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authorKhem Raj <raj.khem@gmail.com>2012-04-25 15:45:32 -0700
committerRichard Purdie <richard.purdie@linuxfoundation.org>2012-05-01 12:38:08 +0100
commitcde6bce4b7dd04afbc51aa9295a6757d2b8ee0ba (patch)
tree3cad0ccb7815ba433832fbef31a1f3d96f3a1de7 /meta/recipes-devtools/gdb
parentcc18e7c0b93eaa77dca8285b211db807fec603fb (diff)
downloadpoky-cde6bce4b7dd04afbc51aa9295a6757d2b8ee0ba.tar.gz
gdb: Add support for building gdb target for SH4
(From OE-Core rev: d478424fbe01942577ab541174df191528556554) Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-devtools/gdb')
-rw-r--r--meta/recipes-devtools/gdb/gdb-common.inc2
-rw-r--r--meta/recipes-devtools/gdb/gdb.inc1
-rw-r--r--meta/recipes-devtools/gdb/gdb/renesas-sh-native-support.patch1389
3 files changed, 1391 insertions, 1 deletions
diff --git a/meta/recipes-devtools/gdb/gdb-common.inc b/meta/recipes-devtools/gdb/gdb-common.inc
index b520353721..8836aa3091 100644
--- a/meta/recipes-devtools/gdb/gdb-common.inc
+++ b/meta/recipes-devtools/gdb/gdb-common.inc
@@ -12,7 +12,7 @@ LTTNGUST_mips64 = ""
12LTTNGUST_mips64el = "" 12LTTNGUST_mips64el = ""
13LTTNGUST_sh4 = "" 13LTTNGUST_sh4 = ""
14 14
15INC_PR = "r8" 15INC_PR = "r9"
16 16
17LIC_FILES_CHKSUM = "file://COPYING;md5=59530bdf33659b29e73d4adb9f9f6552 \ 17LIC_FILES_CHKSUM = "file://COPYING;md5=59530bdf33659b29e73d4adb9f9f6552 \
18 file://COPYING.LIB;md5=9f604d8a4f8e74f4f5140845a21b6674 \ 18 file://COPYING.LIB;md5=9f604d8a4f8e74f4f5140845a21b6674 \
diff --git a/meta/recipes-devtools/gdb/gdb.inc b/meta/recipes-devtools/gdb/gdb.inc
index 9f5f34fed9..a620eca501 100644
--- a/meta/recipes-devtools/gdb/gdb.inc
+++ b/meta/recipes-devtools/gdb/gdb.inc
@@ -4,6 +4,7 @@ inherit gettext
4 4
5SRC_URI += "file://kill_arm_map_symbols.patch \ 5SRC_URI += "file://kill_arm_map_symbols.patch \
6 file://gdbserver-cflags-last.diff;striplevel=0 \ 6 file://gdbserver-cflags-last.diff;striplevel=0 \
7 file://renesas-sh-native-support.patch \
7 " 8 "
8#LDFLAGS_append = " -s" 9#LDFLAGS_append = " -s"
9#export CFLAGS_append=" -L${STAGING_LIBDIR}" 10#export CFLAGS_append=" -L${STAGING_LIBDIR}"
diff --git a/meta/recipes-devtools/gdb/gdb/renesas-sh-native-support.patch b/meta/recipes-devtools/gdb/gdb/renesas-sh-native-support.patch
new file mode 100644
index 0000000000..2b1ceb79f2
--- /dev/null
+++ b/meta/recipes-devtools/gdb/gdb/renesas-sh-native-support.patch
@@ -0,0 +1,1389 @@
1Description: Add Renesas SH (sh4) support
2 Add support for Renesas SH (sh4) architecture.
3 .
4 gdb (7.4-1~cvs20111117.2) experimental; urgency=low
5 .
6 * Add Renesas SH (sh4) support (Closes: #576242)
7 - Thanks Nobuhiro Iwamatsu, Takashi Yoshii.
8Author: Hector Oron <zumbi@debian.org>
9Bug-Debian: http://bugs.debian.org/576242
10
11---
12The information above should follow the Patch Tagging Guidelines, please
13checkout http://dep.debian.net/deps/dep3/ to learn about the format. Here
14are templates for supplementary fields that you might want to add:
15
16Forwarded: <no|not-needed|url proving that it has been forwarded>
17Last-Update: <2011-11-17>
18
19
20Upstream-Status: Pending
21Signed-off-by: Khem Raj <raj.khem@gmail.com>
22
23Index: gdb-7.4/gdb/configure.host
24===================================================================
25--- gdb-7.4.orig/gdb/configure.host 2012-04-24 07:06:35.085317177 -0700
26+++ gdb-7.4/gdb/configure.host 2012-04-24 07:09:14.365324889 -0700
27@@ -139,6 +139,7 @@
28
29 s390*-*-*) gdb_host=s390 ;;
30
31+sh*-*-linux*) gdb_host=linux ;;
32 sh*-*-netbsdelf* | sh*-*-knetbsd*-gnu)
33 gdb_host=nbsd ;;
34 sh*-*-openbsd*) gdb_host=nbsd ;;
35Index: gdb-7.4/gdb/Makefile.in
36===================================================================
37--- gdb-7.4.orig/gdb/Makefile.in 2012-04-24 07:06:35.093317178 -0700
38+++ gdb-7.4/gdb/Makefile.in 2012-04-24 07:09:14.369324886 -0700
39@@ -1544,6 +1544,7 @@
40 score-tdep.c \
41 ser-go32.c ser-pipe.c ser-tcp.c ser-mingw.c \
42 sh-tdep.c sh64-tdep.c shnbsd-tdep.c shnbsd-nat.c \
43+ sh-linux-tdep.c sh-linux-nat.c \
44 sol2-tdep.c \
45 solib-irix.c solib-svr4.c solib-sunos.c \
46 sparc-linux-nat.c sparc-linux-tdep.c \
47Index: gdb-7.4/gdb/sh-linux-tdep.c
48===================================================================
49--- gdb-7.4.orig/gdb/sh-linux-tdep.c 2012-04-24 07:06:35.073317177 -0700
50+++ gdb-7.4/gdb/sh-linux-tdep.c 2012-04-24 07:09:14.369324886 -0700
51@@ -18,11 +18,34 @@
52 along with this program. If not, see <http://www.gnu.org/licenses/>. */
53
54 #include "defs.h"
55+#include "gdbcore.h"
56+#include "frame.h"
57+#include "frame-base.h"
58+#include "frame-unwind.h"
59+#include "dwarf2-frame.h"
60+#include "value.h"
61+#include "regcache.h"
62+#include "inferior.h"
63 #include "osabi.h"
64
65+#include "reggroups.h"
66+#include "arch-utils.h"
67+#include "floatformat.h"
68 #include "solib-svr4.h"
69 #include "symtab.h"
70+#include "gdb_string.h"
71+#include "command.h"
72+#include "gdb_assert.h"
73
74+#include <sys/ptrace.h>
75+#include <sys/types.h>
76+#include <sys/param.h>
77+#include <sys/user.h>
78+#include <sys/syscall.h>
79+
80+#include <asm/ptrace.h>
81+
82+#include "regset.h"
83 #include "glibc-tdep.h"
84 #include "sh-tdep.h"
85 #include "linux-tdep.h"
86@@ -70,9 +93,505 @@
87 {-1 /* Terminator. */, 0}
88 };
89
90+/* Recognizing signal handler frames. */
91+
92+/* GNU/Linux has two flavors of signals. Normal signal handlers, and
93+ "realtime" (RT) signals. The RT signals can provide additional
94+ information to the signal handler if the SA_SIGINFO flag is set
95+ when establishing a signal handler using `sigaction'. It is not
96+ unlikely that future versions of GNU/Linux will support SA_SIGINFO
97+ for normal signals too. */
98+
99+/* When the SH Linux kernel calls a signal handler and the
100+ SA_RESTORER flag isn't set, the return address points to a bit of
101+ code on the stack. This function returns whether the PC appears to
102+ be within this bit of code.
