| /* 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 |
| |
| /* OS fixes up EV5 data fault on prefetch. */ |
| #undef TARGET_FIXUP_EV5_PREFETCH |
| #define TARGET_FIXUP_EV5_PREFETCH 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) |