Add meta-xilinx subtree
Import git://git.yoctoproject.org/meta-xilinx from 5fccc46503 as
meta-xilinx subtree.
Change-Id: I3d59bcf3a57cee588aab7f5cdd0287af66450c8a
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gdb/files/0009-Patch-microblaze-Initial-support-for-native-gdb.patch b/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gdb/files/0009-Patch-microblaze-Initial-support-for-native-gdb.patch
new file mode 100644
index 0000000..1ad6b89
--- /dev/null
+++ b/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gdb/files/0009-Patch-microblaze-Initial-support-for-native-gdb.patch
@@ -0,0 +1,495 @@
+From c7b918283f2e438deef78aae84f6b748a7a1bb54 Mon Sep 17 00:00:00 2001
+From: David Holsgrove <david.holsgrove@petalogix.com>
+Date: Fri, 20 Jul 2012 15:18:35 +1000
+Subject: [PATCH 09/16] [Patch, microblaze]: Initial support for native gdb
+
+microblaze: Follow PPC method of getting setting registers
+using PTRACE PEEK/POKE
+
+Signed-off-by: David Holsgrove <david.holsgrove@petalogix.com>
+Upstream-Status: Pending
+---
+ gdb/Makefile.in | 4 +-
+ gdb/config/microblaze/linux.mh | 10 +
+ gdb/microblaze-linux-nat.c | 431 +++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 443 insertions(+), 2 deletions(-)
+ create mode 100644 gdb/config/microblaze/linux.mh
+ create mode 100644 gdb/microblaze-linux-nat.c
+
+diff --git a/gdb/Makefile.in b/gdb/Makefile.in
+index f2c16ec..12870a4 100644
+--- a/gdb/Makefile.in
++++ b/gdb/Makefile.in
+@@ -904,7 +904,7 @@ top.h bsd-kvm.h gdb-stabs.h reggroups.h \
+ annotate.h sim-regno.h dictionary.h dfp.h main.h frame-unwind.h \
+ remote-fileio.h i386-linux-tdep.h vax-tdep.h objc-lang.h \
+ sentinel-frame.h bcache.h symfile.h windows-tdep.h linux-tdep.h \
+-gdb_usleep.h jit.h xml-syscall.h microblaze-tdep.h \
++gdb_usleep.h jit.h xml-syscall.h microblaze-tdep.h microblaze-linux-tdep.h \
+ psymtab.h psympriv.h progspace.h bfin-tdep.h ia64-hpux-tdep.h \
+ amd64-darwin-tdep.h charset-list.h \
+ config/djgpp/langinfo.h config/djgpp/nl_types.h darwin-nat.h \
+@@ -1631,7 +1631,7 @@ ALLDEPFILES = \
+ m68kbsd-nat.c m68kbsd-tdep.c \
+ m68klinux-nat.c m68klinux-tdep.c \
+ m88k-tdep.c m88kbsd-nat.c \
+- microblaze-tdep.c microblaze-linux-tdep.c \
++ microblaze-tdep.c microblaze-linux-nat.c microblaze-linux-tdep.c \
+ mingw-hdep.c \
+ mips-linux-nat.c mips-linux-tdep.c \
+ mips-irix-tdep.c \
+diff --git a/gdb/config/microblaze/linux.mh b/gdb/config/microblaze/linux.mh
+new file mode 100644
+index 0000000..547d103
+--- /dev/null
++++ b/gdb/config/microblaze/linux.mh
+@@ -0,0 +1,10 @@
++# Host: Microblaze, running Linux
++
++NAT_FILE= config/nm-linux.h
++NATDEPFILES= inf-ptrace.o fork-child.o \
++ microblaze-linux-nat.o proc-service.o linux-thread-db.o \
++ linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o \
++ linux-waitpid.o
++NAT_CDEPS = $(srcdir)/proc-service.list
++
++LOADLIBES = -ldl $(RDYNAMIC)
+diff --git a/gdb/microblaze-linux-nat.c b/gdb/microblaze-linux-nat.c
+new file mode 100644
+index 0000000..81f8346
+--- /dev/null
++++ b/gdb/microblaze-linux-nat.c
+@@ -0,0 +1,431 @@
++/* Microblaze GNU/Linux native support.
