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113 lines
2.0 KiB
PHP
113 lines
2.0 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 2008 by the Free Pascal development team.
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SetJmp and LongJmp implementation for exception handling
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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function fpc_setjmp(var S : jmp_buf) : shortint;assembler;[Public, alias : 'FPC_SETJMP'];nostackframe;compilerproc;
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asm
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mov r26,r24
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mov r27,r25
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st x+,r1
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st x+,r2
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st x+,r3
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st x+,r4
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st x+,r5
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st x+,r6
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st x+,r7
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st x+,r8
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st x+,r9
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st x+,r10
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st x+,r11
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st x+,r12
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st x+,r13
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st x+,r14
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st x+,r15
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st x+,r16
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st x+,r17
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st x+,r28
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st x+,r29
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// store stack pointer
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in r18,61
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in r19,62
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st x+,r18
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st x+,r19
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// store return address
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pop r18
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pop r19
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st x+,r18
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st x+,r19
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{$ifdef CPUAVR_3_BYTE_PC}
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pop r20
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st x+,r20
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push r20
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{$endif CPUAVR_3_BYTE_PC}
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push r19
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push r18
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clr r24
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end;
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procedure fpc_longjmp(var S : jmp_buf;value : shortint);assembler;[Public, alias : 'FPC_LONGJMP'];compilerproc;
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asm
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mov r26,r24
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mov r27,r25
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ld r1,x+
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ld r2,x+
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ld r3,x+
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ld r4,x+
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ld r5,x+
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ld r6,x+
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ld r7,x+
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ld r8,x+
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ld r9,x+
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ld r10,x+
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ld r11,x+
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ld r12,x+
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ld r13,x+
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ld r14,x+
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ld r15,x+
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ld r16,x+
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ld r17,x+
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ld r28,x+
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ld r29,x+
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// restore stack pointer
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ld r18,x+
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ld r19,x+
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in r0,63
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cli
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out 62,r19
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out 63,r0
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out 61,r18
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// restore return address
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pop r18
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pop r19
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ld r18,x+
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ld r19,x+
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{$ifdef CPUAVR_3_BYTE_PC}
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pop r20
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ld r20,x+
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push r20
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{$endif CPUAVR_3_BYTE_PC}
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push r19
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push r18
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mov r24,r22
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end;
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