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| author | John Baldwin <jhb@FreeBSD.org> | 2023-08-28 14:18:19 -0700 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2023-08-28 14:18:19 -0700 |
| commit | 24ef2641d917695470fb2d43dabb133e3ee6678f (patch) | |
| tree | e2c1d0a8672860555ec19964967dfebddb9a090e /gdb/x86-fbsd-nat.c | |
| parent | 22ca5c10279903a221ba4580afef71af0c639704 (diff) | |
| download | binutils-24ef2641d917695470fb2d43dabb133e3ee6678f.zip binutils-24ef2641d917695470fb2d43dabb133e3ee6678f.tar.gz binutils-24ef2641d917695470fb2d43dabb133e3ee6678f.tar.bz2 | |
gdb: Support XSAVE layouts for the current host in the FreeBSD x86 targets.
Use the CPUID instruction to fetch the offsets of supported state
components.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Diffstat (limited to 'gdb/x86-fbsd-nat.c')
| -rw-r--r-- | gdb/x86-fbsd-nat.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gdb/x86-fbsd-nat.c b/gdb/x86-fbsd-nat.c index 5d1c9fc..240e228 100644 --- a/gdb/x86-fbsd-nat.c +++ b/gdb/x86-fbsd-nat.c @@ -19,6 +19,9 @@ #include "defs.h" #include "x86-fbsd-nat.h" +#ifdef PT_GETXSTATE_INFO +#include "nat/x86-xstate.h" +#endif /* Implement the virtual fbsd_nat_target::low_new_fork method. */ @@ -43,3 +46,21 @@ x86_fbsd_nat_target::low_new_fork (ptid_t parent, pid_t child) child_state = x86_debug_reg_state (child); *child_state = *parent_state; } + +#ifdef PT_GETXSTATE_INFO +void +x86_fbsd_nat_target::probe_xsave_layout (pid_t pid) +{ + if (m_xsave_probed) + return; + + m_xsave_probed = true; + + if (ptrace (PT_GETXSTATE_INFO, pid, (PTRACE_TYPE_ARG3) &m_xsave_info, + sizeof (m_xsave_info)) != 0) + return; + if (m_xsave_info.xsave_len != 0) + m_xsave_layout = x86_fetch_xsave_layout (m_xsave_info.xsave_mask, + m_xsave_info.xsave_len); +} +#endif |