++
++ Copyright (C) 1988-1989, 1991-1992, 1994, 1996, 2000-2012 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 "dis-asm.h"
++#include "frame.h"
++#include "trad-frame.h"
++#include "symtab.h"
++#include "value.h"
++#include "gdbcmd.h"
++#include "breakpoint.h"
++#include "inferior.h"
++#include "regcache.h"
++#include "target.h"
++#include "frame.h"
++#include "frame-base.h"
++#include "frame-unwind.h"
++#include "dwarf2-frame.h"
++#include "osabi.h"
++
++#include "gdb_assert.h"
++#include <string.h>
++#include "target-descriptions.h"
++#include "opcodes/microblaze-opcm.h"
++#include "opcodes/microblaze-dis.h"
++
++#include "linux-nat.h"
++#include "target-descriptions.h"
++
++#include <sys/user.h>
++#include <sys/utsname.h>
++#include <sys/procfs.h>
++#include <sys/ptrace.h>
++
++/* Prototypes for supply_gregset etc. */
++#include "gregset.h"
++
++#include "microblaze-tdep.h"
++
++#include <elf/common.h>
++#include "auxv.h"
++
++/* Defines ps_err_e, struct ps_prochandle. */
++#include "gdb_proc_service.h"
++
++/* On GNU/Linux, threads are implemented as pseudo-processes, in which
++ case we may be tracing more than one process at a time. In that
++ case, inferior_ptid will contain the main process ID and the
++ individual thread (process) ID. get_thread_id () is used to get
++ the thread id if it's available, and the process id otherwise. */
++
++int
++get_thread_id (ptid_t ptid)
++{
++ int tid = ptid_get_lwp (ptid);
++ if (0 == tid)
++ tid = ptid_get_pid (ptid);
++ return tid;
++}
++
++#define GET_THREAD_ID(PTID) get_thread_id (PTID)
++
++/* Non-zero if our kernel may support the PTRACE_GETREGS and
++ PTRACE_SETREGS requests, for reading and writing the
++ general-purpose registers. Zero if we've tried one of
++ them and gotten an error. */
++int have_ptrace_getsetregs = 1;
++
++static int
++microblaze_register_u_addr (struct gdbarch *gdbarch, int regno)
++{
++ int u_addr = -1;
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++ /* NOTE: cagney/2003-11-25: This is the word size used by the ptrace
++ interface, and not the wordsize of the program's ABI. */
++ int wordsize = sizeof (long);
++
++ /* General purpose registers occupy 1 slot each in the buffer. */
++ if (regno >= MICROBLAZE_R0_REGNUM
++ && regno <= MICROBLAZE_FSR_REGNUM)
++ u_addr = (regno * wordsize);
++
++ return u_addr;
++}
++
++
++static void
++fetch_register (struct regcache *regcache, int tid, int regno)
++{
++ struct gdbarch *gdbarch = get_regcache_arch (regcache);
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++ /* This isn't really an address. But ptrace thinks of it as one. */
++ CORE_ADDR regaddr = microblaze_register_u_addr (gdbarch, regno);
++ int bytes_transferred;
++ unsigned int offset; /* Offset of registers within the u area. */
++ char buf[MAX_REGISTER_SIZE];
++
++ if (regaddr == -1)
++ {
++ memset (buf, '\0', register_size (gdbarch, regno)); /* Supply zeroes */
++ regcache_raw_supply (regcache, regno, buf);
++ return;
++ }
++
++ /* Read the raw register using sizeof(long) sized chunks. On a
++ 32-bit platform, 64-bit floating-point registers will require two
++ transfers. */
++ for (bytes_transferred = 0;
++ bytes_transferred < register_size (gdbarch, regno);
++ bytes_transferred += sizeof (long))
++ {
++ long l;
++
++ errno = 0;
++ l = ptrace (PTRACE_PEEKUSER, tid, (PTRACE_TYPE_ARG3) regaddr, 0);
++ regaddr += sizeof (long);
++ if (errno != 0)
++ {
++ char message[128];
++ sprintf (message, "reading register %s (#%d)",
++ gdbarch_register_name (gdbarch, regno), regno);
++ perror_with_name (message);
++ }
++ memcpy (&buf[bytes_transferred], &l, sizeof (l));
++ }
++
++ /* Now supply the register. Keep in mind that the regcache's idea
++ of the register's size may not be a multiple of sizeof
++ (long). */
++ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
++ {
++ /* Little-endian values are always found at the left end of the
++ bytes transferred. */
++ regcache_raw_supply (regcache, regno, buf);
++ }
++ else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
++ {
++ /* Big-endian values are found at the right end of the bytes
++ transferred. */
++ size_t padding = (bytes_transferred - register_size (gdbarch, regno));
++ regcache_raw_supply (regcache, regno, buf + padding);
++ }
++ else
++ internal_error (__FILE__, __LINE__,
++ _("fetch_register: unexpected byte order: %d"),
++ gdbarch_byte_order (gdbarch));
++}
++
++/* This function actually issues the request to ptrace, telling
++ it to get all general-purpose registers and put them into the
++ specified regset.
