[PATCH] Retrieve segment registers on Windows amd64
Jon TURNEY
jon.turney@dronecode.org.uk
Fri Feb 20 12:59:00 GMT 2015
For amd64, CONTEXT_FULL does not contain CONTEXT_SEGMENTS, which seems to be
needed to retrieve all the segment registers. Add it explicitly, with a little
de-cruftification.
The value of the segment registers isn't terribly useful on amd64, but at least
this makes the output of 'info registers' correct.
before:
(gdb) i r cs ss ds es fs gs
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
after:
(gdb) i r cs ss ds es fs gs
cs 0x33 51
ss 0x2b 43
ds 0x2b 43
es 0x2b 43
fs 0x53 83
gs 0x2b 43
gdb/ChangeLog
2015-02-19 Jon TURNEY <jon.turney@dronecode.org.uk>
* windows-nat.c (CONTEXT_DEBUGGER_DR): Add CONTEXT_SEGMENTS.
---
gdb/windows-nat.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 9c2dca1..ec11822 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -130,7 +130,6 @@ static CONTEXT saved_context; /* Containes the saved context from a
enum
{
FLAG_TRACE_BIT = 0x100,
- CONTEXT_DEBUGGER = (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
};
#endif
@@ -140,8 +139,8 @@ enum
#define CONTEXT_EXTENDED_REGISTERS 0
#endif
-#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \
- | CONTEXT_EXTENDED_REGISTERS
+#define CONTEXT_DEBUGGER_DR CONTEXT_FULL | CONTEXT_FLOATING_POINT \
+ | CONTEXT_SEGMENTS | CONTEXT_DEBUG_REGISTERS | CONTEXT_EXTENDED_REGISTERS
static uintptr_t dr[8];
static int debug_registers_changed;
--
2.1.4
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