diff options
Diffstat (limited to 'gdb/gdbserver/linux-ia64-low.c')
| -rw-r--r-- | gdb/gdbserver/linux-ia64-low.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/gdb/gdbserver/linux-ia64-low.c b/gdb/gdbserver/linux-ia64-low.c index 8753190..c8fa603 100644 --- a/gdb/gdbserver/linux-ia64-low.c +++ b/gdb/gdbserver/linux-ia64-low.c @@ -256,7 +256,7 @@ static int ia64_regmap[] = -1, -1, -1, -1, -1, -1, -1, -1, -1, PT_AR_PFS, PT_AR_LC, - -1, /* Not available: EC, the Epilog Count register */ + PT_AR_EC, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, @@ -278,6 +278,48 @@ ia64_cannot_fetch_register (int regno) return 0; } +/* GDB register numbers. */ +#define IA64_GR0_REGNUM 0 +#define IA64_FR0_REGNUM 128 +#define IA64_FR1_REGNUM 129 + +static int +ia64_fetch_register (struct regcache *regcache, int regnum) +{ + /* r0 cannot be fetched but is always zero. */ + if (regnum == IA64_GR0_REGNUM) + { + const gdb_byte zero[8] = { 0 }; + + gdb_assert (sizeof (zero) == register_size (regnum)); + supply_register (regcache, regnum, zero); + return 1; + } + + /* fr0 cannot be fetched but is always zero. */ + if (regnum == IA64_FR0_REGNUM) + { + const gdb_byte f_zero[16] = { 0 }; + + gdb_assert (sizeof (f_zero) == register_size (regnum)); + supply_register (regcache, regnum, f_zero); + return 1; + } + + /* fr1 cannot be fetched but is always one (1.0). */ + if (regnum == IA64_FR1_REGNUM) + { + const gdb_byte f_one[16] = + { 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0xff, 0, 0, 0, 0, 0, 0 }; + + gdb_assert (sizeof (f_one) == register_size (regnum)); + supply_register (regcache, regnum, f_one); + return 1; + } + + return 0; +} + struct linux_target_ops the_low_target = { init_registers_ia64, ia64_num_regs, @@ -285,4 +327,5 @@ struct linux_target_ops the_low_target = { NULL, ia64_cannot_fetch_register, ia64_cannot_store_register, + ia64_fetch_register, }; |