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- /* Assembler macros for m68k.
- Copyright (C) 1998-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C 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
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library. If not, see
- <http://www.gnu.org/licenses/>. */
- #include <sysdeps/generic/sysdep.h>
- #ifdef __ASSEMBLER__
- /* Define an entry point visible from C.
- There is currently a bug in gdb which prevents us from specifying
- incomplete stabs information. Fake some entries here which specify
- the current source file. */
- # define ENTRY(name) \
- .globl C_SYMBOL_NAME(name); \
- .type C_SYMBOL_NAME(name),@function; \
- .p2align 2; \
- C_LABEL(name) \
- cfi_startproc; \
- CALL_MCOUNT
- # undef END
- # define END(name) \
- cfi_endproc; \
- .size name,.-name
- /* If compiled for profiling, call `_mcount' at the start of each function. */
- # ifdef PROF
- /* The mcount code relies on a normal frame pointer being on the stack
- to locate our caller, so push one just for its benefit. */
- # define CALL_MCOUNT \
- move.l %fp, -(%sp); \
- cfi_adjust_cfa_offset (4); cfi_rel_offset (%a6, 0); \
- move.l %sp, %fp; \
- jbsr JUMPTARGET (_mcount); \
- move.l (%sp)+, %fp; \
- cfi_adjust_cfa_offset (-4); cfi_restore (%a6);
- # else
- # define CALL_MCOUNT /* Do nothing. */
- # endif
- # define PSEUDO(name, syscall_name, args) \
- .globl __syscall_error; \
- ENTRY (name) \
- DO_CALL (syscall_name, args); \
- jcc JUMPTARGET(__syscall_error)
- # undef PSEUDO_END
- # define PSEUDO_END(name) \
- END (name)
- # undef JUMPTARGET
- # ifdef PIC
- # define JUMPTARGET(name) name##@PLTPC
- # else
- # define JUMPTARGET(name) name
- # endif
- #endif /* __ASSEMBLER__ */
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