| /* Copyright (C) 2011-2014 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 .size directive. */ |
| #define ASM_SIZE_DIRECTIVE(name) .size name,.-name; |
| |
| /* Define an entry point visible from C. */ |
| #define ENTRY(name) \ |
| .globl C_SYMBOL_NAME(name); \ |
| .type 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 tilepro 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 tilepro 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__ */ |