103+
104+ The instruction sequence for normal signals is
105+ mov.w 1f,r3
106+ trapa #16
107+ or r0, r0
108+ or r0, r0
109+ or r0, r0
110+ or r0, r0
111+ or r0, r0
112+ 1: .word __NR_sigreturn
113+ or 0x9305 0xc310 0x200b 0x200b 0x200b 0x200b 0x200b 0x0077.
114+
115+ Checking for the code sequence should be somewhat reliable, because
116+ the effect is to call the system call sigreturn. This is unlikely
117+ to occur anywhere other than a signal trampoline.
118+
119+ It kind of sucks that we have to read memory from the process in
120+ order to identify a signal trampoline, but there doesn't seem to be
121+ any other way. The PC_IN_SIGTRAMP macro in tm-linux.h arranges to
122+ only call us if no function name could be identified, which should
123+ be the case since the code is on the stack.
124+
125+ Detection of signal trampolines for handlers that set the
126+ SA_RESTORER flag is in general not possible. Unfortunately this is
127+ what the GNU C Library has been doing for quite some time now.
128+ However, as of version 2.1.2, the GNU C Library uses signal
129+ trampolines (named __restore and __restore_rt) that are identical
130+ to the ones used by the kernel. Therefore, these trampolines are
131+ supported too. */
132+
133+#define MOVW(n) (0x9300|((n)-2)) /* Move mem word at PC+n to R3 */
134+#define TRAP16 0xc310 /* Syscall w/no args (NR in R3) */
135+#define OR_R0_R0 0x200b /* or r0,r0 (insert to avoid hardware bug) */
136+
137+#define LINUX_SIGTRAMP_INSN0 MOVW(7) /* Move mem word at PC+7 to R3 */
138+#define LINUX_SIGTRAMP_INSN1 TRAP16 /* Syscall w/no args (NR in R3) */
139+#define LINUX_SIGTRAMP_INSN2 OR_R0_R0 /* or r0,r0 (insert to avoid hardware bug) */
140+
141+static const unsigned short linux_sigtramp_code[] =
142+{
143+ LINUX_SIGTRAMP_INSN0,
144+ LINUX_SIGTRAMP_INSN1,
145+ LINUX_SIGTRAMP_INSN2,
146+ LINUX_SIGTRAMP_INSN2,
147+ LINUX_SIGTRAMP_INSN2,
148+ LINUX_SIGTRAMP_INSN2,
149+ LINUX_SIGTRAMP_INSN2,
150+ __NR_sigreturn
151+};
152+
153+#define LINUX_SIGTRAMP_LEN (sizeof linux_sigtramp_code)
154+
155+/* If PC is in a sigtramp routine, return the address of the start of
156+ the routine. Otherwise, return 0. */
157+
158+static CORE_ADDR
159+sh_linux_sigtramp_start (struct frame_info *next_frame)
160+{
161+ CORE_ADDR pc = get_frame_pc (next_frame);
162+ gdb_byte buf[LINUX_SIGTRAMP_LEN];
163+
164+ /* We only recognize a signal trampoline if PC is at the start of
165+ one of the three instructions. We optimize for finding the PC at
166+ the start, as will be the case when the trampoline is not the
167+ first frame on the stack. We assume that in the case where the
168+ PC is not at the start of the instruction sequence, there will be
169+ a few trailing readable bytes on the stack. */
170+
171+ if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_SIGTRAMP_LEN))
172+ return 0;
173+
174+ if (buf[0] != LINUX_SIGTRAMP_INSN0)
175+ {
176+ if (buf[0] != LINUX_SIGTRAMP_INSN1)
177+ return 0;
178+
179+ pc -= 2;
180+
181+ if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_SIGTRAMP_LEN))
182+ return 0;
183+ }
184+
185+ if (memcmp (buf, linux_sigtramp_code, LINUX_SIGTRAMP_LEN) != 0)
186+ return 0;
187+
188+ return pc;
189+}
190+
191+/* This function does the same for RT signals. Here the instruction
192+ sequence is
193+ mov.w 1f,r3
194+ trapa #16
195+ or r0, r0
196+ or r0, r0
197+ or r0, r0
198+ or r0, r0
199+ or r0, r0
200+ 1: .word __NR_rt_sigreturn
201+ or 0x9305 0xc310 0x200b 0x200b 0x200b 0x200b 0x200b 0x00ad.
