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/* Definitions of target machine for GNU compiler,
for Alpha Linux-based GNU systems.
Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
Contributed by Richard Henderson.
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, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_FP | MASK_FPREGS | MASK_GAS)
#undef CPP_PREDEFINES
#define CPP_PREDEFINES \
"-Dlinux -Dunix -Asystem=linux -D_LONGLONG -D__alpha__ " \
SUB_CPP_PREDEFINES
/* The GNU C++ standard library requires that these macros be defined. */
#undef CPLUSPLUS_CPP_SPEC
#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
#undef LIB_SPEC
#define LIB_SPEC \
"%{shared: -lc} \
%{!shared: %{pthread:-lpthread} \
%{profile:-lc_p} %{!profile: -lc}}"
/* Show that we need a GP when profiling. */
#undef TARGET_PROFILING_NEEDS_GP
#define TARGET_PROFILING_NEEDS_GP 1
/* Don't care about faults in the prologue. */
#undef TARGET_CAN_FAULT_IN_PROLOGUE
#define TARGET_CAN_FAULT_IN_PROLOGUE 1
#undef WCHAR_TYPE
#define WCHAR_TYPE "int"
/* Define this so that all GNU/Linux targets handle the same pragmas. */
#define HANDLE_PRAGMA_PACK_PUSH_POP
/* Do code reading to identify a signal frame, and set the frame
state data appropriately. See unwind-dw2.c for the structs. */
#ifdef IN_LIBGCC2
#include <signal.h>
#include <sys/ucontext.h>
#endif
#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
do { \
unsigned int *pc_ = (CONTEXT)->ra; \
struct sigcontext *sc_; \
long new_cfa_, i_; \
\
if (pc_[0] != 0x47fe0410 /* mov $30,$16 */ \
|| pc_[2] != 0x00000083 /* callsys */) \
break; \
if (pc_[1] == 0x201f0067) /* lda $0,NR_sigreturn */ \
sc_ = (CONTEXT)->cfa; \
else if (pc_[1] == 0x201f015f) /* lda $0,NR_rt_sigreturn */ \
{ \
struct rt_sigframe { \
struct siginfo info; \
struct ucontext uc; \
} *rt_ = (CONTEXT)->cfa; \
sc_ = &rt_->uc.uc_mcontext; \
} \
else \
break; \
new_cfa_ = sc_->sc_regs[30]; \
(FS)->cfa_how = CFA_REG_OFFSET; \
(FS)->cfa_reg = 30; \
(FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
for (i_ = 0; i_ < 30; ++i_) \
{ \
(FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[i_].loc.offset \
= (long)&sc_->sc_regs[i_] - new_cfa_; \
} \
for (i_ = 0; i_ < 31; ++i_) \
{ \
(FS)->regs.reg[i_+32].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[i_+32].loc.offset \
= (long)&sc_->sc_fpregs[i_] - new_cfa_; \
} \
(FS)->regs.reg[31].how = REG_SAVED_OFFSET; \
(FS)->regs.reg[31].loc.offset = (long)&sc_->sc_pc - new_cfa_; \
(FS)->retaddr_column = 31; \
goto SUCCESS; \
} while (0)
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