_strstr.asm134
1 files changed, 134 insertions, 0 deletions
diff --git a/device/lib/stm8-large/_strstr.asm b/device/lib/stm8-large/_strstr.asm
new file mode 100644
index 0000000..5b7ac3f
--- /dev/null
+++ b/device/lib/stm8-large/_strstr.asm
@@ -0,0 +1,134 @@
+;--------------------------------------------------------
+; File Created by SDCC : free open source ANSI-C Compiler
+; Version 3.9.3 #11345 (Linux)
+;--------------------------------------------------------
+ .module _strstr
+ .optsdcc -mstm8
+
+;--------------------------------------------------------
+; Public variables in this module
+;--------------------------------------------------------
+ .globl _strstr
+;--------------------------------------------------------
+; 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
+; ../_strstr.c: 31: char *strstr ( const char *str1, const char *str2 )
+; -----------------------------------------
+; function strstr
+; -----------------------------------------
+_strstr:
+ sub sp, #13
+; ../_strstr.c: 33: const char *cp = str1;
+ ldw y, (0x11, sp)
+ ldw (0x01, sp), y
+; ../_strstr.c: 37: if (!*str2)
+ ldw y, (0x13, sp)
+ ldw (0x03, sp), y
+ ldw x, y
+ ld a, (x)
+ ld (0x0d, sp), a
+ jrne 00122$
+; ../_strstr.c: 38: return ((char*)str1);
+ ldw x, (0x01, sp)
+ jra 00113$
+; ../_strstr.c: 40: while (*cp)
+00122$:
+ ldw y, (0x01, sp)
+ ldw (0x08, sp), y
+00110$:
+ ldw x, (0x08, sp)
+ ld a, (x)
+ jreq 00112$
+; ../_strstr.c: 43: s2 = str2;
+ ldw x, (0x03, sp)
+; ../_strstr.c: 45: while (*s1 && *s2 && !(*s1-*s2))
+ ldw y, (0x08, sp)
+ ldw (0x0a, sp), y
+ ldw (0x0c, sp), x
+00105$:
+ ldw x, (0x0a, sp)
+ ld a, (x)
+ ld (0x07, sp), a
+ ldw x, (0x0c, sp)
+ ld a, (x)
+ ld (0x05, sp), a
+ tnz (0x07, sp)
+ jreq 00107$
+ tnz (0x05, sp)
+ jreq 00107$
+ clrw x
+ ld a, (0x07, sp)
+ ld xl, a
+ ld a, (0x05, sp)
+ ld (0x07, sp), a
+ clr (0x06, sp)
+ subw x, (0x06, sp)
+ tnzw x
+ jrne 00107$
+; ../_strstr.c: 46: s1++, s2++;
+ ldw x, (0x0a, sp)
+ incw x
+ ldw (0x0a, sp), x
+ ldw x, (0x0c, sp)
+ incw x
+ ldw (0x0c, sp), x
+ jra 00105$
+00107$:
+; ../_strstr.c: 48: if (!*s2)
+ tnz (0x05, sp)
+ jrne 00109$
+; ../_strstr.c: 49: return ((char*)cp);
+ ldw x, (0x01, sp)
+ jra 00113$
+00109$:
+; ../_strstr.c: 51: cp++;
+ ldw x, (0x08, sp)
+ incw x
+ ldw (0x08, sp), x
+ ldw (0x01, sp), x
+ jra 00110$
+00112$:
+; ../_strstr.c: 54: return (NULL) ;
+ clrw x
+00113$:
+; ../_strstr.c: 55: }
+ addw sp, #13
+ retf
+ .area CODE
+ .area CONST
+ .area INITIALIZER
+ .area CABS (ABS)