202+
203+ The effect is to call the system call rt_sigreturn. */
204+
205+#define LINUX_RT_SIGTRAMP_INSN0 MOVW(7) /* Move mem word at PC+7 to R3 */
206+#define LINUX_RT_SIGTRAMP_INSN1 TRAP16 /* Syscall w/no args (NR in R3) */
207+#define LINUX_RT_SIGTRAMP_INSN2 OR_R0_R0 /* or r0,r0 (insert to avoid hardware bug) */
208+
209+static const unsigned short linux_rt_sigtramp_code[] =
210+{
211+ LINUX_RT_SIGTRAMP_INSN0,
212+ LINUX_RT_SIGTRAMP_INSN1,
213+ LINUX_RT_SIGTRAMP_INSN2,
214+ LINUX_RT_SIGTRAMP_INSN2,
215+ LINUX_RT_SIGTRAMP_INSN2,
216+ LINUX_RT_SIGTRAMP_INSN2,
217+ LINUX_RT_SIGTRAMP_INSN2,
218+ __NR_rt_sigreturn
219+};
220+
221+#define LINUX_RT_SIGTRAMP_LEN (sizeof linux_rt_sigtramp_code)
222+
223+/* If PC is in a RT sigtramp routine, return the address of the start
224+ of the routine. Otherwise, return 0. */
225+
226+static CORE_ADDR
227+sh_linux_rt_sigtramp_start (struct frame_info *next_frame)
228+{
229+ CORE_ADDR pc = get_frame_pc (next_frame);
230+ gdb_byte buf[LINUX_RT_SIGTRAMP_LEN];
231+
232+ /* We only recognize a signal trampoline if PC is at the start of
233+ one of the two instructions. We optimize for finding the PC at
234+ the start, as will be the case when the trampoline is not the
235+ first frame on the stack. We assume that in the case where the
236+ PC is not at the start of the instruction sequence, there will be
237+ a few trailing readable bytes on the stack. */
238+
239+ if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_RT_SIGTRAMP_LEN))
240+ return 0;
241+
242+ if (buf[0] != LINUX_RT_SIGTRAMP_INSN0)
243+ {
244+ if (buf[0] != LINUX_RT_SIGTRAMP_INSN1)
245+ return 0;
246+
247+ pc -= 2;
248+
249+ if (!safe_frame_unwind_memory (next_frame, pc, buf,
250+ LINUX_RT_SIGTRAMP_LEN))
251+ return 0;
252+ }
253+
254+ if (memcmp (buf, linux_rt_sigtramp_code, LINUX_RT_SIGTRAMP_LEN) != 0)
255+ return 0;
256+
257+ return pc;
258+}
259+
260+/* Return whether PC is in a GNU/Linux sigtramp routine. */
261+
262+static int
263+sh_linux_sigtramp_p (struct frame_info *this_frame)
264+{
265+ CORE_ADDR pc = get_frame_pc (this_frame);
266+ char *name;
267+
268+ find_pc_partial_function (pc, &name, NULL, NULL);
269+
270+ /* If we have NAME, we can optimize the search. The trampolines are
271+ named __restore and __restore_rt. However, they aren't dynamically
272+ exported from the shared C library, so the trampoline may appear to
273+ be part of the preceding function. This should always be sigaction,
274+ __sigaction, or __libc_sigaction (all aliases to the same function). */
275+ if (name == NULL || strstr (name, "sigaction") != NULL)
276+ return (sh_linux_sigtramp_start (this_frame) != 0
277+ || sh_linux_rt_sigtramp_start (this_frame) != 0);
278+
279+ return (strcmp ("__restore", name) == 0
280+ || strcmp ("__restore_rt", name) == 0);
281+}
282+
283+/* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>. */
284+#define SH_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 12
285+
286+
287+/* Assuming NEXT_FRAME is a frame following a GNU/Linux sigtramp
288+ routine, return the address of the associated sigcontext structure. */
289+
290+static CORE_ADDR
291+sh_linux_sigcontext_addr (struct frame_info *this_frame)
292+{
293+ CORE_ADDR pc;
294+ CORE_ADDR sp;
295+
296+ sp = get_frame_register_unsigned (this_frame, SP_REGNUM);
297+
298+ pc = sh_linux_sigtramp_start (this_frame);
299+ if (pc)
300+ {
301+ return sp;
302+ }
303+
304+ pc = sh_linux_rt_sigtramp_start (this_frame);
305+ if (pc)
306+ {
307+ CORE_ADDR ucontext_addr;
308+
309+ /* The sigcontext structure is part of the user context. A
310+ pointer to the user context is passed as the third argument
311+ to the signal handler. */
312+ ucontext_addr = get_frame_register_unsigned (this_frame, ARG0_REGNUM+2);
313+ return ucontext_addr + SH_LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
314+ }
315+
316+ error ("Couldn't recognize signal trampoline.");
317+ return 0;
318+}
319+
320+/* Signal trampolines. */
321+extern struct sh_frame_cache *sh_alloc_frame_cache (void);
322+
323+static struct sh_frame_cache *
324+sh_linux_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache)
325+{
326+ struct sh_frame_cache *cache;
327+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_current_arch ());
328+ CORE_ADDR sigcontext_addr;
329+
330+ if (*this_cache)
331+ return *this_cache;
332+
333+ cache = sh_alloc_frame_cache ();
334+
335+ cache->base = get_frame_register_unsigned (this_frame, SP_REGNUM);
336+ sigcontext_addr = tdep->sigcontext_addr (this_frame);
337+ if (tdep->sc_reg_offset)
338+ {
339+ int i;
340+
341+ gdb_assert (tdep->sc_num_regs <= SH_NUM_REGS);
342+
343+ for (i = 0; i < tdep->sc_num_regs; i++)
344+ if (tdep->sc_reg_offset[i] != -1)
345+ cache->saved_regs[i] = sigcontext_addr + tdep->sc_reg_offset[i];
346+ }
347+
348+ *this_cache = cache;
349+ return cache;
350+}
351+
352+static void
353+sh_linux_sigtramp_frame_this_id (struct frame_info *this_frame, void **this_cache,
354+ struct frame_id *this_id)
355+{
356+ struct sh_frame_cache *cache =
357+ sh_linux_sigtramp_frame_cache (this_frame, this_cache);
358+
359+ (*this_id) = frame_id_build (cache->base + 64, cache->pc);
360+}
361+
362+extern struct value * sh_frame_prev_register ();
363+static struct value *
364+sh_linux_sigtramp_frame_prev_register (struct frame_info *this_frame,
365+ void **this_cache, int regnum)
366+{
367+ sh_linux_sigtramp_frame_cache (this_frame, this_cache);
368+
369+ return sh_frame_prev_register (this_frame, this_cache, regnum);
370+}
371+
372+static int
373+sh_linux_sigtramp_frame_sniffer (const struct frame_unwind *self,
374+ struct frame_info *this_frame,
375+ void **this_prologue_cache)
376+{
377+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame));
378+
379+ /* We shouldn't even bother if we don't have a sigcontext_addr
380+ handler. */
381+ if (tdep->sigcontext_addr == NULL)
382+ return 0;
383+
384+ if (tdep->sigtramp_p != NULL)
385+ {
386+ if (tdep->sigtramp_p (this_frame))
387+ return 1;
388+ }
389+
390+ return 0;
391+}
392+
