/* Darwin support for GDB, the GNU debugger.
- Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1997-2017 Free Software Foundation, Inc.
Contributed by Apple Computer, Inc.
#include "objfiles.h"
#include "gdbcmd.h"
#include "regcache.h"
-#include "gdb_assert.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
#include "gdbarch.h"
#include "arch-utils.h"
#include "gdbcore.h"
+#include "x86-nat.h"
#include "darwin-nat.h"
#include "i386-darwin-tdep.h"
i386_darwin_fetch_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
- thread_t current_thread = ptid_get_tid (inferior_ptid);
+ thread_t current_thread = ptid_get_tid (regcache_get_ptid (regcache));
int fetched = 0;
struct gdbarch *gdbarch = get_regcache_arch (regcache);
if (ret != KERN_SUCCESS)
{
printf_unfiltered (_("Error calling thread_get_state for "
- "GP registers for thread 0x%ulx"),
- current_thread);
+ "GP registers for thread 0x%lx\n"),
+ (unsigned long) current_thread);
MACH_CHECK_ERROR (ret);
}
+
+ /* Some kernels don't sanitize the values. */
+ gp_regs.uts.ts64.__fs &= 0xffff;
+ gp_regs.uts.ts64.__gs &= 0xffff;
+
amd64_supply_native_gregset (regcache, &gp_regs.uts, -1);
fetched++;
}
if (ret != KERN_SUCCESS)
{
printf_unfiltered (_("Error calling thread_get_state for "
- "float registers for thread 0x%ulx"),
- current_thread);
+ "float registers for thread 0x%lx\n"),
+ (unsigned long) current_thread);
MACH_CHECK_ERROR (ret);
}
amd64_supply_fxsave (regcache, -1, &fp_regs.ufs.fs64.__fpu_fcw);
{
if (regno == -1 || regno < I386_NUM_GREGS)
{
- i386_thread_state_t gp_regs;
- unsigned int gp_count = i386_THREAD_STATE_COUNT;
+ x86_thread_state32_t gp_regs;
+ unsigned int gp_count = x86_THREAD_STATE32_COUNT;
kern_return_t ret;
int i;
ret = thread_get_state
- (current_thread, i386_THREAD_STATE, (thread_state_t) & gp_regs,
+ (current_thread, x86_THREAD_STATE32, (thread_state_t) &gp_regs,
&gp_count);
if (ret != KERN_SUCCESS)
{
printf_unfiltered (_("Error calling thread_get_state for "
- "GP registers for thread 0x%ulx"),
- current_thread);
+ "GP registers for thread 0x%lx\n"),
+ (unsigned long) current_thread);
MACH_CHECK_ERROR (ret);
}
for (i = 0; i < I386_NUM_GREGS; i++)
if (regno == -1
|| (regno >= I386_ST0_REGNUM && regno < I386_SSE_NUM_REGS))
{
- i386_float_state_t fp_regs;
- unsigned int fp_count = i386_FLOAT_STATE_COUNT;
+ x86_float_state32_t fp_regs;
+ unsigned int fp_count = x86_FLOAT_STATE32_COUNT;
kern_return_t ret;
ret = thread_get_state
- (current_thread, i386_FLOAT_STATE, (thread_state_t) & fp_regs,
+ (current_thread, x86_FLOAT_STATE32, (thread_state_t) &fp_regs,
&fp_count);
if (ret != KERN_SUCCESS)
{
printf_unfiltered (_("Error calling thread_get_state for "
- "float registers for thread 0x%ulx"),
- current_thread);
+ "float registers for thread 0x%lx\n"),
+ (unsigned long) current_thread);
MACH_CHECK_ERROR (ret);
}
i387_supply_fxsave (regcache, -1, &fp_regs.__fpu_fcw);
i386_darwin_store_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
- thread_t current_thread = ptid_get_tid (inferior_ptid);
+ thread_t current_thread = ptid_get_tid (regcache_get_ptid (regcache));
struct gdbarch *gdbarch = get_regcache_arch (regcache);
#ifdef BFD64
amd64_collect_native_gregset (regcache, &gp_regs.uts, regno);
+ /* Some kernels don't sanitize the values. */
+ gp_regs.uts.ts64.__fs &= 0xffff;
+ gp_regs.uts.ts64.__gs &= 0xffff;
+
