diff options
Diffstat (limited to 'gcc/config/rs6000/lynx.h')
| -rw-r--r-- | gcc/config/rs6000/lynx.h | 146 |
1 files changed, 85 insertions, 61 deletions
diff --git a/gcc/config/rs6000/lynx.h b/gcc/config/rs6000/lynx.h index b32b07890ae..fb02f517d6f 100644 --- a/gcc/config/rs6000/lynx.h +++ b/gcc/config/rs6000/lynx.h @@ -1,6 +1,8 @@ /* Definitions for Rs6000 running LynxOS. - Copyright (C) 1995, 1996, 2000, 2002, 2003 Free Software Foundation, Inc. + Copyright (C) 1995, 1996, 2000, 2002, 2003, 2004 + Free Software Foundation, Inc. Contributed by David Henkel-Wallace, Cygnus Support (gumby@cygnus.com) + Rewritten by Adam Nemet, LynuxWorks Inc. This file is part of GCC. @@ -19,69 +21,91 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* Print subsidiary information on the compiler version in use. */ -#define TARGET_VERSION fprintf (stderr, " (LynxOS-RS/6000)"); - -/* LynxOS has signed chars, regardless of what most R/S 6000 systems do */ -#undef DEFAULT_SIGNED_CHAR -#define DEFAULT_SIGNED_CHAR 1 - -#undef TARGET_OS_CPP_BUILTINS -#define TARGET_OS_CPP_BUILTINS() \ - do \ - { \ - builtin_assert ("cpu=rs6000"); \ - builtin_assert ("machine=rs6000"); \ - builtin_assert ("system=lynx"); \ - builtin_assert ("system=unix"); \ - builtin_define_std ("Lynx"); \ - builtin_define ("_IBMR2"); \ - builtin_define_std ("unix"); \ - builtin_define_std ("rs6000"); \ - builtin_define_std ("lynx"); \ - builtin_define_std ("LYNX"); \ - } \ - while (0) +/* Override the definition in sysv4.h. */ + +#undef TARGET_VERSION +#define TARGET_VERSION fputs (" (PowerPC/LynxOS)", stderr); + +/* Undefine the definition to enable the LynxOS default from the + top-level lynx.h. */ + +#undef SUBTARGET_EXTRA_SPECS + +/* Get rid off the spec definitions from rs6000/sysv4.h. */ -#undef LINK_SPEC -#define LINK_SPEC "-T0x10001000 -H0x1000 -D0x20000000 -btextro -bhalt:4 -bnodelcsect -bnso -bro -bnoglink %{v} %{b*}" +#undef CPP_SPEC +#define CPP_SPEC \ +"%{msoft-float: -D_SOFT_FLOAT} \ + %(cpp_cpu) \ + %(cpp_os_lynx)" -#undef LIB_SPEC -#define LIB_SPEC "%{mthreads:-L/lib/thread/} \ - %{msystem-v:-lc_v -lm.v} \ - %{!msystem-v:%{mposix:-lc_p} -lc -lm}" +/* LynxOS only supports big-endian on PPC so we override the + definition from sysv4.h. Since the LynxOS 4.0 compiler was set to + return every structure in memory regardless of their size we have + to emulate the same behavior here with disabling the SVR4 structure + returning. */ -#undef STARTFILE_SPEC -#define STARTFILE_SPEC "%{p:%{mthreads:thread/pinit.o%s}%{!mthreads:pinit.o%s}}%{!p:%{msystem-v:vinit.o%s -e_start}%{!msystem-v:%{mthreads:thread/init.o%s}%{!mthreads:init.o%s}}}" +#undef CC1_SPEC +#define CC1_SPEC \ +"%{G*} %{mno-sdata:-msdata=none} \ + %{maltivec:-mabi=altivec} \ + -mno-svr4-struct-return" +#undef ASM_SPEC +#define ASM_SPEC \ +"%(asm_cpu) \ + %{.s: %{mregnames} %{mno-regnames}} \ + %{.S: %{mregnames} %{mno-regnames}}" + +#undef STARTFILE_SPEC #undef ENDFILE_SPEC +#undef LIB_SPEC +#undef LINK_SPEC +#define LINK_SPEC \ +"%{!msdata=none:%{G*}} %{msdata=none:-G0} \ + %(link_os_lynx)" + +/* Override the definition from sysv4.h. */ + +#undef TARGET_OS_CPP_BUILTINS +#define TARGET_OS_CPP_BUILTINS() \ + do \ + { \ + builtin_define ("__BIG_ENDIAN__"); \ + builtin_define ("__powerpc__"); \ + builtin_assert ("cpu=powerpc"); \ + builtin_assert ("machine=powerpc"); \ + builtin_define ("__PPC__"); \ + } \ + while (0) + +/* Override the rs6000.h definition. */ + +#undef ASM_APP_ON +#define ASM_APP_ON "#APP\n" + +/* Override the rs6000.h definition. */ + +#undef ASM_APP_OFF +#define ASM_APP_OFF "#NO_APP\n" + +#undef EXTRA_SUBTARGET_SWITCHES +#define EXTRA_SUBTARGET_SWITCHES SUBTARGET_OS_LYNX_SWITCHES + +/* LynxOS does not do anything with .fixup plus let's not create + writable section for linkonce.r and linkonce.t. */ + +#undef RELOCATABLE_NEEDS_FIXUP + +/* Override these from rs6000.h with the generic definition. */ + +#undef SIZE_TYPE +#undef ASM_OUTPUT_ALIGN +#undef PREFERRED_DEBUGGING_TYPE + +/* The file rs6000.c defines TARGET_HAVE_TLS unconditionally to the + value of HAVE_AS_TLS. HAVE_AS_TLS is true as gas support for TLS + is detected by configure. Override the definition to false. */ -/* This can become more refined as we have more powerpc options. */ -#undef ASM_SPEC -#define ASM_SPEC "-u %(asm_cpu)" - -#undef SUBTARGET_SWITCHES -#define SUBTARGET_SWITCHES \ - {"threads", MASK_THREADS}, \ - {"posix", MASK_POSIX}, \ - {"system-v", MASK_SYSTEM_V}, - -#undef SUBTARGET_OVERRIDE_OPTIONS -#define SUBTARGET_OVERRIDE_OPTIONS \ -do { \ - if (TARGET_SYSTEM_V && profile_flag) \ - warning ("-msystem-v and -p are incompatible"); \ - if (TARGET_SYSTEM_V && TARGET_THREADS) \ - warning ("-msystem-v and -mthreads are incompatible"); \ -} while (0) - -/* For collect2 */ -#define OBJECT_FORMAT_NONE -#undef OBJECT_FORMAT_COFF -#undef MD_EXEC_PREFIX -#undef REAL_LD_FILE_NAME -#undef REAL_STRIP_FILE_NAME - -/* LynxOS doesn't have mcount. */ -#undef FUNCTION_PROFILER -#define FUNCTION_PROFILER(file, profile_label_no) +#undef HAVE_AS_TLS +#define HAVE_AS_TLS 0 |