393+static const struct frame_unwind sh_linux_sigtramp_frame_unwind =
394+{
395+ SIGTRAMP_FRAME,
396+ sh_linux_sigtramp_frame_this_id,
397+ sh_linux_sigtramp_frame_prev_register,
398+ NULL,
399+ sh_linux_sigtramp_frame_sniffer
400+};
401+
402+/* Supply register REGNUM from the buffer specified by GREGS and LEN
403+ in the general-purpose register set REGSET to register cache
404+ REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
405+
406+void
407+sh_supply_gregset (const struct regset *regset, struct regcache *regcache,
408+ int regnum, const void *gregs, size_t len)
409+{
410+ const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
411+ const char *regs = gregs;
412+ int i;
413+
414+ gdb_assert (len == tdep->sizeof_gregset);
415+
416+ for (i = 0; i < tdep->gregset_num_regs; i++)
417+ {
418+ if ((regnum == i || regnum == -1)
419+ && tdep->gregset_reg_offset[i] != -1)
420+ regcache_raw_supply (regcache, i, regs + tdep->gregset_reg_offset[i]);
421+ }
422+}
423+
424+/* Collect register REGNUM from the register cache REGCACHE and store
425+ it in the buffer specified by GREGS and LEN as described by the
426+ general-purpose register set REGSET. If REGNUM is -1, do this for
427+ all registers in REGSET. */
428+
429+void
430+sh_collect_gregset (const struct regset *regset,
431+ const struct regcache *regcache,
432+ int regnum, void *gregs, size_t len)
433+{
434+ const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
435+ char *regs = gregs;
436+ int i;
437+
438+ gdb_assert (len == tdep->sizeof_gregset);
439+
440+ for (i = 0; i < tdep->gregset_num_regs; i++)
441+ {
442+ if ((regnum == i || regnum == -1)
443+ && tdep->gregset_reg_offset[i] != -1)
444+ regcache_raw_collect (regcache, i, regs + tdep->gregset_reg_offset[i]);
445+ }
446+}
447+
448+/* Supply register REGNUM from the buffer specified by FPREGS and LEN
449+ in the floating-point register set REGSET to register cache
450+ REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
451+
452+static void
453+sh_supply_fpregset (const struct regset *regset, struct regcache *regcache,
454+ int regnum, const void *fpregs, size_t len)
455+{
456+ const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
457+ const char *regs = fpregs;
458+ int i;
459+
460+ gdb_assert (len == tdep->sizeof_fpregset);
461+ for (i = 0; i < 16; i++)
462+ {
463+ if (regnum == i+25 || regnum == -1)
464+ regcache_raw_supply (regcache, i+25, regs + i*4);
465+ }
466+ if (regnum == FPSCR_REGNUM || regnum == -1)
467+ regcache_raw_supply (regcache, FPSCR_REGNUM, regs + 32*4);
468+ if (regnum == FPUL_REGNUM || regnum == -1)
469+ regcache_raw_supply (regcache, FPUL_REGNUM, regs + 33*4);
470+}
471+
472+/* Collect register REGNUM from the register cache REGCACHE and store
473+ it in the buffer specified by FPREGS and LEN as described by the
474+ floating-point register set REGSET. If REGNUM is -1, do this for
475+ all registers in REGSET. */
476+
477+static void
478+sh_collect_fpregset (const struct regset *regset,
479+ const struct regcache *regcache,
480+ int regnum, void *fpregs, size_t len)
481+{
482+ const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
483+ char *regs = fpregs;
484+ int i;
485+
486+ gdb_assert (len == tdep->sizeof_fpregset);
487+ for (i = 0; i < 16; i++)
488+ {
489+ if (regnum == i+25 || regnum == -1)
490+ regcache_raw_collect (regcache, i+25, regs + i*4);
491+ }
492+ if (regnum == FPSCR_REGNUM || regnum == -1)
493+ regcache_raw_collect (regcache, FPSCR_REGNUM, regs + 32*4);
494+ if (regnum == FPUL_REGNUM || regnum == -1)
495+ regcache_raw_collect (regcache, FPUL_REGNUM, regs + 33*4);
496+}
497+
498+/* Return the appropriate register set for the core section identified
499+ by SECT_NAME and SECT_SIZE. */
500+
501+const struct regset *
502+sh_linux_regset_from_core_section (struct gdbarch *gdbarch,
503+ const char *sect_name, size_t sect_size)
504+{
505+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
506+
507+ if (strcmp (sect_name, ".reg") == 0 && sect_size == tdep->sizeof_gregset)
508+ {
509+ if (tdep->gregset == NULL)
510+ tdep->gregset = regset_alloc (gdbarch, sh_supply_gregset,
511+ sh_collect_gregset);
512+ return tdep->gregset;
513+ }
514+
515+ if ((strcmp (sect_name, ".reg2") == 0 && sect_size == tdep->sizeof_fpregset))
516+ {
517+ if (tdep->fpregset == NULL)
518+ tdep->fpregset = regset_alloc (gdbarch, sh_supply_fpregset,
519+ sh_collect_fpregset);
520+ return tdep->fpregset;
521+ }
522+
523+ return NULL;
524+}
525+
526+/* The register sets used in GNU/Linux ELF core-dumps are identical to
527+ the register sets in `struct user' that are used for a.out
528+ core-dumps. These are also used by ptrace(2). The corresponding
529+ types are `elf_gregset_t' for the general-purpose registers (with
530+ `elf_greg_t' the type of a single GP register) and `elf_fpregset_t'
531+ for the floating-point registers.
532+
533+ Those types used to be available under the names `gregset_t' and
534+ `fpregset_t' too, and GDB used those names in the past. But those
535+ names are now used for the register sets used in the `mcontext_t'
536+ type, which have a different size and layout. */
537+
538+/* Mapping between the general-purpose registers in `struct user'
539+ format and GDB's register cache layout. */
540+
541+/* From <sys/reg.h>. */
542+static int sh_linux_gregset_reg_offset[] =
543+{
544+ 0, 4, 8, 12, 16, 20, 24, 28,
545+ 32, 36, 40, 44, 48, 52, 56, 60,
546+
547+ REG_PC*4, REG_PR*4, REG_GBR*4, -1,
548+ REG_MACH*4, REG_MACL*4, REG_SR*4,
549+};
550+
551+/* Mapping between the general-purpose registers in `struct
552+ sigcontext' format and GDB's register cache layout. */
553+
554+/* From <asm/sigcontext.h>. */
555+static int sh_linux_sc_reg_offset[] =
556+{
557+ 4, 8, 12, 16, 20, 24, 28, 32,
558+ 36, 40, 44, 48, 52, 56, 60, 64,
559+ 68, 72, 80, -1,
560+ 84, 88, 76
561+};
562+
563 static void
564 sh_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
565 {
566+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
567+ bfd abfd;
568+
569+ tdep->gregset_reg_offset = sh_linux_gregset_reg_offset;
