meta-openembedded and poky: subtree updates
Squash of the following due to dependencies among them
and OpenBMC changes:
meta-openembedded: subtree update:d0748372d2..9201611135
meta-openembedded: subtree update:9201611135..17fd382f34
poky: subtree update:9052e5b32a..2e11d97b6c
poky: subtree update:2e11d97b6c..a8544811d7
The change log was too large for the jenkins plugin
to handle therefore it has been removed. Here is
the first and last commit of each subtree:
meta-openembedded:d0748372d2
cppzmq: bump to version 4.6.0
meta-openembedded:17fd382f34
mpv: Remove X11 dependency
poky:9052e5b32a
package_ipk: Remove pointless comment to trigger rebuild
poky:a8544811d7
pbzip2: Fix license warning
Change-Id: If0fc6c37629642ee207a4ca2f7aa501a2c673cd6
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/poky/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch b/poky/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch
new file mode 100644
index 0000000..fd165d4
--- /dev/null
+++ b/poky/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch
@@ -0,0 +1,911 @@
+From 505f10a0ea1a8bba0584859d9a348bb779593ec2 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 2 Mar 2015 02:31:12 +0000
+Subject: [PATCH] Add support for Renesas SH (sh4) architecture.
+
+gdb (7.4-1~cvs20111117.2) experimental; urgency=low
+ .
+ * Add Renesas SH (sh4) support (Closes: #576242)
+ - Thanks Nobuhiro Iwamatsu, Takashi Yoshii.
+Author: Hector Oron <zumbi@debian.org>
+Bug-Debian: http://bugs.debian.org/576242
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ gdb/Makefile.in | 2 +
+ gdb/configure.host | 1 +
+ gdb/sh-linux-tdep.c | 519 +++++++++++++++++++++++++++
+ gdb/sh-tdep.c | 53 ++-
+ gdb/sh-tdep.h | 49 +++
+ gdb/testsuite/gdb.asm/asm-source.exp | 5 +
+ gdb/testsuite/gdb.asm/sh.inc | 3 +-
+ gdb/testsuite/gdb.base/annota1.c | 3 +
+ gdb/testsuite/gdb.base/annota3.c | 4 +
+ gdb/testsuite/gdb.base/sigall.c | 3 +
+ gdb/testsuite/gdb.base/signals.c | 4 +
+ 11 files changed, 617 insertions(+), 29 deletions(-)
+
+diff --git a/gdb/Makefile.in b/gdb/Makefile.in
+index c3e074b21f..42dd7af59c 100644
+--- a/gdb/Makefile.in
++++ b/gdb/Makefile.in
+@@ -2317,6 +2317,8 @@ ALLDEPFILES = \
+ sh-nbsd-nat.c \
+ sh-nbsd-tdep.c \
+ sh-tdep.c \
++ sh-linux-tdep.c \
++ sh-linux-nat.c \
+ sol2-tdep.c \
+ solib-aix.c \
+ solib-svr4.c \
+diff --git a/gdb/configure.host b/gdb/configure.host
+index ce52823729..5b5173a71a 100644
+--- a/gdb/configure.host
++++ b/gdb/configure.host
+@@ -148,6 +148,7 @@ riscv*-*-linux*) gdb_host=linux ;;
+
+ s390*-*-linux*) gdb_host=linux ;;
+
++sh*-*-linux*) gdb_host=linux ;;
+ sh*-*-netbsdelf* | sh*-*-knetbsd*-gnu)
+ gdb_host=nbsd ;;
+ sh*-*-openbsd*) gdb_host=nbsd ;;
+diff --git a/gdb/sh-linux-tdep.c b/gdb/sh-linux-tdep.c
+index 13c10eeeda..1d0d583a64 100644
+--- a/gdb/sh-linux-tdep.c
++++ b/gdb/sh-linux-tdep.c
+@@ -18,14 +18,37 @@
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+ #include "defs.h"
++#include "gdbcore.h"
++#include "frame.h"
++#include "frame-base.h"
++#include "frame-unwind.h"
++#include "dwarf2-frame.h"
++#include "value.h"
++#include "regcache.h"
++#include "inferior.h"
+ #include "osabi.h"
+
++#include "reggroups.h"
++#include "arch-utils.h"
++#include "floatformat.h"
+ #include "solib-svr4.h"
+ #include "symtab.h"
++#include "gdb_string.h"
++#include "command.h"
++#include "gdb_assert.h"
+
+ #include "trad-frame.h"
+ #include "tramp-frame.h"
+
++#include <sys/ptrace.h>
++#include <sys/types.h>
++#include <sys/param.h>
++#include <sys/user.h>
++#include <sys/syscall.h>
++
++#include <asm/ptrace.h>
++
++#include "regset.h"
+ #include "glibc-tdep.h"
+ #include "sh-tdep.h"
+ #include "linux-tdep.h"
+@@ -181,9 +204,505 @@ static struct tramp_frame sh_linux_rt_sigreturn_tramp_frame = {
+ sh_linux_rt_sigreturn_init
+ };
+
++/* Recognizing signal handler frames. */
++
++/* GNU/Linux has two flavors of signals. Normal signal handlers, and
++ "realtime" (RT) signals. The RT signals can provide additional
++ information to the signal handler if the SA_SIGINFO flag is set
++ when establishing a signal handler using `sigaction'. It is not
++ unlikely that future versions of GNU/Linux will support SA_SIGINFO
++ for normal signals too. */
++
++/* When the SH Linux kernel calls a signal handler and the
++ SA_RESTORER flag isn't set, the return address points to a bit of
++ code on the stack. This function returns whether the PC appears to
++ be within this bit of code.
