/* Target-dependent code for GNU/Linux on Alpha.
- Copyright (C) 2002, 2003, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2002-2014 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "frame.h"
#include "gdb_assert.h"
-#include "gdb_string.h"
+#include <string.h>
#include "osabi.h"
#include "solib-svr4.h"
#include "symtab.h"
#include "regset.h"
#include "regcache.h"
-
+#include "linux-tdep.h"
#include "alpha-tdep.h"
+/* This enum represents the signals' numbers on the Alpha
+ architecture. It just contains the signal definitions which are
+ different from the generic implementation.
+
+ It is derived from the file <arch/alpha/include/uapi/asm/signal.h>,
+ from the Linux kernel tree. */
+
+enum
+ {
+ /* SIGABRT is the same as in the generic implementation, but is
+ defined here because SIGIOT depends on it. */
+ ALPHA_LINUX_SIGABRT = 6,
+ ALPHA_LINUX_SIGEMT = 7,
+ ALPHA_LINUX_SIGBUS = 10,
+ ALPHA_LINUX_SIGSYS = 12,
+ ALPHA_LINUX_SIGURG = 16,
+ ALPHA_LINUX_SIGSTOP = 17,
+ ALPHA_LINUX_SIGTSTP = 18,
+ ALPHA_LINUX_SIGCONT = 19,
+ ALPHA_LINUX_SIGCHLD = 20,
+ ALPHA_LINUX_SIGIO = 23,
+ ALPHA_LINUX_SIGINFO = 29,
+ ALPHA_LINUX_SIGUSR1 = 30,
+ ALPHA_LINUX_SIGUSR2 = 31,
+ ALPHA_LINUX_SIGPOLL = ALPHA_LINUX_SIGIO,
+ ALPHA_LINUX_SIGPWR = ALPHA_LINUX_SIGINFO,
+ ALPHA_LINUX_SIGIOT = ALPHA_LINUX_SIGABRT,
+ };
+
/* Under GNU/Linux, signal handler invocations can be identified by
the designated code sequence that is used to return from a signal
handler. In particular, the return address of a signal handler
(2) the kernel has changed from using "addq" to "lda" to load the
syscall number,
(3) there is a "normal" sigreturn and an "rt" sigreturn which
- has a different stack layout.
-*/
+ has a different stack layout. */
static long
alpha_linux_sigtramp_offset_1 (struct gdbarch *gdbarch, CORE_ADDR pc)
static int
alpha_linux_pc_in_sigtramp (struct gdbarch *gdbarch,
- CORE_ADDR pc, char *func_name)
+ CORE_ADDR pc, const char *func_name)
{
return alpha_linux_sigtramp_offset (gdbarch, pc) >= 0;
}
struct ucontext uc;
};
- offsetof (struct rt_sigframe, uc.uc_mcontext);
- */
+ offsetof (struct rt_sigframe, uc.uc_mcontext); */
+
if (alpha_read_insn (gdbarch, pc - off + 4) == 0x201f015f)
return sp + 176;
return NULL;
}
+/* Implementation of `gdbarch_gdb_signal_from_target', as defined in
+ gdbarch.h. */
+
+static enum gdb_signal
+alpha_linux_gdb_signal_from_target (struct gdbarch *gdbarch,
+ int signal)
+{
+ switch (signal)
+ {
+ case ALPHA_LINUX_SIGEMT:
+ return GDB_SIGNAL_EMT;
+
+ case ALPHA_LINUX_SIGBUS:
+ return GDB_SIGNAL_BUS;
+
+ case ALPHA_LINUX_SIGSYS:
+ return GDB_SIGNAL_SYS;
+
+ case ALPHA_LINUX_SIGURG:
+ return GDB_SIGNAL_URG;
+
+ case ALPHA_LINUX_SIGSTOP:
+ return GDB_SIGNAL_STOP;
+
+ case ALPHA_LINUX_SIGTSTP:
+ return GDB_SIGNAL_TSTP;
+
+ case ALPHA_LINUX_SIGCONT:
+ return GDB_SIGNAL_CONT;
+
+ case ALPHA_LINUX_SIGCHLD:
+ return GDB_SIGNAL_CHLD;
+
+ /* No way to differentiate between SIGIO and SIGPOLL.
+ Therefore, we just handle the first one. */
+ case ALPHA_LINUX_SIGIO:
+ return GDB_SIGNAL_IO;
+
+ /* No way to differentiate between SIGINFO and SIGPWR.
+ Therefore, we just handle the first one. */
+ case ALPHA_LINUX_SIGINFO:
+ return GDB_SIGNAL_INFO;
+
+ case ALPHA_LINUX_SIGUSR1:
+ return GDB_SIGNAL_USR1;
+
+ case ALPHA_LINUX_SIGUSR2:
+ return GDB_SIGNAL_USR2;
+ }
+
+ return linux_gdb_signal_from_target (gdbarch, signal);
+}
+
+/* Implementation of `gdbarch_gdb_signal_to_target', as defined in
+ gdbarch.h. */
+
+static int
+alpha_linux_gdb_signal_to_target (struct gdbarch *gdbarch,
+ enum gdb_signal signal)
+{
+ switch (signal)
+ {
+ case GDB_SIGNAL_EMT:
+ return ALPHA_LINUX_SIGEMT;
+
+ case GDB_SIGNAL_BUS:
+ return ALPHA_LINUX_SIGBUS;
+
+ case GDB_SIGNAL_SYS:
+ return ALPHA_LINUX_SIGSYS;
+
+ case GDB_SIGNAL_URG:
+ return ALPHA_LINUX_SIGURG;
+
+ case GDB_SIGNAL_STOP:
+ return ALPHA_LINUX_SIGSTOP;
+
+ case GDB_SIGNAL_TSTP:
+ return ALPHA_LINUX_SIGTSTP;
+
+ case GDB_SIGNAL_CONT:
+ return ALPHA_LINUX_SIGCONT;
+
+ case GDB_SIGNAL_CHLD:
+ return ALPHA_LINUX_SIGCHLD;
+
+ case GDB_SIGNAL_IO:
+ return ALPHA_LINUX_SIGIO;
+
+ case GDB_SIGNAL_INFO:
+ return ALPHA_LINUX_SIGINFO;
+
+ case GDB_SIGNAL_USR1:
+ return ALPHA_LINUX_SIGUSR1;
+
+ case GDB_SIGNAL_USR2:
+ return ALPHA_LINUX_SIGUSR2;
+
+ case GDB_SIGNAL_POLL:
+ return ALPHA_LINUX_SIGPOLL;
+
+ case GDB_SIGNAL_PWR:
+ return ALPHA_LINUX_SIGPWR;
+ }
+
+ return linux_gdb_signal_to_target (gdbarch, signal);
+}
+
static void
alpha_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep;
+ linux_init_abi (info, gdbarch);
+
/* Hook into the DWARF CFI frame unwinder. */
alpha_dwarf2_init_abi (info, gdbarch);
set_gdbarch_regset_from_core_section
(gdbarch, alpha_linux_regset_from_core_section);
+
+ set_gdbarch_gdb_signal_from_target (gdbarch,
+ alpha_linux_gdb_signal_from_target);
+ set_gdbarch_gdb_signal_to_target (gdbarch,
+ alpha_linux_gdb_signal_to_target);
}
/* Provide a prototype to silence -Wmissing-prototypes. */
projects / deliverable / binutils-gdb.git / blobdiff