570+ tdep->gregset_num_regs = ARRAY_SIZE (sh_linux_gregset_reg_offset);
571+ tdep->sizeof_gregset = 23 * 4;
572+
573+ tdep->jb_pc_offset = 32; /* From <bits/setjmp.h>. */
574+
575+ tdep->sigtramp_p = sh_linux_sigtramp_p;
576+ tdep->sigcontext_addr = sh_linux_sigcontext_addr;
577+ tdep->sc_reg_offset = sh_linux_sc_reg_offset;
578+ tdep->sc_num_regs = ARRAY_SIZE (sh_linux_sc_reg_offset);
579+
580+ frame_unwind_append_unwinder(gdbarch, &sh_linux_sigtramp_frame_unwind);
581+
582+ /* If we have a register mapping, enable the generic core file
583+ support, unless it has already been enabled. */
584+ if (tdep->gregset_reg_offset
585+ && !gdbarch_regset_from_core_section_p (gdbarch))
586+ set_gdbarch_regset_from_core_section (gdbarch,
587+ sh_linux_regset_from_core_section);
588+
589 linux_init_abi (info, gdbarch);
590
591 /* GNU/Linux uses SVR4-style shared libraries. */
592Index: gdb-7.4/gdb/sh-tdep.h
593===================================================================
594--- gdb-7.4.orig/gdb/sh-tdep.h 2012-04-24 07:06:35.101317178 -0700
595+++ gdb-7.4/gdb/sh-tdep.h 2012-04-24 07:09:14.369324886 -0700
596@@ -21,6 +21,12 @@
597
598 /* Contributed by Steve Chamberlain sac@cygnus.com. */
599
600+struct frame_info;
601+struct gdbarch;
602+struct reggroup;
603+struct regset;
604+struct regcache;
605+
606 /* Registers for all SH variants. Used also by sh3-rom.c. */
607 enum
608 {
609@@ -29,6 +35,7 @@
610 ARG0_REGNUM = 4,
611 ARGLAST_REGNUM = 7,
612 FP_REGNUM = 14,
613+ SP_REGNUM = 15,
614 PC_REGNUM = 16,
615 PR_REGNUM = 17,
616 GBR_REGNUM = 18,
617@@ -82,8 +89,26 @@
618 FV_LAST_REGNUM = 79
619 };
620
621+#define SH_NUM_REGS 67
622+
623+struct sh_frame_cache
624+{
625+ /* Base address. */
626+ CORE_ADDR base;
627+ LONGEST sp_offset;
628+ CORE_ADDR pc;
629+
630+ /* Flag showing that a frame has been created in the prologue code. */
631+ int uses_fp;
632+
633+ /* Saved registers. */
634+ CORE_ADDR saved_regs[SH_NUM_REGS];
635+ CORE_ADDR saved_sp;
636+};
637+
638 extern gdbarch_init_ftype sh64_gdbarch_init;
639 extern void sh64_show_regs (struct frame_info *);
640+extern struct sh_frame_cache *sh_frame_cache (struct frame_info *next_frame, void **this_cache);
641
642 /* This structure describes a register in a core-file. */
643 struct sh_corefile_regmap
644@@ -92,8 +117,32 @@
645 unsigned int offset;
646 };
647
648+/* sh architecture specific information. */
649 struct gdbarch_tdep
650 {
651+ /* General-purpose registers. */
652+ struct regset *gregset;
653+ int *gregset_reg_offset;
654+ int gregset_num_regs;
655+ size_t sizeof_gregset;
656+
657+ /* Floating-point registers. */
658+ struct regset *fpregset;
659+ size_t sizeof_fpregset;
660+
661+ /* Offset of saved PC in jmp_buf. */
662+ int jb_pc_offset;
663+
664+ /* Detect sigtramp. */
665+ int (*sigtramp_p) (struct frame_info *);
666+
667+ /* Get address of sigcontext for sigtramp. */
668+ CORE_ADDR (*sigcontext_addr) (struct frame_info *);
669+
670+ /* Offset of registers in `struct sigcontext'. */
671+ int *sc_reg_offset;
672+ int sc_num_regs;
673+
674 /* Non-NULL when debugging from a core file. Provides the offset
675 where each general-purpose register is stored inside the associated
676 core file section. */
677Index: gdb-7.4/gdb/sh-linux-nat.c
678===================================================================
679--- /dev/null 1970-01-01 00:00:00.000000000 +0000
680+++ gdb-7.4/gdb/sh-linux-nat.c 2012-04-24 07:09:28.557325573 -0700
681@@ -0,0 +1,269 @@
682+/* Low level SH interface to ptrace, for GDB when running native.
683+ Copyright (C) 2002, 2004 Free Software Foundation, Inc.
684+
685+This file is part of GDB.
686+
687+This program is free software; you can redistribute it and/or modify
688+it under the terms of the GNU General Public License as published by
689+the Free Software Foundation; either version 2 of the License, or
690+(at your option) any later version.
691+
692+This program is distributed in the hope that it will be useful,
693+but WITHOUT ANY WARRANTY; without even the implied warranty of
694+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
695+GNU General Public License for more details.
696+
697+You should have received a copy of the GNU General Public License
698+along with this program; if not, write to the Free Software
699+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
700+
701+#include "defs.h"
702+#include "inferior.h"
703+#include "gdbcore.h"
704+#include "regcache.h"
705+#include "linux-nat.h"
706+#include "target.h"
707+#include "arch-utils.h"
708+
709+#include "gdb_assert.h"
710+#include "gdb_string.h"
711+#include <sys/ptrace.h>
712+#include <sys/user.h>
713+#include <sys/procfs.h>
714+#include <asm/ptrace.h>
715+
716+/* Prototypes for supply_gregset etc. */
717+#include "gregset.h"
718+#include "sh-tdep.h"
719+
720+/* Defines ps_err_e, struct ps_prochandle. */
721+#include "gdb_proc_service.h"
722+
723+//#include <asm/elf.h>
724+
725+#define SH_LINUX_NUM_REGS 40
726+/* This table must line up with REGISTER_NAME in "sh-tdep.c". */
727+static const int regmap[] =
728+{
729+ /* general registers 0-15 */
730+ REG_REG0 , REG_REG0+1 , REG_REG0+2 , REG_REG0+3,
731+ REG_REG0+4 , REG_REG0+5 , REG_REG0+6 , REG_REG0+7,
732+ REG_REG0+8 , REG_REG0+9 , REG_REG0+10, REG_REG0+11,
733+ REG_REG0+12, REG_REG0+13, REG_REG0+14, REG_REG0+15,
734+ /* 16 - 22 */
735+ REG_PC, REG_PR, REG_GBR, -1, REG_MACH, REG_MACL, REG_SR,
736+ /* 23, 24 */
737+ REG_FPUL, REG_FPSCR,
738+ /* floating point registers 25 - 40 */
739+ REG_FPREG0 , REG_FPREG0+1 , REG_FPREG0+2 , REG_FPREG0+3 ,
740+ REG_FPREG0+4 , REG_FPREG0+5 , REG_FPREG0+6 , REG_FPREG0+7 ,
741+ REG_FPREG0+8 , REG_FPREG0+9 , REG_FPREG0+10, REG_FPREG0+11,
742+ REG_FPREG0+12, REG_FPREG0+13, REG_FPREG0+14, REG_FPREG0+15,
743+};
744+
745+CORE_ADDR
746+register_u_addr (CORE_ADDR blockend, int regnum)
747+{
748+ if (regnum < 0 || regnum >= sizeof regmap/sizeof regmap[0])
749+ return (CORE_ADDR)-1;
750+ return (blockend + 4 * regmap[regnum]);
751+}
752+
753+
754+/* Return the address in the core dump or inferior of register REGNO.