++
++ The instruction sequence for normal signals is
++ mov.w 1f,r3
++ trapa #16
++ or r0, r0
++ or r0, r0
++ or r0, r0
++ or r0, r0
++ or r0, r0
++ 1: .word __NR_sigreturn
++ or 0x9305 0xc310 0x200b 0x200b 0x200b 0x200b 0x200b 0x0077.
++
++ Checking for the code sequence should be somewhat reliable, because
++ the effect is to call the system call sigreturn. This is unlikely
++ to occur anywhere other than a signal trampoline.
++
++ It kind of sucks that we have to read memory from the process in
++ order to identify a signal trampoline, but there doesn't seem to be
++ any other way. The PC_IN_SIGTRAMP macro in tm-linux.h arranges to
++ only call us if no function name could be identified, which should
++ be the case since the code is on the stack.
++
++ Detection of signal trampolines for handlers that set the
++ SA_RESTORER flag is in general not possible. Unfortunately this is
++ what the GNU C Library has been doing for quite some time now.
++ However, as of version 2.1.2, the GNU C Library uses signal
++ trampolines (named __restore and __restore_rt) that are identical
++ to the ones used by the kernel. Therefore, these trampolines are
++ supported too. */
++
++#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
++#define TRAP16 0xc310 /* Syscall w/no args (NR in R3) */
++#define OR_R0_R0 0x200b /* or r0,r0 (insert to avoid hardware bug) */
++
++#define LINUX_SIGTRAMP_INSN0 MOVW(7) /* Move mem word at PC+7 to R3 */
++#define LINUX_SIGTRAMP_INSN1 TRAP16 /* Syscall w/no args (NR in R3) */
++#define LINUX_SIGTRAMP_INSN2 OR_R0_R0 /* or r0,r0 (insert to avoid hardware bug) */
++
++static const unsigned short linux_sigtramp_code[] =
++{
++ LINUX_SIGTRAMP_INSN0,
++ LINUX_SIGTRAMP_INSN1,
++ LINUX_SIGTRAMP_INSN2,
++ LINUX_SIGTRAMP_INSN2,
++ LINUX_SIGTRAMP_INSN2,
++ LINUX_SIGTRAMP_INSN2,
++ LINUX_SIGTRAMP_INSN2,
++ __NR_sigreturn
++};
++
++#define LINUX_SIGTRAMP_LEN (sizeof linux_sigtramp_code)
++
++/* If PC is in a sigtramp routine, return the address of the start of
++ the routine. Otherwise, return 0. */
++
++static CORE_ADDR
++sh_linux_sigtramp_start (struct frame_info *next_frame)
++{
++ CORE_ADDR pc = get_frame_pc (next_frame);
++ gdb_byte buf[LINUX_SIGTRAMP_LEN];
++
++ /* We only recognize a signal trampoline if PC is at the start of
++ one of the three instructions. We optimize for finding the PC at
++ the start, as will be the case when the trampoline is not the
++ first frame on the stack. We assume that in the case where the
++ PC is not at the start of the instruction sequence, there will be
++ a few trailing readable bytes on the stack. */
++
++ if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_SIGTRAMP_LEN))
++ return 0;
++
++ if (buf[0] != LINUX_SIGTRAMP_INSN0)
++ {
++ if (buf[0] != LINUX_SIGTRAMP_INSN1)
++ return 0;
++
++ pc -= 2;
++
++ if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_SIGTRAMP_LEN))
++ return 0;
++ }
++
++ if (memcmp (buf, linux_sigtramp_code, LINUX_SIGTRAMP_LEN) != 0)
++ return 0;
++
++ return pc;
++}
++
++/* This function does the same for RT signals. Here the instruction
++ sequence is
++ mov.w 1f,r3
++ trapa #16
++ or r0, r0
++ or r0, r0
++ or r0, r0
++ or r0, r0
++ or r0, r0
++ 1: .word __NR_rt_sigreturn
++ or 0x9305 0xc310 0x200b 0x200b 0x200b 0x200b 0x200b 0x00ad.
