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cf7c22b5d8
* m68k/Makefile.in (bdm-semihost.o): Build from bdm-semihost.S. * m68k/bdm-semihost.c: Remove. * m68k/bdm-semihost.S: New. * m68k/bdm-crt0.S: Don't install semihosting trap handler. * m68k/bdm-close.c, bdm-exit.c, bdm-fstat.c, bdm-gettimeofday.c, bdm-isatty.c, bdm-lseek.c, bdm-open.c, bdm-read.c, bdm-rename.c, bdm-stat.c, bdm-system.c, bdm-unlink.c, bdm-write.c): Update. * m68k/bdm-isrs.c: Update comment. * m68k/bdm-semihost.h (BDM_TRAPNUM, BDM_FUNC_REG, BDM_ARG_REG, BDM_TRAP): Remove. (__bdm_semihost): Declare.
36 lines
1.1 KiB
ArmAsm
36 lines
1.1 KiB
ArmAsm
/*
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* bdm-semihost.S --
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*
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* Copyright (c) 2006 CodeSourcery Inc
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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/* Semihosting function. The debugger intercepts the halt, and
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determines that it is followed by the magic movec pattern. */
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.globl __bdm_semihost
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__bdm_semihost:
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linkw %fp,#0
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movel %fp@(8),%d0
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movel %fp@(12),%d1
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.align 4
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nop
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halt
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/* This sentinel instruction value must be aligned to a 4 byte
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* boundary and be immediately after the halt instruction. The
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* debugger will adjust the pc, so that it is never executed. */
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.long 0x4e7b0000
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unlk %fp
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rts
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