755+ BLOCKEND is the address of the end of the user structure. */
756+
757+CORE_ADDR
758+register_addr (int regno, CORE_ADDR blockend)
759+{
760+ CORE_ADDR addr;
761+
762+ if (regno < 0 || regno >= SH_LINUX_NUM_REGS) {
763+ internal_error (__FILE__, __LINE__,
764+ _("Got request for bad register number %d."), regno);
765+ }
766+
767+ REGISTER_U_ADDR (addr, blockend, regno);
768+
769+ return addr;
770+}
771+
772+/* Fetch one register. */
773+
774+static void
775+fetch_register (struct regcache *regcache, int tid, int regno)
776+{
777+ int val;
778+
779+ if (cannot_fetch_register (regno))
780+ {
781+ regcache_raw_supply (regcache, regno, NULL);
782+ return;
783+ }
784+
785+ errno = 0;
786+ val = ptrace (PTRACE_PEEKUSER, tid, register_addr (regno, 0), 0);
787+ if (errno != 0)
788+ perror_with_name (_("Couldn't get registers"));
789+
790+ regcache_raw_supply (regcache, regno, &val);
791+}
792+
793+/* Store one register. */
794+
795+static void
796+store_register (struct regcache *regcache, int tid, int regno)
797+{
798+ int val;
799+
800+ if (cannot_store_register (regno))
801+ return;
802+
803+ errno = 0;
804+ regcache_raw_collect (regcache, regno, &val);
805+ ptrace (PTRACE_POKEUSER, tid, register_addr (regno, 0), val);
806+ if (errno != 0)
807+ perror_with_name (_("Couldn't write registers"));
808+}
809+
810+/* Transfering the general-purpose registers between GDB, inferiors
811+ and core files. */
812+
813+/* Fill GDB's register array with the general-purpose register values
814+ in *GREGSETP. */
815+
816+void
817+supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp)
818+{
819+ elf_greg_t *regp = (elf_greg_t *) gregsetp;
820+ int i;
821+
822+ for (i = 0; i < 23; i++)
823+ if (regmap[i] == -1)
824+ regcache_raw_supply (regcache, i, NULL);
825+ else
826+ regcache_raw_supply (regcache, i, (char *) (regp + regmap[i]));
827+}
828+
829+/* Fill register REGNO (if it is a general-purpose register) in
830+ *GREGSETPS with the value in GDB's register array. If REGNO is -1,
831+ do this for all registers. */
832+
833+void
834+fill_gregset (const struct regcache *regcache, elf_gregset_t *gregsetp, int regno)
835+{
836+ elf_greg_t *regp = (elf_greg_t *) gregsetp;
837+ int i;
838+
839+ for (i = 0; i < 23; i++)
840+ if (regmap[i] != -1 && (regno == -1 || regno == i))
841+ regcache_raw_collect (regcache, i, (char *) (regp + regmap[i]));
842+}
843+
844+/* Transfering floating-point registers between GDB, inferiors and cores. */
845+
846+/* Fill GDB's register array with the floating-point register values in
847+ *FPREGSETP. */
848+
849+void
850+supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp)
851+{
852+ int i;
853+ long *regp = (long *)fpregsetp;
854+
855+ for (i = 0; i < 16; i++)
856+ regcache_raw_supply (regcache, 25 + i, (char *) (regp + i));
857+ regcache_raw_supply (regcache, FPUL_REGNUM, (char *) (regp + REG_FPUL - REG_FPREG0));
858+ regcache_raw_supply (regcache, FPSCR_REGNUM, (char *) (regp + REG_FPSCR - REG_FPREG0));
859+}
860+
861+/* Fill register REGNO (if it is a floating-point register) in
862+ *FPREGSETP with the value in GDB's register array. If REGNO is -1,
863+ do this for all registers. */
864+
865+void
866+fill_fpregset (const struct regcache *regcache, elf_fpregset_t *fpregsetp, int regno)
867+{
868+ int i;
869+ long *regp = (long *)fpregsetp;
870+
871+ for (i = 0; i < 16; i++)
872+ if ((regno == -1) || (regno == i))
873+ regcache_raw_collect (regcache, 25 + i, (char *) (regp + i));
874+ if ((regno == -1) || regno == FPSCR_REGNUM)
875+ regcache_raw_collect (regcache, FPSCR_REGNUM, (char *) (regp + REG_FPSCR - REG_FPREG0));
876+ if ((regno == -1) || regno == FPUL_REGNUM)
877+ regcache_raw_collect (regcache, FPUL_REGNUM, (char *) (regp + REG_FPUL - REG_FPREG0));
878+}
879+
880+/* Transferring arbitrary registers between GDB and inferior. */
881+
882+/* Check if register REGNO in the child process is accessible.
883+ If we are accessing registers directly via the U area, only the
884+ general-purpose registers are available.
885+ All registers should be accessible if we have GETREGS support. */
886+
887+int
888+cannot_fetch_register (int regno)
889+{
890+ return (regno < 0 || regno >= sizeof regmap / sizeof regmap[0] || regmap[regno] == -1);
891+}
892+
893+int
894+cannot_store_register (int regno)
895+{
896+ return (regno < 0 || regno >= sizeof regmap / sizeof regmap[0] || regmap[regno] == -1);
897+}
898+
899+/* Fetch register values from the inferior.
900+ If REGNO is negative, do this for all registers.
901+ Otherwise, REGNO specifies which register (so we can save time). */
902+
903+static void
904+sh_linux_fetch_inferior_registers (struct target_ops *ops, struct regcache *regcache, int regno)
905+{
906+ int i;
907+ int tid;
908+
909+ /* GNU/Linux LWP ID's are process ID's. */
910+ if ((tid = TIDGET (inferior_ptid)) == 0)
911+ tid = PIDGET (inferior_ptid); /* Not a threaded program. */
912+
913+ for (i = 0; i < SH_LINUX_NUM_REGS; i++)
914+ if (regno == -1 || regno == i)
915+ fetch_register (regcache, tid, i);
916+}
917+/* Store our register values back into the inferior.
918+ If REGNO is negative, do this for all registers.
919+ Otherwise, REGNO specifies which register (so we can save time). */
920+
921+static void
922+sh_linux_store_inferior_registers (struct target_ops *ops, struct regcache *regcache, int regno)
923+{
924+ int i;
925+ int tid;
926+
927+ /* GNU/Linux LWP ID's are process ID's. */
928+ if ((tid = TIDGET (inferior_ptid)) == 0)
929+ tid = PIDGET (inferior_ptid); /* Not a threaded program. */
930+
931+ for (i = 0; i < SH_LINUX_NUM_REGS; i++)
932+ if (regno == -1 || regno == i)
933+ store_register (regcache, tid, i);
934+}
935+
936+void
937+_initialize_sh_linux_nat (void)
938+{
939+ struct target_ops *t;
940+
941+ /* Fill in the generic GNU/Linux methods. */
942+ t = linux_target ();
943+
944+ /* Add our register access methods. */
945+ t->to_fetch_registers = sh_linux_fetch_inferior_registers;
946+ t->to_store_registers = sh_linux_store_inferior_registers;
947+
948+ /* Register the target. */
949+ linux_nat_add_target (t);
950+}
951Index: gdb-7.4/gdb/sh-tdep.c
952===================================================================
953--- gdb-7.4.orig/gdb/sh-tdep.c 2012-04-24 07:06:35.109317179 -0700
954+++ gdb-7.4/gdb/sh-tdep.c 2012-04-24 07:09:14.369324886 -0700
955@@ -21,6 +21,9 @@
