diff options
Diffstat (limited to 'gdb/gdbserver/linux-x86-64-low.c')
| -rw-r--r-- | gdb/gdbserver/linux-x86-64-low.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/gdb/gdbserver/linux-x86-64-low.c b/gdb/gdbserver/linux-x86-64-low.c index fa7440d..fdf5ee1 100644 --- a/gdb/gdbserver/linux-x86-64-low.c +++ b/gdb/gdbserver/linux-x86-64-low.c @@ -1,6 +1,6 @@ /* GNU/Linux/x86-64 specific low level interface, for the remote server for GDB. - Copyright 2002, 2004 + Copyright 2002, 2004, 2005 Free Software Foundation, Inc. This file is part of GDB. @@ -129,9 +129,53 @@ struct regset_info target_regsets[] = { { 0, 0, -1, -1, NULL, NULL } }; +static const unsigned char x86_64_breakpoint[] = { 0xCC }; +#define x86_64_breakpoint_len 1 + +extern int debug_threads; + +static CORE_ADDR +x86_64_get_pc () +{ + unsigned long pc; + + collect_register_by_name ("rip", &pc); + + if (debug_threads) + fprintf (stderr, "stop pc (before any decrement) is %08lx\n", pc); + return pc; +} + +static void +x86_64_set_pc (CORE_ADDR newpc) +{ + if (debug_threads) + fprintf (stderr, "set pc to %08lx\n", (long) newpc); + supply_register_by_name ("rip", &newpc); +} + +static int +x86_64_breakpoint_at (CORE_ADDR pc) +{ + unsigned char c; + + read_inferior_memory (pc, &c, 1); + if (c == 0xCC) + return 1; + + return 0; +} + struct linux_target_ops the_low_target = { -1, NULL, NULL, NULL, + x86_64_get_pc, + x86_64_set_pc, + x86_64_breakpoint, + x86_64_breakpoint_len, + NULL, + 1, + x86_64_breakpoint_at, }; |