++
++ If the ptrace request does not exist, this function returns 0
++ and properly sets the have_ptrace_* flag. If the request fails,
++ this function calls perror_with_name. Otherwise, if the request
++ succeeds, then the regcache gets filled and 1 is returned. */
++static int
++fetch_all_gp_regs (struct regcache *regcache, int tid)
++{
++ struct gdbarch *gdbarch = get_regcache_arch (regcache);
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++ gdb_gregset_t gregset;
++
++ if (ptrace (PTRACE_GETREGS, tid, 0, (void *) &gregset) < 0)
++ {
++ if (errno == EIO)
++ {
++ have_ptrace_getsetregs = 0;
++ return 0;
++ }
++ perror_with_name (_("Couldn't get general-purpose registers."));
++ }
++
++ supply_gregset (regcache, (const gdb_gregset_t *) &gregset);
++
++ return 1;
++}
++
++
++/* This is a wrapper for the fetch_all_gp_regs function. It is
++ responsible for verifying if this target has the ptrace request
++ that can be used to fetch all general-purpose registers at one
++ shot. If it doesn't, then we should fetch them using the
++ old-fashioned way, which is to iterate over the registers and
++ request them one by one. */
++static void
++fetch_gp_regs (struct regcache *regcache, int tid)
++{
++ struct gdbarch *gdbarch = get_regcache_arch (regcache);
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++ int i;
++
++ if (have_ptrace_getsetregs)
++ if (fetch_all_gp_regs (regcache, tid))
++ return;
++
++ /* If we've hit this point, it doesn't really matter which
++ architecture we are using. We just need to read the
++ registers in the "old-fashioned way". */
++ for (i = MICROBLAZE_R0_REGNUM; i <= MICROBLAZE_FSR_REGNUM; i++)
++ fetch_register (regcache, tid, i);
++}
++
++
++static void
++store_register (const struct regcache *regcache, int tid, int regno)
++{
++ struct gdbarch *gdbarch = get_regcache_arch (regcache);
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++ /* This isn't really an address. But ptrace thinks of it as one. */
++ CORE_ADDR regaddr = microblaze_register_u_addr (gdbarch, regno);
++ int i;
++ size_t bytes_to_transfer;
++ char buf[MAX_REGISTER_SIZE];
++
++ if (regaddr == -1)
++ return;
++
++ /* First collect the register. Keep in mind that the regcache's
++ idea of the register's size may not be a multiple of sizeof
++ (long). */
++ memset (buf, 0, sizeof buf);
++ bytes_to_transfer = align_up (register_size (gdbarch, regno), sizeof (long));
++ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
++ {
++ /* Little-endian values always sit at the left end of the buffer. */
++ regcache_raw_collect (regcache, regno, buf);
++ }
++ else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
++ {
++ /* Big-endian values sit at the right end of the buffer. */
++ size_t padding = (bytes_to_transfer - register_size (gdbarch, regno));
++ regcache_raw_collect (regcache, regno, buf + padding);
++ }
++
++ for (i = 0; i < bytes_to_transfer; i += sizeof (long))
++ {
++ long l;
++
++ memcpy (&l, &buf[i], sizeof (l));
++ errno = 0;
++ ptrace (PTRACE_POKEUSER, tid, (PTRACE_TYPE_ARG3) regaddr, l);
++ regaddr += sizeof (long);
++
++ if (errno != 0)
++ {
++ char message[128];
++ sprintf (message, "writing register %s (#%d)",
++ gdbarch_register_name (gdbarch, regno), regno);
++ perror_with_name (message);
++ }
++ }
++}
++
++/* This function actually issues the request to ptrace, telling
++ it to store all general-purpose registers present in the specified
++ regset.