++
++ The effect is to call the system call rt_sigreturn. */
++
++#define LINUX_RT_SIGTRAMP_INSN0 MOVW(7) /* Move mem word at PC+7 to R3 */
++#define LINUX_RT_SIGTRAMP_INSN1 TRAP16 /* Syscall w/no args (NR in R3) */
++#define LINUX_RT_SIGTRAMP_INSN2 OR_R0_R0 /* or r0,r0 (insert to avoid hardware bug) */
++
++static const unsigned short linux_rt_sigtramp_code[] =
++{
++ LINUX_RT_SIGTRAMP_INSN0,
++ LINUX_RT_SIGTRAMP_INSN1,
++ LINUX_RT_SIGTRAMP_INSN2,
++ LINUX_RT_SIGTRAMP_INSN2,
++ LINUX_RT_SIGTRAMP_INSN2,
++ LINUX_RT_SIGTRAMP_INSN2,
++ LINUX_RT_SIGTRAMP_INSN2,
++ __NR_rt_sigreturn
++};
++
++#define LINUX_RT_SIGTRAMP_LEN (sizeof linux_rt_sigtramp_code)
++
++/* If PC is in a RT sigtramp routine, return the address of the start
++ of the routine. Otherwise, return 0. */
++
++static CORE_ADDR
++sh_linux_rt_sigtramp_start (struct frame_info *next_frame)
++{
++ CORE_ADDR pc = get_frame_pc (next_frame);
++ gdb_byte buf[LINUX_RT_SIGTRAMP_LEN];
++
++ /* We only recognize a signal trampoline if PC is at the start of
++ one of the two instructions. We optimize for finding the PC at
++ the start, as will be the case when the trampoline is not the
++ first frame on the stack. We assume that in the case where the
++ PC is not at the start of the instruction sequence, there will be
++ a few trailing readable bytes on the stack. */
++
++ if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_RT_SIGTRAMP_LEN))
++ return 0;
++
++ if (buf[0] != LINUX_RT_SIGTRAMP_INSN0)
++ {
++ if (buf[0] != LINUX_RT_SIGTRAMP_INSN1)
++ return 0;
++
++ pc -= 2;
++
++ if (!safe_frame_unwind_memory (next_frame, pc, buf,
++ LINUX_RT_SIGTRAMP_LEN))
++ return 0;
++ }
++
++ if (memcmp (buf, linux_rt_sigtramp_code, LINUX_RT_SIGTRAMP_LEN) != 0)
++ return 0;
++
++ return pc;
++}
++
++/* Return whether PC is in a GNU/Linux sigtramp routine. */
++
++static int
++sh_linux_sigtramp_p (struct frame_info *this_frame)
++{
++ CORE_ADDR pc = get_frame_pc (this_frame);
++ char *name;
++
++ find_pc_partial_function (pc, &name, NULL, NULL);
++
++ /* If we have NAME, we can optimize the search. The trampolines are
++ named __restore and __restore_rt. However, they aren't dynamically
++ exported from the shared C library, so the trampoline may appear to
++ be part of the preceding function. This should always be sigaction,
++ __sigaction, or __libc_sigaction (all aliases to the same function). */
++ if (name == NULL || strstr (name, "sigaction") != NULL)
++ return (sh_linux_sigtramp_start (this_frame) != 0
++ || sh_linux_rt_sigtramp_start (this_frame) != 0);
++
++ return (strcmp ("__restore", name) == 0
++ || strcmp ("__restore_rt", name) == 0);
++}
++
++/* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>. */
++#define SH_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 12
++
++
++/* Assuming NEXT_FRAME is a frame following a GNU/Linux sigtramp
++ routine, return the address of the associated sigcontext structure. */
++
++static CORE_ADDR
++sh_linux_sigcontext_addr (struct frame_info *this_frame)
++{
++ CORE_ADDR pc;
++ CORE_ADDR sp;
++
++ sp = get_frame_register_unsigned (this_frame, SP_REGNUM);
++
++ pc = sh_linux_sigtramp_start (this_frame);
++ if (pc)
++ {
++ return sp;
++ }
++
++ pc = sh_linux_rt_sigtramp_start (this_frame);
++ if (pc)
++ {
++ CORE_ADDR ucontext_addr;
++
++ /* The sigcontext structure is part of the user context. A
++ pointer to the user context is passed as the third argument
