diff options
Diffstat (limited to 'gdb/amd64fbsd-nat.c')
| -rw-r--r-- | gdb/amd64fbsd-nat.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/gdb/amd64fbsd-nat.c b/gdb/amd64fbsd-nat.c index b1b261c..a721f48 100644 --- a/gdb/amd64fbsd-nat.c +++ b/gdb/amd64fbsd-nat.c @@ -151,6 +151,50 @@ amd64fbsd_mourn_inferior (struct target_ops *ops) super_mourn_inferior (ops); } +/* Implement the to_read_description method. */ + +static const struct target_desc * +amd64fbsd_read_description (struct target_ops *ops) +{ +#ifdef PT_GETXSTATE_INFO + static int xsave_probed; + static uint64_t xcr0; +#endif + struct reg regs; + int is64; + + if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) ®s, 0) == -1) + perror_with_name (_("Couldn't get registers")); + is64 = (regs.r_cs == GSEL (GUCODE_SEL, SEL_UPL)); +#ifdef PT_GETXSTATE_INFO + if (!xsave_probed) + { + struct ptrace_xstate_info info; + + if (ptrace (PT_GETXSTATE_INFO, ptid_get_pid (inferior_ptid), + (PTRACE_TYPE_ARG3) &info, sizeof (info)) == 0) + { + amd64bsd_xsave_len = info.xsave_len; + xcr0 = info.xsave_mask; + } + xsave_probed = 1; + } + + if (amd64bsd_xsave_len != 0) + { + if (is64) + return amd64_target_description (xcr0); + else + return i386_target_description (xcr0); + } +#endif + if (is64) + return tdesc_amd64; + else + return tdesc_i386; +} + /* Provide a prototype to silence -Wmissing-prototypes. */ void _initialize_amd64fbsd_nat (void); @@ -181,6 +225,7 @@ _initialize_amd64fbsd_nat (void) super_mourn_inferior = t->to_mourn_inferior; t->to_mourn_inferior = amd64fbsd_mourn_inferior; + t->to_read_description = amd64fbsd_read_description; t->to_pid_to_exec_file = fbsd_pid_to_exec_file; t->to_find_memory_regions = fbsd_find_memory_regions; |