path: root/devel/gdb/files/patch-armfbsd

diff --git gdb/armfbsd-nat.c gdb/armfbsd-nat.c
new file mode 100644
index 0000000..b883411
--- /dev/null
+++ gdb/armfbsd-nat.c
@@ -0,0 +1,215 @@
+/* Native-dependent code for BSD Unix running on ARM's, for GDB.
+
+   Copyright (C) 1988-2015 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "gdbcore.h"
+#include "inferior.h"
+#include "regcache.h"
+#include "target.h"
+#include "gregset.h"
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+#include <machine/frame.h>
+
+#include "fbsd-nat.h"
+#include "arm-tdep.h"
+#include "inf-ptrace.h"
+
+extern int arm_apcs_32;
+
+static pid_t
+ptrace_pid (ptid_t ptid)
+{
+  pid_t pid;
+
+#ifdef __FreeBSD__
+  pid = ptid_get_lwp (ptid);
+  if (pid == 0)
+#endif
+    pid = ptid_get_pid (ptid);
+  return pid;
+}
+
+static void
+arm_supply_gregset (struct regcache *regcache, const gregset_t *gregset, int regnum)
+{
+  int r;
+  CORE_ADDR r_pc;
+
+  /* Integer registers.  */
+  for (r = ARM_A1_REGNUM; r < ARM_SP_REGNUM; r++)
+    if ((r == regnum) || (regnum == -1))
+      regcache_raw_supply (regcache, r, (char *) &gregset->r[r]);
+
+  if ((regnum == ARM_SP_REGNUM) || (regnum == -1))
+    regcache_raw_supply (regcache, ARM_SP_REGNUM,
+		       (char *) &gregset->r_sp);
+  if ((regnum == ARM_LR_REGNUM) || (regnum == -1))
+    regcache_raw_supply (regcache, ARM_LR_REGNUM,
+		       (char *) &gregset->r_lr);
+  /* This is ok: we're running native...  */
+  if ((regnum == ARM_PC_REGNUM) || (regnum == -1))
+    {
+      r_pc = gdbarch_addr_bits_remove (get_regcache_arch (regcache), gregset->r_pc);
+      regcache_raw_supply (regcache, ARM_PC_REGNUM, (char *) &r_pc);
+    }
+
+  if ((regnum == ARM_PS_REGNUM) || (regnum == -1))
+    {
+      if (arm_apcs_32)
+        regcache_raw_supply (regcache, ARM_PS_REGNUM,
+			 (char *) &gregset->r_cpsr);
+      else
+        regcache_raw_supply (regcache, ARM_PS_REGNUM,
+			 (char *) &gregset->r_pc);
+    }
+}
+
+static void
+armbsd_collect_gregset (const struct regcache *regcache, gregset_t *gregset, int regnum)
+{
+  int ret;
+  int r;
+
+  for (r = ARM_A1_REGNUM; r < ARM_SP_REGNUM; r++)
+    if ((regnum == r) || (regnum == -1))
+      regcache_raw_collect (regcache, r,
+			  (char *) &gregset->r[r]);
+
+  if ((regnum == ARM_SP_REGNUM) || (regnum == -1))
+    regcache_raw_collect (regcache, ARM_SP_REGNUM,
+			(char *) &gregset->r_sp);
+  if ((regnum == ARM_LR_REGNUM) || (regnum == -1))
+    regcache_raw_collect (regcache, ARM_LR_REGNUM,
+			(char *) &gregset->r_lr);
+
+
+  if ((regnum == ARM_PC_REGNUM) || (regnum == -1))
+    regcache_raw_collect (regcache, ARM_PC_REGNUM,
+			(char *) &gregset->r_pc);
+  if ((regnum == ARM_PS_REGNUM) || (regnum == -1))
+    {
+      if (arm_apcs_32)
+        {
+          regcache_raw_collect (regcache, ARM_PS_REGNUM,
+			    (char *) &gregset->r_cpsr);
+        }
+      else
+        {
+          unsigned psr_val;
+
+          regcache_raw_collect (regcache, ARM_PS_REGNUM,
