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78 lines
2.3 KiB
PHP
78 lines
2.3 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 2003 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) : longint;assembler;[Public, alias : 'FPC_SETJMP'];nostackframe; compilerproc;
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asm
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{$if defined(FPUVFPV2) or defined(FPUVFPV3) or defined(FPUVFPV3_D16)}
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{$if defined(CPUARMV3) or defined(CPUARMV4) or defined(CPUARMV5)}
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fstmiax r0!, {d8-d15}
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// according to the ARM Developer Suite Assembler Guide Version 1.2
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// fstmiad increases the address register always by 2n+1 words, so fix this
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sub r0,r0,#4
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{$else}
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fstmiad r0!, {d8-d15}
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{$endif}
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{$endif}
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{$if defined(CPUCORTEXM3) or defined(CPUARMV7M)}
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stmia r0!, {v1-v6, sl, fp}
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mov r2, sp
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stmia r0!, {r2, lr}
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mov r0,#0
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mov pc,lr
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{$else}
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stmia r0,{v1-v6, sl, fp, sp, lr}
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mov r0,#0
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bx lr
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{$endif}
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end;
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procedure fpc_longjmp(var S : jmp_buf;value : longint);assembler;[Public, alias : 'FPC_LONGJMP']; compilerproc;
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asm
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{$if defined(CPUCORTEXM3) or defined(CPUARMV7M)}
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mov ip, r0
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movs r0, r1
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it eq
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moveq r0, #1
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{$if defined(FPUVFPV2) or defined(FPUVFPV3) or defined(FPUVFPV3_D16)}
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fldmiad ip!, {d8-d15}
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{$endif}
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ldmia ip!, {v1-v6, sl, fp}
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ldr sp, [ip]
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add ip, ip, #4
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ldr pc, [ip]
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{$else}
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mov ip, r0
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movs r0, r1
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moveq r0, #1
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{$if defined(FPUVFPV2) or defined(FPUVFPV3) or defined(FPUVFPV3_D16)}
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{$if defined(CPUARMV3) or defined(CPUARMV4) or defined(CPUARMV5)}
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fldmiax ip!, {d8-d15}
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// according to the ARM Developer Suite Assembler Guide Version 1.2
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// increases fldmiax the address register always by 2n+1 words, so fix this
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sub ip,ip,#4
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{$else}
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fldmiad ip!, {d8-d15}
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{$endif}
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{$endif}
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ldmia ip,{v1-v6, sl, fp, sp, pc}
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{$endif}
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end;
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