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81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/* Assembler macro definitions. OpenRISC version.
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Copyright (C) 2022-2025 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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#include <features.h>
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#if defined __ASSEMBLER__ || defined REQUEST_ASSEMBLER_MACROS
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/* Make use of .size directive. */
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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 4; \
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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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ASM_SIZE_DIRECTIVE(name)
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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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/* If compiled for profiling, call `mcount' at the start of each function. */
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#ifdef PROF
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# ifdef __PIC__
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# define CALL_MCOUNT \
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l.addi r1, r1, -8; \
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l.sw 0(r1), r9; \
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l.sw 4(r1), r3; \
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l.ori r3, r9, 0; \
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l.j plt(_mcount); \
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l.nop; \
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l.lwz r9, 0(r1); \
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l.lwz r3, 4(r1); \
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l.addi r1, r1, 8;
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# else
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# define CALL_MCOUNT \
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l.addi r1, r1, -8; \
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l.sw 0(r1), r9; \
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l.sw 4(r1), r3; \
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l.ori r3, r9, 0; \
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l.movhi r15, hi(_mcount); \
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l.ori r15, r15, lo(_mcount); \
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l.jr r15; \
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l.nop; \
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l.lwz r9, 0(r1); \
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l.lwz r3, 4(r1); \
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l.addi r1, r1, 8;
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# endif
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#else
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# define CALL_MCOUNT /* Do nothing. */
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#endif
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/* Local label name for asm code. */
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#define L(name) .L##name
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#endif /* __ASSEMBLER__ */
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