+			   (char *) &psr_val);
+
+          psr_val ^= gdbarch_addr_bits_remove (get_regcache_arch (regcache), psr_val);
+          gregset->r_pc = gdbarch_addr_bits_remove
+    			   (get_regcache_arch (regcache), gregset->r_pc);
+          gregset->r_pc |= psr_val;
+        }
+    }
+}
+
+/* Fill GDB's register array with the general-purpose register values
+   in *GREGSETP.  */
+
+void
+supply_gregset (struct regcache *regcache, const gregset_t *gregsetp)
+{
+  arm_supply_gregset (regcache, gregsetp, -1);
+}
+
+/* Fill register REGNUM (if it is a general-purpose register) in
+   *GREGSETPS with the value in GDB's register array.  If REGNUM is -1,
+   do this for all registers.  */
+
+void
+fill_gregset (const struct regcache *regcache, gdb_gregset_t *gregsetp, int regnum)
+{
+  armbsd_collect_gregset (regcache, gregsetp, regnum);
+}
+
+/* Fill GDB's register array with the floating-point register values
+   in *FPREGSETP.  */
+
+void
+supply_fpregset (struct regcache *regcache, const fpregset_t *fpregsetp)
+{
+}
+
+/* Fill register REGNUM (if it is a floating-point register) in
+   *FPREGSETP with the value in GDB's register array.  If REGNUM is -1,
+   do this for all registers.  */
+
+void
+fill_fpregset (const struct regcache *regcache, gdb_fpregset_t *fpregsetp, int regnum)
+{
+}
+
+/* Fetch register REGNO from the child process. If REGNO is -1, do it
+   for all registers.  */
+
+static void
+armfbsd_fetch_inferior_registers (struct target_ops *ops,
+				  struct regcache *regcache, int regno)
+{
+  gdb_gregset_t regs;
+
+  if (ptrace (PT_GETREGS, ptrace_pid (inferior_ptid),
+	      (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+    perror_with_name (_("Couldn't get registers"));
+
+  arm_supply_gregset (regcache, &regs, regno);
+  /* TODO: fpregs */
+}
+
+/* Store register REGNO back into the child process. If REGNO is -1,
+   do this for all registers.  */
+
+static void
+armfbsd_store_inferior_registers (struct target_ops *ops,
+				  struct regcache *regcache, int regno)
+{
+  gdb_gregset_t regs;
+
+  if (ptrace (PT_GETREGS, ptrace_pid (inferior_ptid),
+	      (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+    perror_with_name (_("Couldn't get registers"));
+
+  fill_gregset (regcache, &regs, regno);
+
+  if (ptrace (PT_SETREGS, ptrace_pid (inferior_ptid),
+	      (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+    perror_with_name (_("Couldn't write registers"));
+  /* TODO: FP regs */
+}
+
+void _initialize_armfbsd_nat (void);
+
+void
+_initialize_armfbsd_nat (void)
+{
+  struct target_ops *t;
+
+  /* Add in local overrides.  */
+  t = inf_ptrace_target ();
+  t->to_fetch_registers = armfbsd_fetch_inferior_registers;
+  t->to_store_registers = armfbsd_store_inferior_registers;
+  fbsd_nat_add_target (t);
+}
diff --git gdb/armfbsd-tdep.c gdb/armfbsd-tdep.c
new file mode 100644
index 0000000..f58c323
--- /dev/null
+++ gdb/armfbsd-tdep.c
@@ -0,0 +1,109 @@
+/* Target-dependent code for PowerPC systems running FreeBSD.
