125 lines
4.0 KiB
C
125 lines
4.0 KiB
C
/* Definitions of target machine for GNU compiler,
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for Alpha Linux-based GNU systems.
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Copyright (C) 1996, 1997, 1998, 2002, 2003 Free Software Foundation, Inc.
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Contributed by Richard Henderson.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_FP | MASK_FPREGS | MASK_GAS)
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#define TARGET_OS_CPP_BUILTINS() \
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do { \
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builtin_define ("__gnu_linux__"); \
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builtin_define ("_LONGLONG"); \
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builtin_define_std ("linux"); \
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builtin_define_std ("unix"); \
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builtin_assert ("system=linux"); \
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builtin_assert ("system=unix"); \
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builtin_assert ("system=posix"); \
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/* The GNU C++ standard library requires this. */ \
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if (c_dialect_cxx ()) \
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builtin_define ("_GNU_SOURCE"); \
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} while (0)
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#undef LIB_SPEC
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#define LIB_SPEC \
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"%{pthread:-lpthread} \
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%{shared:-lc} \
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%{!shared: %{profile:-lc_p}%{!profile:-lc}}"
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/* Show that we need a GP when profiling. */
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#undef TARGET_PROFILING_NEEDS_GP
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#define TARGET_PROFILING_NEEDS_GP 1
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/* Don't care about faults in the prologue. */
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#undef TARGET_CAN_FAULT_IN_PROLOGUE
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#define TARGET_CAN_FAULT_IN_PROLOGUE 1
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/* OS fixes up EV5 data fault on prefetch. */
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#undef TARGET_FIXUP_EV5_PREFETCH
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#define TARGET_FIXUP_EV5_PREFETCH 1
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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/* Define this so that all GNU/Linux targets handle the same pragmas. */
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#define HANDLE_PRAGMA_PACK_PUSH_POP
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/* Determine whether the the entire c99 runtime is present in the
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runtime library. */
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#define TARGET_C99_FUNCTIONS 1
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#define TARGET_HAS_F_SETLKW
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#define LINK_GCC_C_SEQUENCE_SPEC \
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"%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
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/* Do code reading to identify a signal frame, and set the frame
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state data appropriately. See unwind-dw2.c for the structs. */
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#ifdef IN_LIBGCC2
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#include <signal.h>
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#include <sys/ucontext.h>
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#endif
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#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
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do { \
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unsigned int *pc_ = (CONTEXT)->ra; \
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struct sigcontext *sc_; \
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long new_cfa_, i_; \
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\
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if (pc_[0] != 0x47fe0410 /* mov $30,$16 */ \
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|| pc_[2] != 0x00000083 /* callsys */) \
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break; \
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if ((CONTEXT)->cfa == 0) \
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break; \
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if (pc_[1] == 0x201f0067) /* lda $0,NR_sigreturn */ \
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sc_ = (CONTEXT)->cfa; \
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else if (pc_[1] == 0x201f015f) /* lda $0,NR_rt_sigreturn */ \
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{ \
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struct rt_sigframe { \
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struct siginfo info; \
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struct ucontext uc; \
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} *rt_ = (CONTEXT)->cfa; \
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sc_ = &rt_->uc.uc_mcontext; \
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} \
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else \
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break; \
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new_cfa_ = sc_->sc_regs[30]; \
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(FS)->cfa_how = CFA_REG_OFFSET; \
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(FS)->cfa_reg = 30; \
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(FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
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for (i_ = 0; i_ < 30; ++i_) \
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{ \
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(FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_].loc.offset \
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= (long)&sc_->sc_regs[i_] - new_cfa_; \
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} \
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for (i_ = 0; i_ < 31; ++i_) \
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{ \
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(FS)->regs.reg[i_+32].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_+32].loc.offset \
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= (long)&sc_->sc_fpregs[i_] - new_cfa_; \
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} \
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(FS)->regs.reg[64].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[64].loc.offset = (long)&sc_->sc_pc - new_cfa_; \
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(FS)->retaddr_column = 64; \
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goto SUCCESS; \
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} while (0)
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