ret = thread_set_state (current_thread, x86_THREAD_STATE,
(thread_state_t) &gp_regs,
x86_THREAD_STATE_COUNT);
{
if (regno == -1 || regno < I386_NUM_GREGS)
{
- i386_thread_state_t gp_regs;
+ x86_thread_state32_t gp_regs;
kern_return_t ret;
- unsigned int gp_count = i386_THREAD_STATE_COUNT;
+ unsigned int gp_count = x86_THREAD_STATE32_COUNT;
int i;
ret = thread_get_state
- (current_thread, i386_THREAD_STATE, (thread_state_t) & gp_regs,
+ (current_thread, x86_THREAD_STATE32, (thread_state_t) &gp_regs,
&gp_count);
MACH_CHECK_ERROR (ret);
(regcache, i,
(char *)&gp_regs + i386_darwin_thread_state_reg_offset[i]);
- ret = thread_set_state (current_thread, i386_THREAD_STATE,
- (thread_state_t) & gp_regs,
- i386_THREAD_STATE_COUNT);
+ ret = thread_set_state (current_thread, x86_THREAD_STATE32,
+ (thread_state_t) &gp_regs,
+ x86_THREAD_STATE32_COUNT);
MACH_CHECK_ERROR (ret);
}
if (regno == -1
|| (regno >= I386_ST0_REGNUM && regno < I386_SSE_NUM_REGS))
{
- i386_float_state_t fp_regs;
- unsigned int fp_count = i386_FLOAT_STATE_COUNT;
+ x86_float_state32_t fp_regs;
+ unsigned int fp_count = x86_FLOAT_STATE32_COUNT;
kern_return_t ret;
ret = thread_get_state
- (current_thread, i386_FLOAT_STATE, (thread_state_t) & fp_regs,
+ (current_thread, x86_FLOAT_STATE32, (thread_state_t) & fp_regs,
&fp_count);
MACH_CHECK_ERROR (ret);
i387_collect_fxsave (regcache, regno, &fp_regs.__fpu_fcw);
- ret = thread_set_state (current_thread, i386_FLOAT_STATE,
- (thread_state_t) & fp_regs,
- i386_FLOAT_STATE_COUNT);
+ ret = thread_set_state (current_thread, x86_FLOAT_STATE32,
+ (thread_state_t) &fp_regs,
+ x86_FLOAT_STATE32_COUNT);
MACH_CHECK_ERROR (ret);
}
}
}
-
/* Support for debug registers, boosted mostly from i386-linux-nat.c. */
static void
-i386_darwin_dr_set (int regnum, uint32_t value)
+i386_darwin_dr_set (int regnum, CORE_ADDR value)
{
int current_pid;
thread_t current_thread;
x86_debug_state_t dr_regs;
kern_return_t ret;
- unsigned int dr_count = x86_DEBUG_STATE_COUNT;
+ unsigned int dr_count;
gdb_assert (regnum >= 0 && regnum <= DR_CONTROL);
current_thread = ptid_get_tid (inferior_ptid);
- dr_regs.dsh.flavor = x86_DEBUG_STATE32;
- dr_regs.dsh.count = x86_DEBUG_STATE32_COUNT;
+ dr_regs.dsh.flavor = x86_DEBUG_STATE;
+ dr_regs.dsh.count = x86_DEBUG_STATE_COUNT;
dr_count = x86_DEBUG_STATE_COUNT;
- ret = thread_get_state (current_thread, x86_DEBUG_STATE,
+ ret = thread_get_state (current_thread, x86_DEBUG_STATE,
(thread_state_t) &dr_regs, &dr_count);
+ MACH_CHECK_ERROR (ret);
- if (ret != KERN_SUCCESS)
+ switch (dr_regs.dsh.flavor)
{
- printf_unfiltered (_("Error reading debug registers "
- "thread 0x%x via thread_get_state\n"),
- (int) current_thread);
- MACH_CHECK_ERROR (ret);
- }
-
- switch (regnum)
- {
- case 0:
- dr_regs.uds.ds32.__dr0 = value;
- break;
- case 1:
- dr_regs.uds.ds32.__dr1 = value;
- break;
- case 2:
- dr_regs.uds.ds32.__dr2 = value;
- break;
- case 3:
- dr_regs.uds.ds32.__dr3 = value;
- break;
- case 4:
- dr_regs.uds.ds32.__dr4 = value;
- break;
- case 5:
- dr_regs.uds.ds32.__dr5 = value;
- break;
- case 6:
- dr_regs.uds.ds32.__dr6 = value;
- break;
- case 7:
- dr_regs.uds.ds32.__dr7 = value;
- break;
+ case x86_DEBUG_STATE32:
+ switch (regnum)
+ {
+ case 0:
+ dr_regs.uds.ds32.__dr0 = value;
+ break;
+ case 1:
+ dr_regs.uds.ds32.__dr1 = value;
+ break;
+ case 2:
+ dr_regs.uds.ds32.__dr2 = value;