+
+   Copyright (C) 2013-2015 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "arch-utils.h"
+#include "frame.h"
+#include "gdbcore.h"
+#include "frame-unwind.h"
+#include "gdbtypes.h"
+#include "osabi.h"
+#include "regcache.h"
+#include "regset.h"
+#include "symtab.h"
+#include "target.h"
+#include "trad-frame.h"
+
+#include "arm-tdep.h"
+#include "solib-svr4.h"
+
+/* Description of the longjmp buffer.  */
+#define ARM_FBSD_JB_PC 24
+#define ARM_FBSD_JB_ELEMENT_SIZE INT_REGISTER_SIZE
+
+/* For compatibility with previous implemenations of GDB on arm/FreeBSD,
+   override the default little-endian breakpoint.  */
+static const gdb_byte arm_fbsd_arm_le_breakpoint[] = {0x11, 0x00, 0x00, 0xe6};
+static const gdb_byte arm_fbsd_arm_be_breakpoint[] = {0xe6, 0x00, 0x00, 0x11};
+static const gdb_byte arm_fbsd_thumb_le_breakpoint[] = {0xfe, 0xde};
+static const gdb_byte arm_fbsd_thumb_be_breakpoint[] = {0xde, 0xfe};
+
+static void
+arm_freebsd_init_abi_common (struct gdbarch_info info,
+			    struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  tdep->lowest_pc = 0x8000;
+  switch (info.byte_order)
+    {
+    case BFD_ENDIAN_LITTLE:
+      tdep->arm_breakpoint = arm_fbsd_arm_le_breakpoint;
+      tdep->thumb_breakpoint = arm_fbsd_thumb_le_breakpoint;
+      tdep->arm_breakpoint_size = sizeof (arm_fbsd_arm_le_breakpoint);
+      tdep->thumb_breakpoint_size = sizeof (arm_fbsd_thumb_le_breakpoint);
+      break;
+
+    case BFD_ENDIAN_BIG:
+      tdep->arm_breakpoint = arm_fbsd_arm_be_breakpoint;
+      tdep->thumb_breakpoint = arm_fbsd_thumb_be_breakpoint;
+      tdep->arm_breakpoint_size = sizeof (arm_fbsd_arm_be_breakpoint);
+      tdep->thumb_breakpoint_size = sizeof (arm_fbsd_thumb_be_breakpoint);
+      break;
+
+    default:
+      internal_error (__FILE__, __LINE__,
+		      _("arm_gdbarch_init: bad byte order for float format"));
+    }
+
+  tdep->jb_pc = ARM_FBSD_JB_PC;
+  tdep->jb_elt_size = ARM_FBSD_JB_ELEMENT_SIZE;
+
+  /* Single stepping.  */
+  set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
+}
+
+static void
+arm_freebsd_elf_init_abi (struct gdbarch_info info,
+			 struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  arm_freebsd_init_abi_common (info, gdbarch);
+  if (tdep->fp_model == ARM_FLOAT_AUTO)
+    tdep->fp_model = ARM_FLOAT_SOFT_VFP;
+
+  /* NetBSD ELF uses SVR4-style shared libraries.  */
+  set_solib_svr4_fetch_link_map_offsets
+    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
+}
+
+
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+
+void _initialize_armfbsd_tdep (void);
+
+void
+_initialize_armfbsd_tdep (void)
+{
+
+  gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_FREEBSD_ELF,
+                          arm_freebsd_elf_init_abi);
+}
diff --git gdb/config/arm/fbsd.mh gdb/config/arm/fbsd.mh
new file mode 100644
index 0000000..0a2d8b1
--- /dev/null
+++ gdb/config/arm/fbsd.mh
@@ -0,0 +1,3 @@
+# Host: FreeBSD/arm
+NATDEPFILES= armfbsd-nat.o fbsd-nat.o fork-child.o inf-ptrace.o
+HAVE_NATIVE_GCORE_HOST = 1
diff --git gdb/Makefile.in gdb/Makefile.in
index dfaa8a3..ddad28d 100644
--- gdb/Makefile.in
+++ gdb/Makefile.in
@@ -659,7 +659,7 @@
 ALL_TARGET_OBS = \
 	armbsd-tdep.o arm.o arm-linux.o arm-linux-tdep.o \
 	arm-get-next-pcs.o arm-symbian-tdep.o \
-	armnbsd-tdep.o armobsd-tdep.o \
+	armnbsd-tdep.o armobsd-tdep.o armfbsd-tdep.o \
 	arm-tdep.o arm-wince-tdep.o \
 	avr-tdep.o \
 	bfin-linux-tdep.o bfin-tdep.o \
@@ -1666,7 +1666,7 @@
 	arm.c arm-get-next-pcs.c \
 	arm-linux.c arm-linux-nat.c arm-linux-tdep.c \
 	arm-symbian-tdep.c arm-tdep.c \
-	armnbsd-nat.c armbsd-tdep.c armnbsd-tdep.c armobsd-tdep.c \
+	armnbsd-nat.c armbsd-tdep.c armnbsd-tdep.c armobsd-tdep.c armfbsd-tdep.c \
 	avr-tdep.c \
 	bfin-linux-tdep.c bfin-tdep.c \
 	bsd-uthread.c bsd-kvm.c \