++
++ If the ptrace request does not exist, this function returns 0
++ and properly sets the have_ptrace_* flag. If the request fails,
++ this function calls perror_with_name. Otherwise, if the request
++ succeeds, then the regcache is stored and 1 is returned. */
++static int
++store_all_gp_regs (const struct regcache *regcache, int tid, int regno)
++{
++ struct gdbarch *gdbarch = get_regcache_arch (regcache);
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++ gdb_gregset_t gregset;
++
++ if (ptrace (PTRACE_GETREGS, tid, 0, (void *) &gregset) < 0)
++ {
++ if (errno == EIO)
++ {
++ have_ptrace_getsetregs = 0;
++ return 0;
++ }
++ perror_with_name (_("Couldn't get general-purpose registers."));
++ }
++
++ fill_gregset (regcache, &gregset, regno);
++
++ if (ptrace (PTRACE_SETREGS, tid, 0, (void *) &gregset) < 0)
++ {
++ if (errno == EIO)
++ {
++ have_ptrace_getsetregs = 0;
++ return 0;
++ }
++ perror_with_name (_("Couldn't set general-purpose registers."));
++ }
++
++ return 1;
++}
++
++/* This is a wrapper for the store_all_gp_regs function. It is
++ responsible for verifying if this target has the ptrace request
++ that can be used to store all general-purpose registers at one
++ shot. If it doesn't, then we should store them using the
++ old-fashioned way, which is to iterate over the registers and
++ store them one by one. */
++static void
++store_gp_regs (const struct regcache *regcache, int tid, int regno)
++{
++ struct gdbarch *gdbarch = get_regcache_arch (regcache);
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++ int i;
++
++ if (have_ptrace_getsetregs)
++ if (store_all_gp_regs (regcache, tid, regno))
++ return;
++
++ /* If we hit this point, it doesn't really matter which
++ architecture we are using. We just need to store the
++ registers in the "old-fashioned way". */
++ for (i = MICROBLAZE_R0_REGNUM; i <= MICROBLAZE_FSR_REGNUM; i++)
++ store_register (regcache, tid, i);
++}
++
++
++/* Fetch registers from the child process. Fetch all registers if
++ regno == -1, otherwise fetch all general registers or all floating
++ point registers depending upon the value of regno. */
++
++static void
++microblaze_linux_fetch_inferior_registers (struct target_ops *ops,
++ struct regcache *regcache, int regno)
++{
++ /* Get the thread id for the ptrace call. */
++ int tid = GET_THREAD_ID (inferior_ptid);
++
++ if (regno == -1)
++ fetch_gp_regs (regcache, tid);
++ else
++ fetch_register (regcache, tid, regno);
++}
++
++/* Store registers back into the inferior. Store all registers if
++ regno == -1, otherwise store all general registers or all floating
++ point registers depending upon the value of regno. */
++
++static void
++microblaze_linux_store_inferior_registers (struct target_ops *ops,
++ struct regcache *regcache, int regno)
++{
++ /* Get the thread id for the ptrace call. */
++ int tid = GET_THREAD_ID (inferior_ptid);
++
++ if (regno >= 0)
++ store_register (regcache, tid, regno);
++ else
++ store_gp_regs (regcache, tid, -1);
++}
++
++/* Wrapper functions for the standard regset handling, used by
++ thread debugging. */
++
++void
++fill_gregset (const struct regcache *regcache,
++ gdb_gregset_t *gregsetp, int regno)
++{
++ microblaze_collect_gregset (NULL, regcache, regno, gregsetp);
++}
++
++void
++supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
++{
++ microblaze_supply_gregset (NULL, regcache, -1, gregsetp);
++}
++
++void
++fill_fpregset (const struct regcache *regcache,
++ gdb_fpregset_t *fpregsetp, int regno)
++{
++ /* FIXME. */
++}
++
++void
++supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
++{
++ /* FIXME. */
++}
++
++static const struct target_desc *
++microblaze_linux_read_description (struct target_ops *ops)
++{
++ CORE_ADDR microblaze_hwcap = 0;
++
++ if (target_auxv_search (ops, AT_HWCAP, µblaze_hwcap) != 1)
++ return NULL;
++
++ return NULL;
++}
++
++
++void _initialize_microblaze_linux_nat (void);
++
++void
++_initialize_microblaze_linux_nat (void)
++{
++ struct target_ops *t;
++
++ /* Fill in the generic GNU/Linux methods. */
++ t = linux_target ();
++
++ /* Add our register access methods. */
++ t->to_fetch_registers = microblaze_linux_fetch_inferior_registers;
++ t->to_store_registers = microblaze_linux_store_inferior_registers;
++
++ t->to_read_description = microblaze_linux_read_description;
++
++ /* Register the target. */
++ linux_nat_add_target (t);
++}
+--
+1.9.0