1*c87b03e5Sespie /* Target definitions for GNU compiler for SPARC running System V.4 2*c87b03e5Sespie Copyright (C) 1991, 1992, 1995, 1996, 1997, 1998, 2000, 2002 3*c87b03e5Sespie Free Software Foundation, Inc. 4*c87b03e5Sespie Contributed by Ron Guilmette (rfg@monkeys.com). 5*c87b03e5Sespie 6*c87b03e5Sespie This file is part of GNU CC. 7*c87b03e5Sespie 8*c87b03e5Sespie GNU CC is free software; you can redistribute it and/or modify 9*c87b03e5Sespie it under the terms of the GNU General Public License as published by 10*c87b03e5Sespie the Free Software Foundation; either version 2, or (at your option) 11*c87b03e5Sespie any later version. 12*c87b03e5Sespie 13*c87b03e5Sespie GNU CC is distributed in the hope that it will be useful, 14*c87b03e5Sespie but WITHOUT ANY WARRANTY; without even the implied warranty of 15*c87b03e5Sespie MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16*c87b03e5Sespie GNU General Public License for more details. 17*c87b03e5Sespie 18*c87b03e5Sespie You should have received a copy of the GNU General Public License 19*c87b03e5Sespie along with GNU CC; see the file COPYING. If not, write to 20*c87b03e5Sespie the Free Software Foundation, 59 Temple Place - Suite 330, 21*c87b03e5Sespie Boston, MA 02111-1307, USA. */ 22*c87b03e5Sespie 23*c87b03e5Sespie #ifndef TARGET_VERSION 24*c87b03e5Sespie #define TARGET_VERSION fprintf (stderr, " (sparc ELF)"); 25*c87b03e5Sespie #endif 26*c87b03e5Sespie 27*c87b03e5Sespie /* ??? Put back the SIZE_TYPE/PTRDIFF_TYPE definitions set by sparc.h. 28*c87b03e5Sespie Why, exactly, is svr4.h messing with this? Seems like the chip 29*c87b03e5Sespie would know best. */ 30*c87b03e5Sespie 31*c87b03e5Sespie #undef SIZE_TYPE 32*c87b03e5Sespie #define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int") 33*c87b03e5Sespie 34*c87b03e5Sespie #undef PTRDIFF_TYPE 35*c87b03e5Sespie #define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int") 36*c87b03e5Sespie 37*c87b03e5Sespie /* Undefined some symbols which are defined in "svr4.h" but which are 38*c87b03e5Sespie appropriate only for typical svr4 systems, but not for the specific 39*c87b03e5Sespie case of svr4 running on a SPARC. */ 40*c87b03e5Sespie 41*c87b03e5Sespie #undef INIT_SECTION_ASM_OP 42*c87b03e5Sespie #undef FINI_SECTION_ASM_OP 43*c87b03e5Sespie #undef READONLY_DATA_SECTION_ASM_OP 44*c87b03e5Sespie #undef TYPE_OPERAND_FMT 45*c87b03e5Sespie #undef PUSHSECTION_FORMAT 46*c87b03e5Sespie #undef STRING_ASM_OP 47*c87b03e5Sespie #undef COMMON_ASM_OP 48*c87b03e5Sespie #undef SKIP_ASM_OP 49*c87b03e5Sespie #undef SET_ASM_OP /* Has no equivalent. See ASM_OUTPUT_DEF below. */ 50*c87b03e5Sespie 51*c87b03e5Sespie /* Provide a set of pre-definitions and pre-assertions appropriate for 52*c87b03e5Sespie the SPARC running svr4. __svr4__ is our extension. */ 53*c87b03e5Sespie 54*c87b03e5Sespie #undef CPP_PREDEFINES 55*c87b03e5Sespie #define CPP_PREDEFINES \ 56*c87b03e5Sespie "-Dsparc -Dunix -D__svr4__ -Asystem=unix -Asystem=svr4" 57*c87b03e5Sespie 58*c87b03e5Sespie /* The native assembler can't compute differences between symbols in different 59*c87b03e5Sespie sections when generating pic code, so we must put jump tables in the 60*c87b03e5Sespie text section. */ 61*c87b03e5Sespie /* But we now defer the tables to the end of the function, so we make 62*c87b03e5Sespie this 0 to not confuse the branch shortening code. */ 63*c87b03e5Sespie #define JUMP_TABLES_IN_TEXT_SECTION 0 64*c87b03e5Sespie 65*c87b03e5Sespie /* Pass -K to the assembler when PIC. */ 66*c87b03e5Sespie #undef ASM_SPEC 67*c87b03e5Sespie #define ASM_SPEC \ 68*c87b03e5Sespie "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \ 69*c87b03e5Sespie %{fpic:-K PIC} %{fPIC:-K PIC} %(asm_cpu)" 70*c87b03e5Sespie 71*c87b03e5Sespie /* Define the names of various pseudo-op used by the SPARC/svr4 assembler. 