diff options
Diffstat (limited to 'gdb/mn10300-tdep.c')
-rw-r--r-- | gdb/mn10300-tdep.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/gdb/mn10300-tdep.c b/gdb/mn10300-tdep.c index ae7d2f5210f..d0d710abe34 100644 --- a/gdb/mn10300-tdep.c +++ b/gdb/mn10300-tdep.c @@ -893,6 +893,35 @@ mn10300_register_raw_size (int reg) return 4; } +/* If DWARF2 is a register number appearing in Dwarf2 debug info, then + mn10300_dwarf2_reg_to_regnum (DWARF2) is the corresponding GDB + register number. Why don't Dwarf2 and GDB use the same numbering? + Who knows? But since people have object files lying around with + the existing Dwarf2 numbering, and other people have written stubs + to work with the existing GDB, neither of them can change. So we + just have to cope. */ +static int +mn10300_dwarf2_reg_to_regnum (int dwarf2) +{ + /* This table is supposed to be shaped like the REGISTER_NAMES + initializer in gcc/config/mn10300/mn10300.h. Registers which + appear in GCC's numbering, but have no counterpart in GDB's + world, are marked with a -1. */ + static int dwarf2_to_gdb[] = { + 0, 1, 2, 3, 4, 5, 6, 7, -1, 8, + 15, 16, 17, 18, 19, 20, 21, 22 + }; + int gdb; + + if (dwarf2 < 0 + || dwarf2 >= (sizeof (dwarf2_to_gdb) / sizeof (dwarf2_to_gdb[0])) + || dwarf2_to_gdb[dwarf2] == -1) + internal_error (__FILE__, __LINE__, + "bogus register number in debug info: %d", dwarf2); + + return dwarf2_to_gdb[dwarf2]; +} + static void mn10300_print_register (const char *name, int regnum, int reg_width) { @@ -1041,6 +1070,7 @@ mn10300_gdbarch_init (struct gdbarch_info info, set_gdbarch_max_register_virtual_size (gdbarch, 4); set_gdbarch_register_virtual_size (gdbarch, mn10300_register_virtual_size); set_gdbarch_register_virtual_type (gdbarch, mn10300_register_virtual_type); + set_gdbarch_dwarf2_reg_to_regnum (gdbarch, mn10300_dwarf2_reg_to_regnum); set_gdbarch_do_registers_info (gdbarch, mn10300_do_registers_info); set_gdbarch_fp_regnum (gdbarch, 31); |