++ to the signal handler. */
++ ucontext_addr = get_frame_register_unsigned (this_frame, ARG0_REGNUM+2);
++ return ucontext_addr + SH_LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
++ }
++
++ error ("Couldn't recognize signal trampoline.");
++ return 0;
++}
++
++/* Signal trampolines. */
++extern struct sh_frame_cache *sh_alloc_frame_cache (void);
++
++static struct sh_frame_cache *
++sh_linux_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache)
++{
++ struct sh_frame_cache *cache;
++ struct gdbarch_tdep *tdep = gdbarch_tdep (get_current_arch ());
++ CORE_ADDR sigcontext_addr;
++
++ if (*this_cache)
++ return *this_cache;
++
++ cache = sh_alloc_frame_cache ();
++
++ cache->base = get_frame_register_unsigned (this_frame, SP_REGNUM);
++ sigcontext_addr = tdep->sigcontext_addr (this_frame);
++ if (tdep->sc_reg_offset)
++ {
++ int i;
++
++ gdb_assert (tdep->sc_num_regs <= SH_NUM_REGS);
++
++ for (i = 0; i < tdep->sc_num_regs; i++)
++ if (tdep->sc_reg_offset[i] != -1)
++ cache->saved_regs[i] = sigcontext_addr + tdep->sc_reg_offset[i];
++ }
++
++ *this_cache = cache;
++ return cache;
++}
++
++static void
++sh_linux_sigtramp_frame_this_id (struct frame_info *this_frame, void **this_cache,
++ struct frame_id *this_id)
++{
++ struct sh_frame_cache *cache =
++ sh_linux_sigtramp_frame_cache (this_frame, this_cache);
++
++ (*this_id) = frame_id_build (cache->base + 64, cache->pc);
++}
++
++extern struct value * sh_frame_prev_register ();
++static struct value *
++sh_linux_sigtramp_frame_prev_register (struct frame_info *this_frame,
++ void **this_cache, int regnum)
++{
++ sh_linux_sigtramp_frame_cache (this_frame, this_cache);
++
++ return sh_frame_prev_register (this_frame, this_cache, regnum);
++}
++
++static int
++sh_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
++ struct frame_info *this_frame,
++ void **this_prologue_cache)
++{
++ struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame));
++
++ /* We shouldn't even bother if we don't have a sigcontext_addr
++ handler. */
++ if (tdep->sigcontext_addr == NULL)
++ return 0;
++
++ if (tdep->sigtramp_p != NULL)
++ {
++ if (tdep->sigtramp_p (this_frame))
++ return 1;
++ }
++
++ return 0;
++}
++
++static const struct frame_unwind sh_linux_sigtramp_frame_unwind =
++{
++ SIGTRAMP_FRAME,
++ sh_linux_sigtramp_frame_this_id,
++ sh_linux_sigtramp_frame_prev_register,
++ NULL,
++ sh_linux_sigtramp_frame_sniffer
++};
++
++/* Supply register REGNUM from the buffer specified by GREGS and LEN
++ in the general-purpose register set REGSET to register cache
++ REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
++
++void
++sh_supply_gregset (const struct regset *regset, struct regcache *regcache,
++ int regnum, const void *gregs, size_t len)
++{
++ const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
++ const char *regs = gregs;
++ int i;
++
++ gdb_assert (len == tdep->sizeof_gregset);
++
++ for (i = 0; i < tdep->gregset_num_regs; i++)
++ {
++ if ((regnum == i || regnum == -1)
++ && tdep->gregset_reg_offset[i] != -1)
++ regcache_raw_supply (regcache, i, regs + tdep->gregset_reg_offset[i]);
++ }
++}
++
++/* Collect register REGNUM from the register cache REGCACHE and store
++ it in the buffer specified by GREGS and LEN as described by the
++ general-purpose register set REGSET. If REGNUM is -1, do this for
++ all registers in REGSET. */
++
++void