72*c87b03e5Sespie Note that many of these are different from the typical pseudo-ops used 73*c87b03e5Sespie by most svr4 assemblers. That is probably due to a (misguided?) attempt 74*c87b03e5Sespie to keep the SPARC/svr4 assembler somewhat compatible with the SPARC/SunOS 75*c87b03e5Sespie assembler. */ 76*c87b03e5Sespie 77*c87b03e5Sespie #define STRING_ASM_OP "\t.asciz\t" 78*c87b03e5Sespie #define COMMON_ASM_OP "\t.common\t" 79*c87b03e5Sespie #define SKIP_ASM_OP "\t.skip\t" 80*c87b03e5Sespie #define PUSHSECTION_ASM_OP "\t.pushsection\t" 81*c87b03e5Sespie #define POPSECTION_ASM_OP "\t.popsection" 82*c87b03e5Sespie 83*c87b03e5Sespie /* This is the format used to print the second operand of a .type pseudo-op 84*c87b03e5Sespie for the SPARC/svr4 assembler. */ 85*c87b03e5Sespie 86*c87b03e5Sespie #define TYPE_OPERAND_FMT "#%s" 87*c87b03e5Sespie 88*c87b03e5Sespie /* This is the format used to print a .pushsection pseudo-op (and its operand) 89*c87b03e5Sespie for the SPARC/svr4 assembler. */ 90*c87b03e5Sespie 91*c87b03e5Sespie #define PUSHSECTION_FORMAT "%s\"%s\"\n" 92*c87b03e5Sespie 93*c87b03e5Sespie #undef ASM_OUTPUT_CASE_LABEL 94*c87b03e5Sespie #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, JUMPTABLE) \ 95*c87b03e5Sespie do { ASM_OUTPUT_ALIGN ((FILE), Pmode == SImode ? 2 : 3); \ 96*c87b03e5Sespie ASM_OUTPUT_INTERNAL_LABEL ((FILE), PREFIX, NUM); \ 97*c87b03e5Sespie } while (0) 98*c87b03e5Sespie 99*c87b03e5Sespie /* This is how to equate one symbol to another symbol. The syntax used is 100*c87b03e5Sespie `SYM1=SYM2'. Note that this is different from the way equates are done 101*c87b03e5Sespie with most svr4 assemblers, where the syntax is `.set SYM1,SYM2'. */ 102*c87b03e5Sespie 103*c87b03e5Sespie #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ 104*c87b03e5Sespie do { fprintf ((FILE), "\t"); \ 105*c87b03e5Sespie assemble_name (FILE, LABEL1); \ 106*c87b03e5Sespie fprintf (FILE, " = "); \ 107*c87b03e5Sespie assemble_name (FILE, LABEL2); \ 108*c87b03e5Sespie fprintf (FILE, "\n"); \ 109*c87b03e5Sespie } while (0) 110*c87b03e5Sespie 111*c87b03e5Sespie /* Define how the SPARC registers should be numbered for Dwarf output. 112*c87b03e5Sespie The numbering provided here should be compatible with the native 113*c87b03e5Sespie svr4 SDB debugger in the SPARC/svr4 reference port. The numbering 114*c87b03e5Sespie is as follows: 115*c87b03e5Sespie 116*c87b03e5Sespie Assembly name gcc internal regno Dwarf regno 117*c87b03e5Sespie ---------------------------------------------------------- 118*c87b03e5Sespie g0-g7 0-7 0-7 119*c87b03e5Sespie o0-o7 8-15 8-15 120*c87b03e5Sespie l0-l7 16-23 16-23 121*c87b03e5Sespie i0-i7 24-31 24-31 122*c87b03e5Sespie f0-f31 32-63 40-71 123*c87b03e5Sespie */ 124*c87b03e5Sespie 125*c87b03e5Sespie #define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 32 ? (REGNO) : (REGNO) + 8) 126*c87b03e5Sespie 127*c87b03e5Sespie /* A set of symbol definitions for assembly pseudo-ops which will 128*c87b03e5Sespie get us switched to various sections of interest. These are used 129*c87b03e5Sespie in all places where we simply want to switch to a section, and 130*c87b03e5Sespie *not* to push the previous section name onto the assembler's 131*c87b03e5Sespie section names stack (as we do often in dwarfout.c). */ 132*c87b03e5Sespie 133*c87b03e5Sespie #define TEXT_SECTION_ASM_OP "\t.section\t\".text\"" 134*c87b03e5Sespie #define DATA_SECTION_ASM_OP "\t.section\t\".data\"" 135*c87b03e5Sespie #define BSS_SECTION_ASM_OP "\t.section\t\".bss\"" 136*c87b03e5Sespie #define READONLY_DATA_SECTION_ASM_OP "\t.section\t\".rodata\"" 137*c87b03e5Sespie #define INIT_SECTION_ASM_OP "\t.section\t\".init\"" 138*c87b03e5Sespie #define FINI_SECTION_ASM_OP "\t.section\t\".fini\"" 139*c87b03e5Sespie 140*c87b03e5Sespie /* Define the pseudo-ops used to switch to the .ctors and .dtors sections. 141*c87b03e5Sespie 142*c87b03e5Sespie Note that we want to give these sections the SHF_WRITE attribute 143*c87b03e5Sespie because these sections will actually contain data (i.e. tables of 144*c87b03e5Sespie addresses of functions in the current root executable or shared library 145*c87b03e5Sespie file) and, in the case of a shared library, the relocatable addresses 146*c87b03e5Sespie will have to be properly resolved/relocated (and then written into) by 147*c87b03e5Sespie the dynamic linker when it actually attaches the given shared library 148*c87b03e5Sespie to the executing process. (Note that on SVR4, you may wish to use the 149*c87b03e5Sespie `-z text' option to the ELF linker, when building a shared library, as 150*c87b03e5Sespie an additional check that you are doing everything right. But if you do 151*c87b03e5Sespie use the `-z text' option when building a shared library, you will get 152*c87b03e5Sespie errors unless the .ctors and .dtors sections are marked as writable 153*c87b03e5Sespie via the SHF_WRITE attribute.) */ 154*c87b03e5Sespie 155*c87b03e5Sespie #undef CTORS_SECTION_ASM_OP 156*c87b03e5Sespie #define CTORS_SECTION_ASM_OP "\t.section\t\".ctors\",#alloc,#write" 157*c87b03e5Sespie #undef DTORS_SECTION_ASM_OP 158*c87b03e5Sespie #define DTORS_SECTION_ASM_OP "\t.section\t\".dtors\",#alloc,#write" 159*c87b03e5Sespie 160*c87b03e5Sespie /* Switch into a generic section. */ 161*c87b03e5Sespie #undef TARGET_ASM_NAMED_SECTION 162*c87b03e5Sespie #define TARGET_ASM_NAMED_SECTION sparc_elf_asm_named_section 163*c87b03e5Sespie 164*c87b03e5Sespie /* A C statement (sans semicolon) to output to the stdio stream 165*c87b03e5Sespie FILE the assembler definition of uninitialized global DECL named 166*c87b03e5Sespie NAME whose size is SIZE bytes and alignment is ALIGN bytes. 167*c87b03e5Sespie Try to use asm_output_aligned_bss to implement this macro. */ 168*c87b03e5Sespie 169*c87b03e5Sespie #undef ASM_OUTPUT_ALIGNED_BSS 170*c87b03e5Sespie #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 171*c87b03e5Sespie asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 172*c87b03e5Sespie 173*c87b03e5Sespie /* Override the name of the mcount profiling function. */ 174*c87b03e5Sespie 175*c87b03e5Sespie #undef MCOUNT_FUNCTION 176*c87b03e5Sespie #define MCOUNT_FUNCTION "*_mcount" 177