diff options
| -rw-r--r-- | gcc/config/m68k/pbb.h | 154 | ||||
| -rw-r--r-- | gcc/config/sparc/pbd.h | 72 |
2 files changed, 213 insertions, 13 deletions
diff --git a/gcc/config/m68k/pbb.h b/gcc/config/m68k/pbb.h new file mode 100644 index 00000000000..a88c1c2df49 --- /dev/null +++ b/gcc/config/m68k/pbb.h @@ -0,0 +1,154 @@ +/* Definitions of target machine for GNU compiler. + + Citicorp/TTI Unicom PBB version (using GAS with a %-register prefix) + + Copyright (C) 1987, 1988, 1990 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC 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 General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Note: This config uses a version of gas with a postprocessing stage that + converts the output of gas to coff containing stab debug symbols. + (See vasta@apollo.com or mb@soldev.tti.com) */ + +#include "m68k.h" + +/* See m68k.h. 5 means 68020 without 68881. */ + +#define TARGET_DEFAULT 5 + +/* Every structure or union's size must be a multiple of 2 bytes. */ +#define STRUCTURE_SIZE_BOUNDARY 16 + +/* Define __HAVE_68881__ in preprocessor if -m68881 is specified. + This will control the use of inline 68881 insns in certain macros. */ + +#define CPP_SPEC "%{m68881:-D__HAVE_68881__}" + +/* Names to predefine in the preprocessor for this target machine. */ + +#define CPP_PREDEFINES "-Dm68k -Dunix -DUnicomPBB -Dmc68k -Dmc68020 -Dmc68k32" + +/* We want DBX format for use with gdb under COFF. */ + +#define DBX_DEBUGGING_INFO + +/* Generate calls to memcpy, memcmp and memset. */ + +#define TARGET_MEM_FUNCTIONS + +/* -m68000 requires special flags to the assembler. */ + +#define ASM_SPEC \ + " %{m68000:-mc68010}%{mc68000:-mc68010}" + +/* we use /lib/libp/lib* when profiling */ + +#define LIB_SPEC "%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc" + + +/* Use crt1.o as a startup file and crtn.o as a closing file. */ +/* + * The loader directive file gcc.ifile defines how to merge the constructor + * sections into the data section. Also, since gas only puts out those + * sections in response to N_SETT stabs, and does not (yet) have a + * ".sections" directive, gcc.ifile also defines the list symbols + * __DTOR_LIST__ and __CTOR_LIST__. + * + * Finally, we must explicitly specify the file from libgcc.a that defines + * exit(), otherwise if the user specifies (for example) "-lc_s" on the + * command line, the wrong exit() will be used and global destructors will + * not get called . + */ + +#define STARTFILE_SPEC \ +"%{!r: gcc.ifile%s} %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \ +%{!r:_exit.o%s}" + +#define ENDFILE_SPEC "crtn.o%s" + +/* cpp has to support a #sccs directive for the /usr/include files */ + +#define SCCS_DIRECTIVE + +/* GAS register prefix assembly syntax: */ + +/* User labels have no prefix */ +#undef USER_LABEL_PREFIX +#define USER_LABEL_PREFIX "" + +/* local labels are prefixed with ".L" */ +#undef LOCAL_LABEL_PREFIX +#define LOCAL_LABEL_PREFIX "." + +/* registers are prefixed with "%" */ +#undef REGISTER_PREFIX +#define REGISTER_PREFIX "%" + +#undef REGISTER_NAMES +#define REGISTER_NAMES \ +{"%d0", "%d1", "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \ + "%a0", "%a1", "%a2", "%a3", "%a4", "%a5", "%a6", "%sp", \ + "%fp0", "%fp1", "%fp2", "%fp3", "%fp4", "%fp5", "%fp6", "%fp7"} + +#undef FUNCTION_EXTRA_EPILOGUE +#define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE) \ + { extern int current_function_returns_pointer; \ + if ((current_function_returns_pointer) && \ + ! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode)) \ + asm_fprintf (FILE, "\tmovl %Rd0,%Ra0\n"); } + +#define ASM_RETURN_CASE_JUMP return "jmp %%pc@(2,%0:w)" + +/* Although the gas we use can create .ctor and .dtor sections from N_SETT + stabs, it does not support section directives, so we need to have the loader + define the lists. + */ +#define CTOR_LISTS_DEFINED_EXTERNALLY + +/* similar to default, but allows for the table defined by ld with gcc.ifile. + nptrs is always 0. So we need to instead check that __DTOR_LIST__[1] != 0. + The old check is left in so that the same macro can be used if and when + a future version of gas does support section directives. */ + +#define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \ + if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0)) \ + for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++); \ + for (i = nptrs; i >= 1; i--) \ + __DTOR_LIST__[i] (); } + +/* + * Here is an example gcc.ifile. I've tested it on PBB 68k and on sco 386 + * systems. The NEXT(0x200000) works on just about all 386 and m68k systems, + * but can be reduced to any power of 2 that is >= NBPS (0x10000 on a pbb). + + SECTIONS { + .text BIND(0x200200) BLOCK (0x200) : + { *(.init) *(.text) vfork = fork; *(.fini) } + + GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)): + { .