++sh_collect_gregset (const struct regset *regset,
++ const struct regcache *regcache,
++ int regnum, void *gregs, size_t len)
++{
++ const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
++ char *regs = gregs;
++ int i;
++
++ gdb_assert (len == tdep->sizeof_gregset);
++
++ for (i = 0; i < tdep->gregset_num_regs; i++)
++ {
++ if ((regnum == i || regnum == -1)
++ && tdep->gregset_reg_offset[i] != -1)
++ regcache_raw_collect (regcache, i, regs + tdep->gregset_reg_offset[i]);
++ }
++}
++
++/* Supply register REGNUM from the buffer specified by FPREGS and LEN
++ in the floating-point register set REGSET to register cache
++ REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
++
++static void
++sh_supply_fpregset (const struct regset *regset, struct regcache *regcache,
++ int regnum, const void *fpregs, size_t len)
++{
++ const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
++ const char *regs = fpregs;
++ int i;
++
++ gdb_assert (len == tdep->sizeof_fpregset);
++ for (i = 0; i < 16; i++)
++ {
++ if (regnum == i+25 || regnum == -1)
++ regcache_raw_supply (regcache, i+25, regs + i*4);
++ }
++ if (regnum == FPSCR_REGNUM || regnum == -1)
++ regcache_raw_supply (regcache, FPSCR_REGNUM, regs + 32*4);
++ if (regnum == FPUL_REGNUM || regnum == -1)
++ regcache_raw_supply (regcache, FPUL_REGNUM, regs + 33*4);
++}
++
++/* Collect register REGNUM from the register cache REGCACHE and store
++ it in the buffer specified by FPREGS and LEN as described by the
++ floating-point register set REGSET. If REGNUM is -1, do this for
++ all registers in REGSET. */
++
++static void
++sh_collect_fpregset (const struct regset *regset,
++ const struct regcache *regcache,
++ int regnum, void *fpregs, size_t len)
++{
++ const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
++ char *regs = fpregs;
++ int i;
++
++ gdb_assert (len == tdep->sizeof_fpregset);
++ for (i = 0; i < 16; i++)
++ {
++ if (regnum == i+25 || regnum == -1)
++ regcache_raw_collect (regcache, i+25, regs + i*4);
++ }
++ if (regnum == FPSCR_REGNUM || regnum == -1)
++ regcache_raw_collect (regcache, FPSCR_REGNUM, regs + 32*4);
++ if (regnum == FPUL_REGNUM || regnum == -1)
++ regcache_raw_collect (regcache, FPUL_REGNUM, regs + 33*4);
++}
++
++/* Return the appropriate register set for the core section identified
++ by SECT_NAME and SECT_SIZE. */
++
++const struct regset *
++sh_linux_regset_from_core_section (struct gdbarch *gdbarch,
++ const char *sect_name, size_t sect_size)
++{
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++
++ if (strcmp (sect_name, ".reg") == 0 && sect_size == tdep->sizeof_gregset)
++ {
++ if (tdep->gregset == NULL)
++ tdep->gregset = regset_alloc (gdbarch, sh_supply_gregset,
++ sh_collect_gregset);
++ return tdep->gregset;
++ }
++
++ if ((strcmp (sect_name, ".reg2") == 0 && sect_size == tdep->sizeof_fpregset))
++ {
++ if (tdep->fpregset == NULL)
++ tdep->fpregset = regset_alloc (gdbarch, sh_supply_fpregset,
++ sh_collect_fpregset);
++ return tdep->fpregset;
++ }
++
++ return NULL;
++}
++
++/* The register sets used in GNU/Linux ELF core-dumps are identical to
++ the register sets in `struct user' that are used for a.out
++ core-dumps. These are also used by ptrace(2). The corresponding
++ types are `elf_gregset_t' for the general-purpose registers (with
++ `elf_greg_t' the type of a single GP register) and `elf_fpregset_t'
++ for the floating-point registers.
