/*-------------------------------------------------------------------------
- setjmp.c - source file for ANSI routines setjmp & longjmp
+ setjmp.c - source file for ANSI routines setjmp & longjmp
Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
under the terms of the GNU Library General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
-
+
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
-
+
You should have received a copy of the GNU Library General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
+
In other words, you are welcome to use, share and improve this program.
You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding!
+ what you give them. Help stamp out software-hoarding!
-------------------------------------------------------------------------*/
#include <8051.h>
+#include <setjmp.h>
+
+#if defined(SDCC_USE_XSTACK)
+
+static void dummy (void) _naked
+{
+ _asm
+;------------------------------------------------------------
+;Allocation info for local variables in function 'setjmp'
+;------------------------------------------------------------
+;buf Allocated to registers dptr b
+;------------------------------------------------------------
+;../../device/lib/_setjmp.c:180:int setjmp (jmp_buf buf)
+; -----------------------------------------
+; function setjmp
+; -----------------------------------------
+ .globl _setjmp
+_setjmp:
+ ar2 = 0x02
+ ar3 = 0x03
+ ar4 = 0x04
+ ar5 = 0x05
+ ar6 = 0x06
+ ar7 = 0x07
+ ar0 = 0x00
+ ar1 = 0x01
+;../../device/lib/_setjmp.c:183:*buf++ = bpx;
+; genPointerSet
+; genGenPointerSet
+ mov a,_bpx
+ lcall __gptrput
+ inc dptr
+;../../device/lib/_setjmp.c:184:*buf++ = spx;
+; genPointerSet
+; genGenPointerSet
+ mov a,_spx
+ lcall __gptrput
+ inc dptr
+;../../device/lib/_setjmp.c:185:*buf++ = bp;
+; genPointerSet
+; genGenPointerSet
+ mov a,_bp
+ lcall __gptrput
+ inc dptr
+;../../device/lib/_setjmp.c:186:*buf++ = SP;
+; genPointerSet
+; genGenPointerSet
+ mov a,sp
+ lcall __gptrput
+ inc dptr
+;../../device/lib/_setjmp.c:187:*buf++ = *((unsigned char data *) SP );
+; genCast
+; genPointerGet
+; genNearPointerGet
+; genPointerSet
+; genGenPointerSet
+ mov r0,sp
+ mov a,@r0
+ lcall __gptrput
+ inc dptr
+;../../device/lib/_setjmp.c:188:*buf = *((unsigned char data *)SP - 1);
+; genCast
+; genMinus
+; genMinusDec
+; peephole 177.g optimized mov sequence
+ dec r0
+; genPointerGet
+; genNearPointerGet
+ mov a,@r0
+; genPointerSet
+; genGenPointerSet
+ lcall __gptrput
+;../../device/lib/_setjmp.c:189:return 0;
+; genRet
+ mov dptr,#0x0000
+ ret
+;------------------------------------------------------------
+;Allocation info for local variables in function 'longjmp'
+;------------------------------------------------------------
+;rv Allocated to stack - offset -2
+;buf Allocated to registers dptr b
+;lsp Allocated to registers r5
+;------------------------------------------------------------
+;../../device/lib/_setjmp.c:192:int longjmp (jmp_buf buf, int rv)
+; -----------------------------------------
+; function longjmp
+; -----------------------------------------
+ .globl _longjmp
+_longjmp:
+; genReceive
+ mov r0,_spx
+ dec r0
+ movx a,@r0
+ mov r2,a
+ dec r0
+ movx a,@r0
+ mov r3,a
+;../../device/lib/_setjmp.c:193:bpx = *buf++;
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+ mov _bpx,a
+ inc dptr
+;../../device/lib/_setjmp.c:194:spx = *buf++;
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+ mov _spx,a
+ inc dptr
+;../../device/lib/_setjmp.c:195:bp = *buf++;
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+ mov _bp,a
+ inc dptr
+;../../device/lib/_setjmp.c:196:lsp = *buf++;
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+ inc dptr
+; genAssign
+ mov r5,a
+;../../device/lib/_setjmp.c:197:*((unsigned char data *) lsp) = *buf++;
+; genCast
+ mov r0,a
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+ inc dptr
+; genPointerSet
+; genNearPointerSet
+ mov @r0,a
+;../../device/lib/_setjmp.c:198:*((unsigned char data *) lsp - 1) = *buf;
+; genMinus
+; genMinusDec
+ dec r0
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+; genPointerSet
+; genNearPointerSet
+ mov @r0,a