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ; + __DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; } + .bss : { } + } + } + */ + +/* +Local variables: +version-control: t +End: +*/ diff --git a/gcc/config/sparc/pbd.h b/gcc/config/sparc/pbd.h index 83173989b31..1b75fe23144 100644 --- a/gcc/config/sparc/pbd.h +++ b/gcc/config/sparc/pbd.h @@ -31,7 +31,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* We want DBX format for use with gdb under COFF. */ #define DBX_DEBUGGING_INFO -#define DBX_IN_COFF /* Generate calls to memcpy, memcmp and memset. */ @@ -40,25 +39,71 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* we use /lib/libp/lib* when profiling */ #undef LIB_SPEC -#define LIB_SPEC "%{!shlib:%{p:-L/lib/libp} %{pg:-L/lib/libp} -lc} \ - %{shlib:-lc_s crtn.o%s }" +#define LIB_SPEC "%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc" -/* shared libraries need to use crt1.o */ -#ifdef USE_GPLUS_IFILE -#define STARTFILE_SPEC \ - "g++.ifile%s %{!shlib:%{pg:mcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}\ - %{shlib:crt1.o%s } " -#else +/* Use crt1.o as a startup file and crtn.o as a closing file. */ +/* + * The loader directive file gcc.ifile defines how to merge the constructor + * sections into the data section. Also, since gas only puts out those + * sections in response to N_SETT stabs, and does not (yet) have a + * ".sections" directive, gcc.ifile also defines the list symbols + * __DTOR_LIST__ and __CTOR_LIST__. + * + * Finally, we must explicitly specify the file from libgcc.a that defines + * exit(), otherwise if the user specifies (for example) "-lc_s" on the + * command line, the wrong exit() will be used and global destructors will + * not get called . + */ + #define STARTFILE_SPEC \ - "%{!shlib:%{pg:mcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}\ - %{shlib:crt1.o%s } " -#endif +"%{!r: gcc.ifile%s} %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} \ +%{!r:_exit.o%s}" + +#define ENDFILE_SPEC "crtn.o%s" /* cpp has to support a #sccs directive for the /usr/include files */ #define SCCS_DIRECTIVE +/* LINK_SPEC is needed only for Sunos 4. */ + +#undef LINK_SPEC + +/* Although the gas we use can create .ctor and .dtor sections from N_SETT + stabs, it does not support section directives, so we need to have the loader + define the lists. + */ +#define CTOR_LISTS_DEFINED_EXTERNALLY + +/* similar to default, but allows for the table defined by ld with gcc.ifile. + nptrs is always 0. So we need to instead check that __DTOR_LIST__[1] != 0. + The old check is left in so that the same macro can be used if and when + a future version of gas does support section directives. */ + +#define DO_GLOBAL_DTORS_BODY {int nptrs = *(int *)__DTOR_LIST__; int i; \ + if (nptrs == -1 || (__DTOR_LIST__[0] == 0 && __DTOR_LIST__[1] != 0)) \ + for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++); \ + for (i = nptrs; i >= 1; i--) \ + __DTOR_LIST__[i] (); } + +/* + * Here is an example gcc.ifile. I've tested it on PBD sparc + * systems. The NEXT(0x200000) works on just about all 386 and m68k systems, + * but can be reduced to any power of 2 that is >= NBPS (0x40000 on a pbd). + + SECTIONS { + .text BIND(0x41000200) BLOCK (0x200) : + { *(.init) *(.text) vfork = fork; *(.fini) } + + GROUP BIND( NEXT(0x200000) + ADDR(.text) + SIZEOF(.text)): + { .data : { __CTOR_LIST__ = . ; . += 4; *(.ctor) . += 4 ; + __DTOR_LIST__ = . ; . += 4; *(.dtor) . += 4 ; } + .bss : { } + } + } + */ + #ifndef __GNUC__ #define USE_C_ALLOCA #endif @@ -105,7 +150,8 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ fprintf (FILE, "\t.word .L%d\n", VALUE) -/* Underscores are not used on Unicom PBB coff systems. */ +/* Underscores are not used on Unicom PBD coff systems. */ +/* This currently seems to only be needed for libgcc2.a */ #define NO_UNDERSCORES /* Output assembler code to FILE to increment profiler label # LABELNO |