++
++ Those types used to be available under the names `gregset_t' and
++ `fpregset_t' too, and GDB used those names in the past. But those
++ names are now used for the register sets used in the `mcontext_t'
++ type, which have a different size and layout. */
++
++/* Mapping between the general-purpose registers in `struct user'
++ format and GDB's register cache layout. */
++
++/* From <sys/reg.h>. */
++static int sh_linux_gregset_reg_offset[] =
++{
++ 0, 4, 8, 12, 16, 20, 24, 28,
++ 32, 36, 40, 44, 48, 52, 56, 60,
++
++ REG_PC*4, REG_PR*4, REG_GBR*4, -1,
++ REG_MACH*4, REG_MACL*4, REG_SR*4,
++};
++
++/* Mapping between the general-purpose registers in `struct
++ sigcontext' format and GDB's register cache layout. */
++
++/* From <asm/sigcontext.h>. */
++static int sh_linux_sc_reg_offset[] =
++{
++ 4, 8, 12, 16, 20, 24, 28, 32,
++ 36, 40, 44, 48, 52, 56, 60, 64,
++ 68, 72, 80, -1,
++ 84, 88, 76
++};
++
+ static void
+ sh_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+ {
++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
++ bfd abfd;
++
++ tdep->gregset_reg_offset = sh_linux_gregset_reg_offset;
++ tdep->gregset_num_regs = ARRAY_SIZE (sh_linux_gregset_reg_offset);
++ tdep->sizeof_gregset = 23 * 4;
++
++ tdep->jb_pc_offset = 32; /* From <bits/setjmp.h>. */
++
++ tdep->sigtramp_p = sh_linux_sigtramp_p;
++ tdep->sigcontext_addr = sh_linux_sigcontext_addr;
++ tdep->sc_reg_offset = sh_linux_sc_reg_offset;
++ tdep->sc_num_regs = ARRAY_SIZE (sh_linux_sc_reg_offset);
++
++ frame_unwind_append_unwinder(gdbarch, &sh_linux_sigtramp_frame_unwind);
++
++ /* If we have a register mapping, enable the generic core file
++ support, unless it has already been enabled. */
++ if (tdep->gregset_reg_offset
++ && !gdbarch_regset_from_core_section_p (gdbarch))
++ set_gdbarch_regset_from_core_section (gdbarch,
++ sh_linux_regset_from_core_section);
++
+ linux_init_abi (info, gdbarch);
+
+ /* GNU/Linux uses SVR4-style shared libraries. */
+diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c
+index e3aee0ac28..5958cf3688 100644
+--- a/gdb/sh-tdep.c
++++ b/gdb/sh-tdep.c
+@@ -21,6 +21,9 @@
+ sac@cygnus.com. */
+
+ #include "defs.h"
++#include "arch-utils.h"
++#include "command.h"
++#include "dummy-frame.h"
+ #include "frame.h"
+ #include "frame-base.h"
+ #include "frame-unwind.h"
+@@ -66,23 +69,6 @@ static const char *const sh_cc_enum[] = {
+
+ static const char *sh_active_calling_convention = sh_cc_gcc;
+
+-#define SH_NUM_REGS 67
+-
+-struct sh_frame_cache
+-{
+- /* Base address. */
+- CORE_ADDR base;
+- LONGEST sp_offset;
+- CORE_ADDR pc;
+-
+- /* Flag showing that a frame has been created in the prologue code. */
+- int uses_fp;
+-
+- /* Saved registers. */
+- CORE_ADDR saved_regs[SH_NUM_REGS];
+- CORE_ADDR saved_sp;
+-};
+-
+ static int
+ sh_is_renesas_calling_convention (struct type *func_type)
+ {
+@@ -1050,7 +1036,7 @@ sh_treat_as_flt_p (struct type *type)
+ return 0;
+ /* Otherwise if the type of that member is float, the whole type is
+ treated as float. */
+- if (TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_FLT)
++ if (TYPE_CODE (check_typedef (TYPE_FIELD_TYPE (type, 0))) == TYPE_CODE_FLT)
+ return 1;
+ /* Otherwise it's not treated as float. */
+ return 0;
+@@ -1100,7 +1086,7 @@ sh_push_dummy_call_fpu (struct gdbarch *gdbarch,
+ in four registers available. Loop thru args from first to last. */
+ for (argnum = 0; argnum < nargs; argnum++)
+ {
+- type = value_type (args[argnum]);
++ type = check_typedef (value_type (args[argnum]));
+ len = TYPE_LENGTH (type);
+ val = sh_justify_value_in_reg (gdbarch, args[argnum], len);
+