+;../../device/lib/_setjmp.c:199:SP = lsp;
+; genAssign
+ mov sp,r5
+;../../device/lib/_setjmp.c:200:return rv;
+; genAssign
+ mov dph,r2
+ mov dpl,r3
+; genRet
+ ret
-int longjmp (unsigned char *bp, int rv)
+ _endasm;
+}
+
+#elif defined(SDCC_STACK_AUTO)
+
+static void dummy (void) _naked
{
- unsigned char lsp;
- lsp = *(bp+2);
- *((unsigned char data *) lsp) = *bp++;
- *((unsigned char data *) lsp - 1) = *bp;
- SP = lsp;
- return rv;
+ _asm
+
+;------------------------------------------------------------
+;Allocation info for local variables in function 'setjmp'
+;------------------------------------------------------------
+;buf Allocated to registers dptr b
+;------------------------------------------------------------
+;../../device/lib/_setjmp.c:122:int setjmp (unsigned char *buf)
+; -----------------------------------------
+; function setjmp
+; -----------------------------------------
+ .globl _setjmp
+_setjmp:
+ ar2 = 0x02
+ ar3 = 0x03
+ ar4 = 0x04
+ ar5 = 0x05
+ ar6 = 0x06
+ ar7 = 0x07
+ ar0 = 0x00
+ ar1 = 0x01
+; genReceive
+;../../device/lib/_setjmp.c:125:*buf = BP;
+; genPointerSet
+; genGenPointerSet
+ mov a,_bp
+ lcall __gptrput
+ inc dptr
+;../../device/lib/_setjmp.c:126:*buf = SP;
+; genPointerSet
+; genGenPointerSet
+ mov a,sp
+ lcall __gptrput
+ inc dptr
+;../../device/lib/_setjmp.c:127:*buf++ = *((unsigned char data *) SP );
+; genCast
+ mov r0,sp
+; genPointerGet
+; genNearPointerGet
+ mov a,@r0
+; genPointerSet
+; genGenPointerSet
+ lcall __gptrput
+ inc dptr
+;../../device/lib/_setjmp.c:128:*buf++ = *((unsigned char data *)SP - 1);
+; genCast
+; genMinus
+; genMinusDec
+ dec r0
+; genPointerGet
+; genNearPointerGet
+ mov a,@r0
+; genPointerSet
+; genGenPointerSet
+ lcall __gptrput
+;../../device/lib/_setjmp.c:129:return 0;
+; genRet
+ mov dptr,#0x0000
+ ret
+
+;------------------------------------------------------------
+;Allocation info for local variables in function 'longjmp'
+;------------------------------------------------------------
+;rv Allocated to stack - offset -3
+;buf Allocated to registers dptr b
+;lsp Allocated to registers r5
+;------------------------------------------------------------
+;../../device/lib/_setjmp.c:28:int longjmp (jmp_buf buf, int rv)
+; -----------------------------------------
+; function longjmp
+; -----------------------------------------
+ .globl _longjmp
+_longjmp:
+ ar2 = 0x02
+ ar3 = 0x03
+ ar4 = 0x04
+ ar5 = 0x05
+ ar6 = 0x06
+ ar7 = 0x07
+ ar0 = 0x00
+ ar1 = 0x01
+; genReceive
+ mov r0,sp
+ dec r0
+ dec r0
+ mov ar2,@r0
+ dec r0
+ mov ar3,@r0
+;../../device/lib/_setjmp.c:30:bp = *buf++;
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+ inc dptr
+; genAssign
+ mov _bp,a
+;../../device/lib/_setjmp.c:31:lsp = *buf++;
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+ inc dptr
+; genAssign
+ mov r5,a
+;../../device/lib/_setjmp.c:32:*((unsigned char data *) lsp) = *buf++;
+; genCast
+ mov r0,a
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+ inc dptr
+; genPointerSet
+; genNearPointerSet
+ mov @r0,a
+;../../device/lib/_setjmp.c:33:*((unsigned char data *) lsp - 1) = *buf;
+; genCast
+; genMinus
+; genMinusDec
+ dec r0
+; genPointerGet
+; genGenPointerGet
+ lcall __gptrget
+; genPointerSet
+; genNearPointerSet
+ mov @r0,a
+;../../device/lib/_setjmp.c:34:SP = lsp;
+; genAssign
+ mov sp,r5
+;../../device/lib/_setjmp.c:35:return rv;
+; genRet
+ mov dph,r2
+ mov dpl,r3
+ ret
+
+ _endasm;
}
-int setjmp (unsigned char *bp)
-{
+#else
+
+//extern unsigned char data bp;
+
+int setjmp (jmp_buf buf)
+{
/* registers would have been saved on the
stack anyway so we need to save SP
- and the return address */
- *bp++ = *((unsigned char data *) SP );
- *bp++ = *((unsigned char data *)SP - 1);
- *bp = SP;
+ and the return address */
+// *buf++ = bp;
+ *buf++ = SP;
+ *buf++ = *((unsigned char data *) SP );
+ *buf = *((unsigned char data *)SP - 1);
return 0;
}
+
+int longjmp (jmp_buf buf, int rv)
+{
+ unsigned char lsp;
+// bp = *buf++;
+ lsp = *buf++;
+ *((unsigned char data *) lsp) = *buf++;
+ *((unsigned char data *) lsp - 1) = *buf;
+ SP = lsp;
+ return rv;
+}
+
+#endif
projects / fw / sdcc / blobdiff