956 sac@cygnus.com. */
957
958 #include "defs.h"
959+#include "arch-utils.h"
960+#include "command.h"
961+#include "dummy-frame.h"
962 #include "frame.h"
963 #include "frame-base.h"
964 #include "frame-unwind.h"
965@@ -37,6 +40,7 @@
966 #include "arch-utils.h"
967 #include "floatformat.h"
968 #include "regcache.h"
969+#include "regset.h"
970 #include "doublest.h"
971 #include "osabi.h"
972 #include "reggroups.h"
973@@ -69,23 +73,6 @@
974
975 static void (*sh_show_regs) (struct frame_info *);
976
977-#define SH_NUM_REGS 67
978-
979-struct sh_frame_cache
980-{
981- /* Base address. */
982- CORE_ADDR base;
983- LONGEST sp_offset;
984- CORE_ADDR pc;
985-
986- /* Flag showing that a frame has been created in the prologue code. */
987- int uses_fp;
988-
989- /* Saved registers. */
990- CORE_ADDR saved_regs[SH_NUM_REGS];
991- CORE_ADDR saved_sp;
992-};
993-
994 static int
995 sh_is_renesas_calling_convention (struct type *func_type)
996 {
997@@ -1040,7 +1027,7 @@
998 return 0;
999 /* Otherwise if the type of that member is float, the whole type is
1000 treated as float. */
1001- if (TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_FLT)
1002+ if (TYPE_CODE (check_typedef (TYPE_FIELD_TYPE (type, 0))) == TYPE_CODE_FLT)
1003 return 1;
1004 /* Otherwise it's not treated as float. */
1005 return 0;
1006@@ -1090,7 +1077,7 @@
1007 in four registers available. Loop thru args from first to last. */
1008 for (argnum = 0; argnum < nargs; argnum++)
1009 {
1010- type = value_type (args[argnum]);
1011+ type = check_typedef (value_type (args[argnum]));
1012 len = TYPE_LENGTH (type);
1013 val = sh_justify_value_in_reg (gdbarch, args[argnum], len);
1014
1015@@ -2508,7 +2495,7 @@
1016 reg->how = DWARF2_FRAME_REG_UNDEFINED;
1017 }
1018
1019-static struct sh_frame_cache *
1020+struct sh_frame_cache *
1021 sh_alloc_frame_cache (void)
1022 {
1023 struct sh_frame_cache *cache;
1024@@ -2535,7 +2522,7 @@
1025 return cache;
1026 }
1027
1028-static struct sh_frame_cache *
1029+struct sh_frame_cache *
1030 sh_frame_cache (struct frame_info *this_frame, void **this_cache)
1031 {
1032 struct gdbarch *gdbarch = get_frame_arch (this_frame);
1033@@ -2593,9 +2580,9 @@
1034 return cache;
1035 }
1036
1037-static struct value *
1038-sh_frame_prev_register (struct frame_info *this_frame,
1039- void **this_cache, int regnum)
1040+struct value *
1041+sh_frame_prev_register (struct frame_info *this_frame, void **this_cache,
1042+ int regnum)
1043 {
1044 struct gdbarch *gdbarch = get_frame_arch (this_frame);
1045 struct sh_frame_cache *cache = sh_frame_cache (this_frame, this_cache);
1046@@ -2609,7 +2596,7 @@
1047 the current frame. Frob regnum so that we pull the value from
1048 the correct place. */
1049 if (regnum == gdbarch_pc_regnum (gdbarch))
1050- regnum = PR_REGNUM;
1051+ regnum = PR_REGNUM; /* XXX: really? */
1052
1053 if (regnum < SH_NUM_REGS && cache->saved_regs[regnum] != -1)
1054 return frame_unwind_got_memory (this_frame, regnum,
1055@@ -2853,8 +2840,8 @@
1056 static struct gdbarch *
1057 sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
1058 {
1059- struct gdbarch *gdbarch;
1060 struct gdbarch_tdep *tdep;
1061+ struct gdbarch *gdbarch;
1062
1063 sh_show_regs = sh_generic_show_regs;
1064 switch (info.bfd_arch_info->mach)
1065@@ -2917,6 +2904,18 @@
1066 tdep = XZALLOC (struct gdbarch_tdep);
1067 gdbarch = gdbarch_alloc (&info, tdep);
1068
1069+ /* General-purpose registers. */
1070+ tdep->gregset = NULL;
1071+ tdep->gregset_reg_offset = NULL;
1072+ tdep->gregset_num_regs = 23;
1073+ tdep->sizeof_gregset = 0;
1074+
1075+ /* Floating-point registers. */
1076+ tdep->fpregset = NULL;
1077+ tdep->sizeof_fpregset = 34*4;
1078+
1079+ tdep->jb_pc_offset = -1;
1080+
1081 set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
1082 set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
1083 set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
1084@@ -3062,10 +3061,11 @@
1085 break;
1086 }
1087
1088+ dwarf2_append_unwinders (gdbarch);
1089+
1090 /* Hook in ABI-specific overrides, if they have been registered. */
1091 gdbarch_init_osabi (info, gdbarch);
1092
1093- dwarf2_append_unwinders (gdbarch);
1094 frame_unwind_append_unwinder (gdbarch, &sh_frame_unwind);
1095
1096 return gdbarch;
1097Index: gdb-7.4/gdb/testsuite/gdb.asm/sh-linux.inc
1098===================================================================
1099--- /dev/null 1970-01-01 00:00:00.000000000 +0000
1100+++ gdb-7.4/gdb/testsuite/gdb.asm/sh-linux.inc 2012-04-24 07:09:14.369324886 -0700
1101@@ -0,0 +1,78 @@
1102+# You'll find a bunch of nop opcodes in the below macros. They are
1103+# there to keep the code correctly aligned. Be careful to maintain
1104+# them when changing the code.
1105+
1106+ comment "subroutine declare"
1107+ .purgem gdbasm_declare
1108+ .macro gdbasm_declare name
1109+ .align 1
1110+ .global \name
1111+\name:
1112+ .endm
1113+
1114+ comment "subroutine prologue"
1115+ .macro gdbasm_enter
1116+ mov.l r14,@-r15
1117+ sts.l pr,@-r15
1118+ mov r15,r14
1119+ nop
1120+ .endm
1121+
1122+ comment "subroutine epilogue"
1123+ .macro gdbasm_leave
1124+ mov r14,r15
1125+ lds.l @r15+,pr
1126+ mov.l @r15+,r14
1127+ rts
1128+ nop
1129+ nop
1130+ .endm
1131+
1132+ comment "subroutine end"
1133+ .purgem gdbasm_end
1134+ .macro gdbasm_end name
1135+ .size \name, .-_foo1
1136+ .align 1
1137+ .endm
1138+
1139+ comment "subroutine call"
1140+ .macro gdbasm_call subr
1141+ mov.l .Lconst\@,r1
1142+ bra .Lafterconst\@
1143+ nop
1144+ .align 2
1145+.Lconst\@:
1146+ .long \subr
1147+.Lafterconst\@:
1148+ jsr @r1
1149+ nop
1150+ .endm
1151+
1152+ .macro gdbasm_several_nops
1153+ nop
1154+ nop
1155+ nop
1156+ nop
1157+ .endm
1158+
1159+ comment "exit (0)"
1160+ .macro gdbasm_exit0
1161+ sleep
1162+ nop
1163+ .endm
1164+
1165+ comment "crt0 startup"
1166+ .macro gdbasm_startup
1167+ mov #0,r14
1168+ .endm
1169+
1170+ comment "Declare a data variable"
1171+ .purgem gdbasm_datavar
1172+ .macro gdbasm_datavar name value
1173+ .data
1174+ .align 2
1175+ .type \name, @object
1176+ .size \name, 4
1177+\name:
1178+ .long \value
1179+ .endm
1180Index: gdb-7.4/gdb/testsuite/gdb.asm/sh.inc
1181===================================================================
1182--- gdb-7.4.orig/gdb/testsuite/gdb.asm/sh.inc 2012-04-24 07:06:35.001317175 -0700
1183+++ gdb-7.4/gdb/testsuite/gdb.asm/sh.inc 2012-04-24 07:09:14.369324886 -0700
