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-rw-r--r--gdb/avr-tdep.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/gdb/avr-tdep.c b/gdb/avr-tdep.c
index fc4e0f0..6beac3d 100644
--- a/gdb/avr-tdep.c
+++ b/gdb/avr-tdep.c
@@ -36,6 +36,7 @@
#include "regcache.h"
#include "gdb_string.h"
#include "dis-asm.h"
+#include "linux-tdep.h"
/* AVR Background:
@@ -190,6 +191,19 @@ struct gdbarch_tdep
struct type *pc_type;
};
+/* This enum represents the signals' numbers on the AVR
+ architecture. It just contains the signal definitions which are
+ different from the generic implementation.
+
+ It is derived from the file <arch/avr32/include/uapi/asm/signal.h>,
+ from the Linux kernel tree. */
+
+enum
+ {
+ AVR_LINUX_SIGRTMIN = 32,
+ AVR_LINUX_SIGRTMAX = 63,
+ };
+
/* Lookup the name of a register given it's number. */
static const char *
@@ -1341,6 +1355,60 @@ avr_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
return -1;
}
+/* Implementation of `gdbarch_gdb_signal_from_target', as defined in
+ gdbarch.h. */
+
+static enum gdb_signal
+avr_linux_gdb_signal_from_target (struct gdbarch *gdbarch, int signal)
+{
+ if (signal >= AVR_LINUX_SIGRTMIN && signal <= AVR_LINUX_SIGRTMAX)
+ {
+ int offset = signal - AVR_LINUX_SIGRTMIN;
+
+ if (offset == 0)
+ return GDB_SIGNAL_REALTIME_32;
+ else
+ return (enum gdb_signal) (offset - 1
+ + (int) GDB_SIGNAL_REALTIME_33);
+ }
+ else if (signal > AVR_LINUX_SIGRTMAX)
+ return GDB_SIGNAL_UNKNOWN;
+
+ return linux_gdb_signal_from_target (gdbarch, signal);
+}
+
+/* Implementation of `gdbarch_gdb_signal_to_target', as defined in
+ gdbarch.h. */
+
+static int
+avr_linux_gdb_signal_to_target (struct gdbarch *gdbarch,
+ enum gdb_signal signal)
+{
+ switch (signal)
+ {
+ /* GDB_SIGNAL_REALTIME_32 is not continuous in <gdb/signals.def>,
+ therefore we have to handle it here. */
+ case GDB_SIGNAL_REALTIME_32:
+ return AVR_LINUX_SIGRTMIN;
+
+ /* GDB_SIGNAL_REALTIME_64 is not valid on AVR. */
+ case GDB_SIGNAL_REALTIME_64:
+ return -1;
+ }
+
+ /* GDB_SIGNAL_REALTIME_33 to _63 are continuous.
+ AVR does not have _64. */
+ if (signal >= GDB_SIGNAL_REALTIME_33
+ && signal <= GDB_SIGNAL_REALTIME_63)
+ {
+ int offset = signal - GDB_SIGNAL_REALTIME_33;
+
+ return AVR_LINUX_SIGRTMIN + 1 + offset;
+ }
+
+ return linux_gdb_signal_to_target (gdbarch, signal);
+}
+
/* Initialize the gdbarch structure for the AVR's. */
static struct gdbarch *
@@ -1444,6 +1512,11 @@ avr_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_unwind_pc (gdbarch, avr_unwind_pc);
set_gdbarch_unwind_sp (gdbarch, avr_unwind_sp);
+ set_gdbarch_gdb_signal_from_target (gdbarch,
+ avr_linux_gdb_signal_from_target);
+ set_gdbarch_gdb_signal_to_target (gdbarch,
+ avr_linux_gdb_signal_to_target);
+
return gdbarch;
}