/* GNU/Linux/x86-64 specific low level interface, for the in-process
agent library for GDB.
- Copyright (C) 2010 Free Software Foundation, Inc.
+ Copyright (C) 2010-2015 Free Software Foundation, Inc.
This file is part of GDB.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "server.h"
+#include "tracepoint.h"
/* Defined in auto-generated file amd64-linux.c. */
void init_registers_amd64_linux (void);
+extern const struct target_desc *tdesc_amd64_linux;
/* fast tracepoints collect registers. */
((char *) buf) + x86_64_ft_collect_regmap[i]);
}
-/* This is only needed because reg-i386-linux-lib.o references it. We
- may use it proper at some point. */
-const char *gdbserver_xmltarget;
+IP_AGENT_EXPORT_FUNC ULONGEST
+gdb_agent_get_raw_reg (const unsigned char *raw_regs, int regnum)
+{
+ if (regnum >= X86_64_NUM_FT_COLLECT_GREGS)
+ return 0;
+
+ return *(ULONGEST *) (raw_regs + x86_64_ft_collect_regmap[regnum]);
+}
+
+#ifdef HAVE_UST
+
+#include <ust/processor.h>
+
+/* "struct registers" is the UST object type holding the registers at
+ the time of the static tracepoint marker call. This doesn't
+ contain RIP, but we know what it must have been (the marker
+ address). */
+
+#define ST_REGENTRY(REG) \
+ { \
+ offsetof (struct registers, REG), \
+ sizeof (((struct registers *) NULL)->REG) \
+ }
+
+static struct
+{
+ int offset;
+ int size;
+} x86_64_st_collect_regmap[] =
+ {
+ ST_REGENTRY(rax),
+ ST_REGENTRY(rbx),
+ ST_REGENTRY(rcx),
+ ST_REGENTRY(rdx),
+ ST_REGENTRY(rsi),
+ ST_REGENTRY(rdi),
+ ST_REGENTRY(rbp),
+ ST_REGENTRY(rsp),
+ ST_REGENTRY(r8),
+ ST_REGENTRY(r9),
+ ST_REGENTRY(r10),
+ ST_REGENTRY(r11),
+ ST_REGENTRY(r12),
+ ST_REGENTRY(r13),
+ ST_REGENTRY(r14),
+ ST_REGENTRY(r15),
+ { -1, 0 },
+ ST_REGENTRY(rflags),
+ ST_REGENTRY(cs),
+ ST_REGENTRY(ss),
+ };
+
+#define X86_64_NUM_ST_COLLECT_GREGS \
+ (sizeof (x86_64_st_collect_regmap) / sizeof (x86_64_st_collect_regmap[0]))
+
+/* GDB's RIP register number. */
+#define AMD64_RIP_REGNUM 16
+
+void
+supply_static_tracepoint_registers (struct regcache *regcache,
+ const unsigned char *buf,
+ CORE_ADDR pc)
+{
+ int i;
+ unsigned long newpc = pc;
+
+ supply_register (regcache, AMD64_RIP_REGNUM, &newpc);
+
+ for (i = 0; i < X86_64_NUM_ST_COLLECT_GREGS; i++)
+ if (x86_64_st_collect_regmap[i].offset != -1)
+ {
+ switch (x86_64_st_collect_regmap[i].size)
+ {
+ case 8:
+ supply_register (regcache, i,
+ ((char *) buf)
+ + x86_64_st_collect_regmap[i].offset);
+ break;
+ case 2:
+ {
+ unsigned long reg
+ = * (short *) (((char *) buf)
+ + x86_64_st_collect_regmap[i].offset);
+ reg &= 0xffff;
+ supply_register (regcache, i, ®);
+ }
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ "unhandled register size: %d",
+ x86_64_st_collect_regmap[i].size);
+ break;
+ }
+ }
+}
+
+#endif /* HAVE_UST */
void
initialize_low_tracepoint (void)
{
init_registers_amd64_linux ();
+ ipa_tdesc = tdesc_amd64_linux;
}