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1534 |
robertmh |
/* Assembly macros for 32-bit OpenRISC.
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Copyright (C) 1999, 2001, 2002, 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Based on sysdeps/powerpc/sysdep.h
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* FIXME: this file is severely fucked */
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#ifdef __ASSEMBLER__
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#ifdef __ELF__
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#if 1
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/* This seems to always be the case on PPC. (FIXME: maybe too on or32?) */
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#define ALIGNARG(log2) log2
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/* For ELF we need the `.type' directive to make shared libs work right. */
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#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
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#define ASM_SIZE_DIRECTIVE(name) .size name,.-name
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#endif
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/* FIXME: support PIC / PROF */
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#define CALL_MCOUNT /* Do nothing. */
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#define ENTRY(name) \
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ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
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ASM_TYPE_DIRECTIVE (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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#define EALIGN_W_0 /* No words to insert. */
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#define EALIGN_W_1 l.nop
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#define EALIGN_W_2 l.nop;l.nop
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#define EALIGN_W_3 l.nop;l.nop;l.nop
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#define EALIGN_W_4 EALIGN_W_3;l.nop
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#define EALIGN_W_5 EALIGN_W_4;l.nop
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#define EALIGN_W_6 EALIGN_W_5;l.nop
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#define EALIGN_W_7 EALIGN_W_6;l.nop
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/* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes
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past a 2^align boundary. */
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#ifdef PROF
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#define EALIGN(name, alignt, words) \
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ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
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ASM_TYPE_DIRECTIVE (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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b 0f; \
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.align ALIGNARG(alignt); \
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EALIGN_W_##words; \
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0:
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#else /* PROF */
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#define EALIGN(name, alignt, words) \
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ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
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ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \
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.align ALIGNARG(alignt); \
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EALIGN_W_##words; \
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C_LABEL(name)
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#endif
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#undef END
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#define END(name) \
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ASM_SIZE_DIRECTIVE(name)
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/* FIXME */
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#define DO_CALL
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#ifdef PIC
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#define JUMPTARGET(name) name##@plt
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#else
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#define JUMPTARGET(name) name
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#endif
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#define PSEUDO(name, syscall_name, args) \
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.section ".text"; \
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ENTRY (name) \
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DO_CALL (SYS_ify (syscall_name));
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#define PSEUDO_RET \
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l.j JUMPTARGET(__syscall_error)
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#define ret PSEUDO_RET
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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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/* Local labels stripped out by the linker. */
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#undef L
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#define L(x) .L##x
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/* Label in text section. */
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#define C_TEXT(name) name
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#endif /* __ELF__ */
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#endif /* __ASSEMBLER__ */
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