75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/* Assembler macros for m68k.
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Copyright (C) 1998-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdeps/generic/sysdep.h>
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#ifdef __ASSEMBLER__
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/* Define an entry point visible from C.
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There is currently a bug in gdb which prevents us from specifying
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incomplete stabs information. Fake some entries here which specify
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the current source file. */
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# define ENTRY(name) \
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.globl C_SYMBOL_NAME(name); \
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.type C_SYMBOL_NAME(name),@function; \
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.p2align 2; \
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C_LABEL(name) \
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cfi_startproc; \
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CALL_MCOUNT
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# undef END
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# define END(name) \
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cfi_endproc; \
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.size name,.-name
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/* If compiled for profiling, call `_mcount' at the start of each function. */
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# ifdef PROF
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/* The mcount code relies on a normal frame pointer being on the stack
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to locate our caller, so push one just for its benefit. */
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# define CALL_MCOUNT \
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move.l %fp, -(%sp); \
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cfi_adjust_cfa_offset (4); cfi_rel_offset (%a6, 0); \
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move.l %sp, %fp; \
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jbsr JUMPTARGET (_mcount); \
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move.l (%sp)+, %fp; \
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cfi_adjust_cfa_offset (-4); cfi_restore (%a6);
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# else
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# define CALL_MCOUNT /* Do nothing. */
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# endif
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# define PSEUDO(name, syscall_name, args) \
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.globl __syscall_error; \
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ENTRY (name) \
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DO_CALL (syscall_name, args); \
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jcc JUMPTARGET(__syscall_error)
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# undef PSEUDO_END
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# define PSEUDO_END(name) \
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END (name)
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# undef JUMPTARGET
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# ifdef PIC
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# define JUMPTARGET(name) name##@PLTPC
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# else
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# define JUMPTARGET(name) name
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# endif
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#endif /* __ASSEMBLER__ */
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