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Diffstat (limited to 'gdb/config/alpha/tm-alphalinux.h')
| -rw-r--r-- | gdb/config/alpha/tm-alphalinux.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/gdb/config/alpha/tm-alphalinux.h b/gdb/config/alpha/tm-alphalinux.h new file mode 100644 index 00000000000..d836a7054c8 --- /dev/null +++ b/gdb/config/alpha/tm-alphalinux.h @@ -0,0 +1,80 @@ +/* Definitions to make GDB run on an Alpha box under Linux. The + definitions here are used when the _target_ system is running Linux. + Copyright 1996 Free Software Foundation, Inc. + +This file is part of GDB. + +This program 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 of the License, or +(at your option) any later version. + +This program 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 this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifndef TM_LINUXALPHA_H +#define TM_LINUXALPHA_H + +#include "alpha/tm-alpha.h" + +/* Are we currently handling a signal ? */ + +extern long alpha_linux_sigtramp_offset PARAMS ((CORE_ADDR)); +#undef IN_SIGTRAMP +#define IN_SIGTRAMP(pc, name) (alpha_linux_sigtramp_offset (pc) >= 0) + +/* Get start and end address of sigtramp handler. */ + +#define SIGTRAMP_START(pc) (pc - alpha_linux_sigtramp_offset (pc)) +#define SIGTRAMP_END(pc) (SIGTRAMP_START(pc) + 3*4) + + +/* Number of traps that happen between exec'ing the shell to run an + inferior, and when we finally get to the inferior code. This is 2 + on Linux and most implementations. */ + +#undef START_INFERIOR_TRAPS_EXPECTED +#define START_INFERIOR_TRAPS_EXPECTED 2 + +/* Return TRUE if procedure descriptor PROC is a procedure descriptor + that refers to a dynamically generated sigtramp function. */ + +#undef PROC_DESC_IS_DYN_SIGTRAMP +#define PROC_SIGTRAMP_MAGIC 0x0e0f0f0f +#define PROC_DESC_IS_DYN_SIGTRAMP(proc) ((proc)->pdr.isym \ + == PROC_SIGTRAMP_MAGIC) +#undef SET_PROC_DESC_IS_DYN_SIGTRAMP +#define SET_PROC_DESC_IS_DYN_SIGTRAMP(proc) ((proc)->pdr.isym \ + = PROC_SIGTRAMP_MAGIC) + +/* If PC is inside a dynamically generated sigtramp function, return + how many bytes the program counter is beyond the start of that + function. Otherwise, return a negative value. */ + +#undef DYNAMIC_SIGTRAMP_OFFSET +#define DYNAMIC_SIGTRAMP_OFFSET(pc) (alpha_linux_sigtramp_offset (pc)) + +/* Translate a signal handler frame into the address of the sigcontext + structure. */ + +#undef SIGCONTEXT_ADDR +#define SIGCONTEXT_ADDR(frame) ((frame)->frame - 0x298) + +/* If FRAME refers to a sigtramp frame, return the address of the next frame. + + Under Linux, sigtramp handlers have dynamically generated procedure + descriptors that make this hack unnecessary. */ + +#undef FRAME_PAST_SIGTRAMP_FRAME +#define FRAME_PAST_SIGTRAMP_FRAME(frame, pc) (0) + +/* We need this for the SOLIB_TRAMPOLINE stuff. */ +#include "tm-sysv4.h" + +#endif /* TM_LINUXALPHA_H */ |