86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/* Copyright (C) 1997-2022 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 License as
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published by the Free Software Foundation; either version 2.1 of the
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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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/* Syntactic details of assembler. */
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# define ALIGNARG(log2) log2
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# define ASM_SIZE_DIRECTIVE(name) .size name,.-name
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/* Define an entry point visible from C. */
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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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.align ALIGNARG(2); \
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C_LABEL(name) \
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CALL_MCOUNT
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# undef END
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# define END(name) ASM_SIZE_DIRECTIVE(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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addik r1,r1,-4; \
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swi r15,r1,0; \
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brlid r15,JUMPTARGET(mcount); \
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nop; \
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lwi r15,r1,0; \
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addik r1,r1,4;
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# else
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# define CALL_MCOUNT /* Do nothing. */
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# endif
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/* Since C identifiers are not normally prefixed with an underscore
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on this system, the asm identifier `syscall_error' intrudes on the
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C name space. Make sure we use an innocuous name. */
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# define syscall_error __syscall_error
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# define mcount _mcount
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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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# define ret \
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rtsd r15,8; nop;
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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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/* Local label name for asm code. */
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# ifndef L
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# define L(name) $L##name
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# endif
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# endif /* __ASSEMBLER__ */
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