diff options
Diffstat (limited to 'ports/sysdeps/tile/sysdep.h')
| -rw-r--r-- | ports/sysdeps/tile/sysdep.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/ports/sysdeps/tile/sysdep.h b/ports/sysdeps/tile/sysdep.h new file mode 100644 index 0000000000..58432eb032 --- /dev/null +++ b/ports/sysdeps/tile/sysdep.h @@ -0,0 +1,111 @@ +/* Copyright (C) 2011 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. + + 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> +#include <bits/wordsize.h> +#include <arch/abi.h> + +#if defined __ASSEMBLER__ || defined REQUEST_ASSEMBLER_MACROS + +#include <feedback.h> + +/* Make use of .type and .size directives. */ +#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg; +#define ASM_SIZE_DIRECTIVE(name) .size name,.-name; + +/* Define an entry point visible from C. */ +#define ENTRY(name) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ + ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ + .align 8; \ + C_LABEL(name) \ + cfi_startproc; \ + CALL_MCOUNT + +#undef END +#define END(name) \ + cfi_endproc; \ + ASM_SIZE_DIRECTIVE(name) + +/* Since C identifiers are not normally prefixed with an underscore + on this system, the asm identifier `syscall_error' intrudes on the + C name space. Make sure we use an innocuous name. */ +#define syscall_error __syscall_error +#define mcount __mcount + +/* If compiled for profiling, call `mcount' at the start of each function. + The mcount code requires the caller PC in r10. The `mcount' function + sets lr back to the value r10 had on entry when it returns. */ +#ifdef PROF +#define CALL_MCOUNT { move r10, lr; jal mcount } +#else +#define CALL_MCOUNT /* Do nothing. */ +#endif + +/* Local label name for asm code. */ +#define L(name) .L##name + +/* Specify the size in bytes of a machine register. */ +#ifdef __tilegx__ +#define REGSIZE 8 +#else +#define REGSIZE 4 +#endif + +/* Support a limited form of shared assembly between tile and tilegx. + The presumption is that LD/ST are used for manipulating registers. + Since opcode parsing is case-insensitive, we don't need to provide + definitions for these on tilegx. */ +#ifndef __tilegx__ +#define LD lw +#define LD4U lw +#define ST sw +#define ST4 sw +#define BNEZ bnz +#define BEQZ bz +#define BEQZT bzt +#define BGTZ bgz +#define CMPEQI seqi +#define CMPEQ seq +#define CMOVEQZ mvz +#define CMOVNEZ mvnz +#endif + +/* Provide "pointer-oriented" instruction variants. These differ not + just for tile vs tilegx, but also for tilegx -m64 vs -m32. */ +#if defined __tilegx__ && __WORDSIZE == 32 +#define ADD_PTR addx +#define ADDI_PTR addxi +#define ADDLI_PTR addxli +#define LD_PTR ld4s +#define ST_PTR st4 +#define SHL_PTR_ADD shl2add +#else +#define ADD_PTR add +#define ADDI_PTR addi +#define ADDLI_PTR addli +#define LD_PTR LD +#define ST_PTR ST +#ifdef __tilegx__ +#define SHL_PTR_ADD shl3add +#else +#define SHL_PTR_ADD s2a +#endif +#endif + +#endif /* __ASSEMBLER__ */ |