gdb: Drop sh4 support patch

This patch needs to be upstreamed, its not clear if it still works.

(From OE-Core rev: 5a009e67a9e6549bab495363cc7434384a4c94c4)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 0 insertions, 915 deletions

diff --git a/meta/recipes-devtools/gdb/gdb-11.1.inc b/meta/recipes-devtools/gdb/gdb-11.1.inc
index a480997220..5364a880e3 100644
--- a/meta/recipes-devtools/gdb/gdb-11.1.inc
+++ b/meta/recipes-devtools/gdb/gdb-11.1.inc
@@ -8,7 +8,6 @@ SRC_URI = "${GNU_MIRROR}/gdb/gdb-${PV}.tar.xz \
            file://0001-make-man-install-relative-to-DESTDIR.patch \
            file://0002-mips-linux-nat-Define-_ABIO32-if-not-defined.patch \
            file://0003-ppc-ptrace-Define-pt_regs-uapi_pt_regs-on-GLIBC-syst.patch \
-           file://0004-Add-support-for-Renesas-SH-sh4-architecture.patch \
            file://0005-Dont-disable-libreadline.a-when-using-disable-static.patch \
            file://0006-use-asm-sgidefs.h.patch \
            file://0007-Change-order-of-CFLAGS.patch \
diff --git a/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch b/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch
deleted file mode 100644
index 37d633c9a8..0000000000
--- a/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch
+++ /dev/null
@@ -1,914 +0,0 @@
-From d86ff49710210fb10d149121fa9a04c7cf41cb8b 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 04/10] 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                   |   2 +
- gdb/sh-linux-tdep.c                  | 519 +++++++++++++++++++++++++++
- gdb/sh-tdep.c                        |  52 +--
- 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, 618 insertions(+), 28 deletions(-)
-
-diff --git a/gdb/Makefile.in b/gdb/Makefile.in
-index b8729ed7b2e..ae5c05e1dbe 100644
---- a/gdb/Makefile.in
-+++ b/gdb/Makefile.in
-@@ -2284,6 +2284,8 @@ ALLDEPFILES = \
-        sh-netbsd-nat.c \
-        sh-netbsd-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 e94a19b0332..08b8478b56b 100644
---- a/gdb/configure.host
-+++ b/gdb/configure.host
-@@ -151,6 +151,8 @@ 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 700df35bc3b..aaed47ded81 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, 0);
- 
-   /* GNU/Linux uses SVR4-style shared libraries.  */
-diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c
-index bfb220adf79..6a077b235bf 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)
- {
-@@ -1050,6 +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.  */
-+  type = check_typedef (type);
-   if (type->field (0).type ()->code () == TYPE_CODE_FLT)
-     return 1;
-   /* Otherwise it's not treated as float.  */
-@@ -1100,7 +1087,7 @@ 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 +1822,7 @@ 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 +1849,7 @@ 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 +1916,9 @@ 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 +1932,7 @@ 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,
-@@ -2236,8 +2223,8 @@ 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);
-@@ -2249,6 +2236,18 @@ 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);
-@@ -2400,10 +2399,11 @@ 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 737b6dc6bdc..8d82e819b8c 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 dedcd92f2df..ae81b8becd3 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 a4a5fc545e4..89efed7795c 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 424e1b83278..0de2e7b633a 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 424e1b83278..952aaf218ab 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 81f3b08d6bc..1574b2d6cb8 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 756606880fa..1205a9bc9c5 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;
- 
--- 
-2.33.1
-