+@@ -1835,7 +1821,7 @@ sh_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
+ reg->how = DWARF2_FRAME_REG_UNDEFINED;
+ }
+
+-static struct sh_frame_cache *
++struct sh_frame_cache *
+ sh_alloc_frame_cache (void)
+ {
+ struct sh_frame_cache *cache;
+@@ -1862,7 +1848,7 @@ sh_alloc_frame_cache (void)
+ return cache;
+ }
+
+-static struct sh_frame_cache *
++struct sh_frame_cache *
+ sh_frame_cache (struct frame_info *this_frame, void **this_cache)
+ {
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+@@ -1929,9 +1915,9 @@ sh_frame_cache (struct frame_info *this_frame, void **this_cache)
+ return cache;
+ }
+
+-static struct value *
+-sh_frame_prev_register (struct frame_info *this_frame,
+- void **this_cache, int regnum)
++struct value *
++sh_frame_prev_register (struct frame_info *this_frame, void **this_cache,
++ int regnum)
+ {
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct sh_frame_cache *cache = sh_frame_cache (this_frame, this_cache);
+@@ -1945,7 +1931,7 @@ sh_frame_prev_register (struct frame_info *this_frame,
+ the current frame. Frob regnum so that we pull the value from
+ the correct place. */
+ if (regnum == gdbarch_pc_regnum (gdbarch))
+- regnum = PR_REGNUM;
++ regnum = PR_REGNUM; /* XXX: really? */
+
+ if (regnum < SH_NUM_REGS && cache->saved_regs[regnum] != -1)
+ return frame_unwind_got_memory (this_frame, regnum,
+@@ -2234,8 +2220,8 @@ sh_return_in_first_hidden_param_p (struct gdbarch *gdbarch,
+ static struct gdbarch *
+ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+ {
+- struct gdbarch *gdbarch;
+ struct gdbarch_tdep *tdep;
++ struct gdbarch *gdbarch;
+
+ /* If there is already a candidate, use it. */
+ arches = gdbarch_list_lookup_by_info (arches, &info);
+@@ -2247,6 +2233,18 @@ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+ tdep = XCNEW (struct gdbarch_tdep);
+ gdbarch = gdbarch_alloc (&info, tdep);
+
++ /* General-purpose registers. */
++ tdep->gregset = NULL;
++ tdep->gregset_reg_offset = NULL;
++ tdep->gregset_num_regs = 23;
++ tdep->sizeof_gregset = 0;
++
++ /* Floating-point registers. */
++ tdep->fpregset = NULL;
++ tdep->sizeof_fpregset = 34*4;
++
++ tdep->jb_pc_offset = -1;
++
+ set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
+ set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+ set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+@@ -2398,10 +2396,11 @@ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+ break;
+ }
+
++ dwarf2_append_unwinders (gdbarch);
++
+ /* Hook in ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
+- dwarf2_append_unwinders (gdbarch);
+ frame_unwind_append_unwinder (gdbarch, &sh_stub_unwind);
+ frame_unwind_append_unwinder (gdbarch, &sh_frame_unwind);
+
+diff --git a/gdb/sh-tdep.h b/gdb/sh-tdep.h
+index 76e2e76e39..2710f63010 100644
+--- a/gdb/sh-tdep.h
++++ b/gdb/sh-tdep.h
+@@ -21,6 +21,12 @@
+
+ /* Contributed by Steve Chamberlain sac@cygnus.com. */
+
++struct frame_info;
++struct gdbarch;
++struct reggroup;
++struct regset;
++struct regcache;
++
+ /* Registers for all SH variants. Used also by sh3-rom.c. */
+ enum
+ {
+@@ -29,6 +35,7 @@ enum
+ ARG0_REGNUM = 4,
+ ARGLAST_REGNUM = 7,
+ FP_REGNUM = 14,
++ SP_REGNUM = 15,
+ PC_REGNUM = 16,
+ PR_REGNUM = 17,
+ GBR_REGNUM = 18,
+@@ -81,6 +88,24 @@ enum
+ FV0_REGNUM = 76,
+ FV_LAST_REGNUM = 79
+ };
++#define SH_NUM_REGS 67
++
++struct sh_frame_cache
++{
++ /* Base address. */
++ CORE_ADDR base;
++ LONGEST sp_offset;
++ CORE_ADDR pc;
++
++ /* Flag showing that a frame has been created in the prologue code. */
++ int uses_fp;
++
++ /* Saved registers. */
++ CORE_ADDR saved_regs[SH_NUM_REGS];
++ CORE_ADDR saved_sp;
++};
++