+ break;
+ case 3:
+ dr_regs.uds.ds32.__dr3 = value;
+ break;
+ case 4:
+ dr_regs.uds.ds32.__dr4 = value;
+ break;
+ case 5:
+ dr_regs.uds.ds32.__dr5 = value;
+ break;
+ case 6:
+ dr_regs.uds.ds32.__dr6 = value;
+ break;
+ case 7:
+ dr_regs.uds.ds32.__dr7 = value;
+ break;
+ }
+ break;
+#ifdef BFD64
+ case x86_DEBUG_STATE64:
+ switch (regnum)
+ {
+ case 0:
+ dr_regs.uds.ds64.__dr0 = value;
+ break;
+ case 1:
+ dr_regs.uds.ds64.__dr1 = value;
+ break;
+ case 2:
+ dr_regs.uds.ds64.__dr2 = value;
+ break;
+ case 3:
+ dr_regs.uds.ds64.__dr3 = value;
+ break;
+ case 4:
+ dr_regs.uds.ds64.__dr4 = value;
+ break;
+ case 5:
+ dr_regs.uds.ds64.__dr5 = value;
+ break;
+ case 6:
+ dr_regs.uds.ds64.__dr6 = value;
+ break;
+ case 7:
+ dr_regs.uds.ds64.__dr7 = value;
+ break;
+ }
+ break;
+#endif
}
- ret = thread_set_state (current_thread, x86_DEBUG_STATE,
- (thread_state_t) &dr_regs, dr_count);
+ ret = thread_set_state (current_thread, dr_regs.dsh.flavor,
+ (thread_state_t) &dr_regs.uds, dr_count);
- if (ret != KERN_SUCCESS)
- {
- printf_unfiltered (_("Error writing debug registers "
- "thread 0x%x via thread_get_state\n"),
- (int) current_thread);
- MACH_CHECK_ERROR (ret);
- }
+ MACH_CHECK_ERROR (ret);
}
-static uint32_t
+static CORE_ADDR
i386_darwin_dr_get (int regnum)
{
thread_t current_thread;
x86_debug_state_t dr_regs;
kern_return_t ret;
- unsigned int dr_count = x86_DEBUG_STATE_COUNT;
+ unsigned int dr_count;
gdb_assert (regnum >= 0 && regnum <= DR_CONTROL);
current_thread = ptid_get_tid (inferior_ptid);
- dr_regs.dsh.flavor = x86_DEBUG_STATE32;
- dr_regs.dsh.count = x86_DEBUG_STATE32_COUNT;
+ dr_regs.dsh.flavor = x86_DEBUG_STATE;
+ dr_regs.dsh.count = x86_DEBUG_STATE_COUNT;
dr_count = x86_DEBUG_STATE_COUNT;
- ret = thread_get_state (current_thread, x86_DEBUG_STATE,
+ ret = thread_get_state (current_thread, x86_DEBUG_STATE,
(thread_state_t) &dr_regs, &dr_count);
+ MACH_CHECK_ERROR (ret);
- if (ret != KERN_SUCCESS)
+ switch (dr_regs.dsh.flavor)
{
- printf_unfiltered (_("Error reading debug registers "
- "thread 0x%x via thread_get_state\n"),
- (int) current_thread);
- MACH_CHECK_ERROR (ret);
- }
-
- switch (regnum)
- {
- case 0:
- return dr_regs.uds.ds32.__dr0;
- case 1:
- return dr_regs.uds.ds32.__dr1;
- case 2:
- return dr_regs.uds.ds32.__dr2;
- case 3:
- return dr_regs.uds.ds32.__dr3;
- case 4:
- return dr_regs.uds.ds32.__dr4;
- case 5:
- return dr_regs.uds.ds32.__dr5;
- case 6:
- return dr_regs.uds.ds32.__dr6;
- case 7:
- return dr_regs.uds.ds32.__dr7;
- default:
- return -1;
+ case x86_DEBUG_STATE32:
+ switch (regnum)
+ {
+ case 0:
+ return dr_regs.uds.ds32.__dr0;
+ case 1:
+ return dr_regs.uds.ds32.__dr1;
+ case 2:
+ return dr_regs.uds.ds32.__dr2;
+ case 3:
+ return dr_regs.uds.ds32.__dr3;
+ case 4:
+ return dr_regs.uds.ds32.__dr4;
+ case 5:
+ return dr_regs.uds.ds32.__dr5;
+ case 6:
+ return dr_regs.uds.ds32.__dr6;
+ case 7:
+ return dr_regs.uds.ds32.__dr7;
+ default:
+ return -1;
+ }
+ break;
+#ifdef BFD64
+ case x86_DEBUG_STATE64:
+ switch (regnum)
+ {
+ case 0:
+ return dr_regs.uds.ds64.__dr0;
+ case 1:
+ return dr_regs.uds.ds64.__dr1;
+ case 2:
+ return dr_regs.uds.ds64.__dr2;
+ case 3:
+ return dr_regs.uds.ds64.__dr3;
+ case 4:
+ return dr_regs.uds.ds64.__dr4;
+ case 5:
+ return dr_regs.uds.ds64.__dr5;
+ case 6:
+ return dr_regs.uds.ds64.__dr6;
+ case 7:
+ return dr_regs.uds.ds64.__dr7;
