85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/* Assembler macros for C-SKY.
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Copyright (C) 2018 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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<http://www.gnu.org/licenses/>. */
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#include <sysdeps/generic/sysdep.h>
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#include <features.h>
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#ifdef __ASSEMBLER__
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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 name; \
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.type name,@function; \
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.align 4; \
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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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/* 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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subi sp, 4; \
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stw lr, (sp, 0); \
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grs t0, .Lgetpc; \
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.Lgetpc: \
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lrw gb, .Lgetpc@GOTPC; \
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addu gb, t0; \
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lrw t1, _mcount@PLT; \
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ldr.w t0, (gb, t1 << 0); \
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jmp t0;
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# else
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# define CALL_MCOUNT \
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subi sp, 4; \
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stw lr, (sp, 0); \
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jbsr _mcount;
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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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# if defined (__CK860__)
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/* Instruction fetch will be faster when the label is 16 bytes aligned.
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Filling with nop instruction to avoid extra jump. */
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# define LABLE_ALIGN \
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.balignw 16, 0x6c03
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# define PRE_BNEZAD(R)
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# define BNEZAD(R, L) \
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bnezad R, L
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# else
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# define LABLE_ALIGN \
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.balignw 8, 0x6c03
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# define PRE_BNEZAD(R) \
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subi R, 1
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# define BNEZAD(R, L) \
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bnez R, L
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# endif
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#endif
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