++extern struct sh_frame_cache *sh_frame_cache (struct frame_info *next_frame, void **this_cache);
+
+ /* This structure describes a register in a core-file. */
+ struct sh_corefile_regmap
+@@ -89,8 +114,32 @@ struct sh_corefile_regmap
+ unsigned int offset;
+ };
+
++/* sh architecture specific information. */
+ struct gdbarch_tdep
+ {
++ /* General-purpose registers. */
++ struct regset *gregset;
++ int *gregset_reg_offset;
++ int gregset_num_regs;
++ size_t sizeof_gregset;
++
++ /* Floating-point registers. */
++ struct regset *fpregset;
++ size_t sizeof_fpregset;
++
++ /* Offset of saved PC in jmp_buf. */
++ int jb_pc_offset;
++
++ /* Detect sigtramp. */
++ int (*sigtramp_p) (struct frame_info *);
++
++ /* Get address of sigcontext for sigtramp. */
++ CORE_ADDR (*sigcontext_addr) (struct frame_info *);
++
++ /* Offset of registers in `struct sigcontext'. */
++ int *sc_reg_offset;
++ int sc_num_regs;
++
+ /* Non-NULL when debugging from a core file. Provides the offset
+ where each general-purpose register is stored inside the associated
+ core file section. */
+diff --git a/gdb/testsuite/gdb.asm/asm-source.exp b/gdb/testsuite/gdb.asm/asm-source.exp
+index 4914498f98..6e25cbed18 100644
+--- a/gdb/testsuite/gdb.asm/asm-source.exp
++++ b/gdb/testsuite/gdb.asm/asm-source.exp
+@@ -116,6 +116,11 @@ switch -glob -- [istarget] {
+ append link-flags " -m elf32ppc"
+ }
+ }
++ "sh*-linux*" {
++ set asm-arch sh-linux
++ set asm-flags "-I${srcdir}/${subdir} -I${objdir}/${subdir}"
++ set debug-flags "-gdwarf-2"
++ }
+ "sh*-*-*" {
+ set asm-arch sh
+ set debug-flags "-gdwarf-2"
+diff --git a/gdb/testsuite/gdb.asm/sh.inc b/gdb/testsuite/gdb.asm/sh.inc
+index a4a5fc545e..89efed7795 100644
+--- a/gdb/testsuite/gdb.asm/sh.inc
++++ b/gdb/testsuite/gdb.asm/sh.inc
+@@ -40,9 +40,8 @@
+ mov.l .Lconst\@,r1
+ bra .Lafterconst\@
+ nop
+- nop
+-.Lconst\@:
+ .align 2
++.Lconst\@:
+ .long \subr
+ .align 1
+ .Lafterconst\@:
+diff --git a/gdb/testsuite/gdb.base/annota1.c b/gdb/testsuite/gdb.base/annota1.c
+index 424e1b8327..0de2e7b633 100644
+--- a/gdb/testsuite/gdb.base/annota1.c
++++ b/gdb/testsuite/gdb.base/annota1.c
+@@ -1,6 +1,9 @@
+ #include <stdio.h>
+ #include <signal.h>
+
++#ifdef __sh__
++#define signal(a,b) /* Signals not supported on this target - make them go away */
++#endif
+
+ void
+ handle_USR1 (int sig)
+diff --git a/gdb/testsuite/gdb.base/annota3.c b/gdb/testsuite/gdb.base/annota3.c
+index 424e1b8327..952aaf218a 100644
+--- a/gdb/testsuite/gdb.base/annota3.c
++++ b/gdb/testsuite/gdb.base/annota3.c
+@@ -1,6 +1,10 @@
+ #include <stdio.h>
+ #include <signal.h>
+
++#ifdef __sh__
++#define signal(a,b) /* Signals not supported on this target - make them go away */
++#endif
++
+
+ void
+ handle_USR1 (int sig)
+diff --git a/gdb/testsuite/gdb.base/sigall.c b/gdb/testsuite/gdb.base/sigall.c
+index 81f3b08d6b..1574b2d6cb 100644
+--- a/gdb/testsuite/gdb.base/sigall.c
++++ b/gdb/testsuite/gdb.base/sigall.c
+@@ -1,6 +1,9 @@
+ #include <signal.h>
+ #include <unistd.h>
+
++#ifdef __sh__
++#define signal(a,b) /* Signals not supported on this target - make them go away */
++#endif
+
+ /* Signal handlers, we set breakpoints in them to make sure that the
+ signals really get delivered. */
+diff --git a/gdb/testsuite/gdb.base/signals.c b/gdb/testsuite/gdb.base/signals.c
+index 756606880f..1205a9bc9c 100644
+--- a/gdb/testsuite/gdb.base/signals.c
++++ b/gdb/testsuite/gdb.base/signals.c
+@@ -3,6 +3,10 @@
+ #include <signal.h>
+ #include <unistd.h>
+
++#ifdef __sh__
++#define signal(a,b) /* Signals not supported on this target - make them go away */
++#define alarm(a) /* Ditto for alarm() */
++#endif
+
+ static int count = 0;
+