+ default:
+ return -1;
+ }
+ break;
+#endif
+ default:
+ return -1;
}
}
-void
+static void
i386_darwin_dr_set_control (unsigned long control)
{
i386_darwin_dr_set (DR_CONTROL, control);
}
-void
+static void
i386_darwin_dr_set_addr (int regnum, CORE_ADDR addr)
{
gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR);
i386_darwin_dr_set (DR_FIRSTADDR + regnum, addr);
}
-CORE_ADDR
+static CORE_ADDR
i386_darwin_dr_get_addr (int regnum)
{
return i386_darwin_dr_get (regnum);
}
-unsigned long
+static unsigned long
i386_darwin_dr_get_status (void)
{
return i386_darwin_dr_get (DR_STATUS);
}
-unsigned long
+static unsigned long
i386_darwin_dr_get_control (void)
{
return i386_darwin_dr_get (DR_CONTROL);
void
darwin_check_osabi (darwin_inferior *inf, thread_t thread)
{
- if (gdbarch_osabi (target_gdbarch) == GDB_OSABI_UNKNOWN)
+ if (gdbarch_osabi (target_gdbarch ()) == GDB_OSABI_UNKNOWN)
{
/* Attaching to a process. Let's figure out what kind it is. */
x86_thread_state_t gp_regs;
gdbarch_info_init (&info);
gdbarch_info_fill (&info);
- info.byte_order = gdbarch_byte_order (target_gdbarch);
+ info.byte_order = gdbarch_byte_order (target_gdbarch ());
info.osabi = GDB_OSABI_DARWIN;
if (gp_regs.tsh.flavor == x86_THREAD_STATE64)
info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386,
bfd_mach_x86_64);
else
- info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386,
+ info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386,
bfd_mach_i386_i386);
gdbarch_update_p (info);
}
static int
i386_darwin_sstep_at_sigreturn (x86_thread_state_t *regs)
{
- enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
static const gdb_byte darwin_syscall[] = { 0xcd, 0x80 }; /* int 0x80 */
gdb_byte buf[sizeof (darwin_syscall)];
static int
amd64_darwin_sstep_at_sigreturn (x86_thread_state_t *regs)
{
- enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
static const gdb_byte darwin_syscall[] = { 0x0f, 0x05 }; /* syscall */
gdb_byte buf[sizeof (darwin_syscall)];
case x86_THREAD_STATE32:
{
__uint32_t bit = enable ? X86_EFLAGS_T : 0;
-
+
if (enable && i386_darwin_sstep_at_sigreturn (®s))
return;
if ((regs.uts.ts32.__eflags & X86_EFLAGS_T) == bit)
return;
regs.uts.ts32.__eflags
= (regs.uts.ts32.__eflags & ~X86_EFLAGS_T) | bit;
- kret = thread_set_state (thread, x86_THREAD_STATE,
+ kret = thread_set_state (thread, x86_THREAD_STATE,
(thread_state_t) ®s, count);
MACH_CHECK_ERROR (kret);
}
return;
regs.uts.ts64.__rflags
= (regs.uts.ts64.__rflags & ~X86_EFLAGS_T) | bit;
- kret = thread_set_state (thread, x86_THREAD_STATE,
+ kret = thread_set_state (thread, x86_THREAD_STATE,
(thread_state_t) ®s, count);
MACH_CHECK_ERROR (kret);
}
amd64_native_gregset32_num_regs = i386_darwin_thread_state_num_regs;
#endif
+ x86_use_watchpoints (target);
+
+ x86_dr_low.set_control = i386_darwin_dr_set_control;
+ x86_dr_low.set_addr = i386_darwin_dr_set_addr;
+ x86_dr_low.get_addr = i386_darwin_dr_get_addr;
+ x86_dr_low.get_status = i386_darwin_dr_get_status;
+ x86_dr_low.get_control = i386_darwin_dr_get_control;
+
+ /* Let's assume that the kernel is 64 bits iff the executable is. */
+#ifdef __x86_64__
+ x86_set_debug_register_length (8);
+#else
+ x86_set_debug_register_length (4);
+#endif
+
target->to_fetch_registers = i386_darwin_fetch_inferior_registers;
target->to_store_registers = i386_darwin_store_inferior_registers;
}