1184@@ -40,9 +40,8 @@
1185 mov.l .Lconst\@,r1
1186 bra .Lafterconst\@
1187 nop
1188- nop
1189-.Lconst\@:
1190 .align 2
1191+.Lconst\@:
1192 .long \subr
1193 .align 1
1194 .Lafterconst\@:
1195Index: gdb-7.4/gdb/testsuite/gdb.asm/asm-source.exp
1196===================================================================
1197--- gdb-7.4.orig/gdb/testsuite/gdb.asm/asm-source.exp 2012-04-24 07:06:35.009317179 -0700
1198+++ gdb-7.4/gdb/testsuite/gdb.asm/asm-source.exp 2012-04-24 07:09:14.369324886 -0700
1199@@ -110,6 +110,11 @@
1200 append link-flags " -m elf32ppc"
1201 }
1202 }
1203+ "sh*-linux*" {
1204+ set asm-arch sh-linux
1205+ set asm-flags "-I${srcdir}/${subdir} -I${objdir}/${subdir}"
1206+ set debug-flags "-gdwarf-2"
1207+ }
1208 "sh*-*-*" {
1209 set asm-arch sh
1210 set debug-flags "-gdwarf-2"
1211Index: gdb-7.4/gdb/testsuite/gdb.base/sigall.c
1212===================================================================
1213--- gdb-7.4.orig/gdb/testsuite/gdb.base/sigall.c 2012-04-24 07:06:35.037317176 -0700
1214+++ gdb-7.4/gdb/testsuite/gdb.base/sigall.c 2012-04-24 07:09:14.369324886 -0700
1215@@ -1,9 +1,9 @@
1216 #include <signal.h>
1217 #include <unistd.h>
1218
1219-#ifdef __sh__
1220-#define signal(a,b) /* Signals not supported on this target - make them go away */
1221-#endif
1222+
1223+
1224+
1225
1226 /* Signal handlers, we set breakpoints in them to make sure that the
1227 signals really get delivered. */
1228Index: gdb-7.4/gdb/testsuite/gdb.base/signals.c
1229===================================================================
1230--- gdb-7.4.orig/gdb/testsuite/gdb.base/signals.c 2012-04-24 07:06:35.049317176 -0700
1231+++ gdb-7.4/gdb/testsuite/gdb.base/signals.c 2012-04-24 07:09:14.373324884 -0700
1232@@ -3,10 +3,10 @@
1233 #include <signal.h>
1234 #include <unistd.h>
1235
1236-#ifdef __sh__
1237-#define signal(a,b) /* Signals not supported on this target - make them go away */
1238-#define alarm(a) /* Ditto for alarm() */
1239-#endif
1240+
1241+
1242+
1243+
1244
1245 static int count = 0;
1246
1247Index: gdb-7.4/gdb/testsuite/gdb.base/annota1.c
1248===================================================================
1249--- gdb-7.4.orig/gdb/testsuite/gdb.base/annota1.c 2012-04-24 07:06:35.021317172 -0700
1250+++ gdb-7.4/gdb/testsuite/gdb.base/annota1.c 2012-04-24 07:09:14.373324884 -0700
1251@@ -1,9 +1,9 @@
1252 #include <stdio.h>
1253 #include <signal.h>
1254
1255-#ifdef __sh__
1256-#define signal(a,b) /* Signals not supported on this target - make them go away */
1257-#endif
1258+
1259+
1260+
1261
1262
1263 #ifdef PROTOTYPES
1264Index: gdb-7.4/gdb/testsuite/gdb.base/annota3.c
1265===================================================================
1266--- gdb-7.4.orig/gdb/testsuite/gdb.base/annota3.c 2012-04-24 07:06:35.029317176 -0700
1267+++ gdb-7.4/gdb/testsuite/gdb.base/annota3.c 2012-04-24 07:09:14.373324884 -0700
1268@@ -1,9 +1,9 @@
1269 #include <stdio.h>
1270 #include <signal.h>
1271
1272-#ifdef __sh__
1273-#define signal(a,b) /* Signals not supported on this target - make them go away */
1274-#endif
1275+
1276+
1277+
1278
1279
1280 #ifdef PROTOTYPES
1281Index: gdb-7.4/gdb/config/sh/xm-linux.h
1282===================================================================
1283--- /dev/null 1970-01-01 00:00:00.000000000 +0000
1284+++ gdb-7.4/gdb/config/sh/xm-linux.h 2012-04-24 07:09:14.373324884 -0700
1285@@ -0,0 +1,32 @@
1286+/* Native support for GNU/Linux, for GDB, the GNU debugger.
1287+ Copyright (C) 2000 Free Software Foundation, Inc.
1288+
1289+This file is part of GDB.
1290+
1291+This program is free software; you can redistribute it and/or modify
1292+it under the terms of the GNU General Public License as published by
1293+the Free Software Foundation; either version 2 of the License, or
1294+(at your option) any later version.
1295+
1296+This program is distributed in the hope that it will be useful,
1297+but WITHOUT ANY WARRANTY; without even the implied warranty of
1298+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1299+GNU General Public License for more details.
1300+
1301+You should have received a copy of the GNU General Public License
1302+along with this program; if not, write to the Free Software
1303+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
1304+
1305+#ifndef XM_LINUX_H
1306+#define XM_LINUX_H
1307+
1308+#define HOST_BYTE_ORDER LITTLE_ENDIAN
1309+
1310+#define HAVE_TERMIOS
1311+
1312+#define NEED_POSIX_SETPGID
1313+
1314+/* Need R_OK etc, but USG isn't defined. */
1315+#include <unistd.h>
1316+
1317+#endif /* #ifndef XM_LINUX_H */
1318Index: gdb-7.4/gdb/config/sh/nm-linux.h
1319===================================================================
1320--- /dev/null 1970-01-01 00:00:00.000000000 +0000
1321+++ gdb-7.4/gdb/config/sh/nm-linux.h 2012-04-24 07:09:14.373324884 -0700
1322@@ -0,0 +1,54 @@
1323+/* Native-dependent definitions for SuperH running Linux, for GDB.
1324+ Copyright 2004 Free Software Foundation, Inc.
1325+
1326+ This file is part of GDB.
1327+
1328+ This program is free software; you can redistribute it and/or modify
1329+ it under the terms of the GNU General Public License as published by
1330+ the Free Software Foundation; either version 2 of the License, or
1331+ (at your option) any later version.
1332+
1333+ This program is distributed in the hope that it will be useful,
1334+ but WITHOUT ANY WARRANTY; without even the implied warranty of
1335+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1336+ GNU General Public License for more details.
1337+
1338+ You should have received a copy of the GNU General Public License
1339+ along with this program; if not, write to the Free Software
1340+ Foundation, Inc., 59 Temple Place - Suite 330,
1341+ Boston, MA 02111-1307, USA. */
1342+
1343+#ifndef NM_LINUX_H
1344+#define NM_LINUX_H
1345+
1346+/* Get generic Linux native definitions. */
1347+#include "config/nm-linux.h"
1348+/* Support for the user area. */
1349+
1350+/* Return the size of the user struct. */
1351+extern int kernel_u_size (void);
1352+#define KERNEL_U_SIZE kernel_u_size()
1353+
1354+/* This is the amount to substract from u.u_ar0 to get the offset in
1355+ the core file of the register values. */
1356+#define KERNEL_U_ADDR 0
1357+
1358+#define U_REGS_OFFSET 0
1359+
1360+extern CORE_ADDR register_u_addr (CORE_ADDR blockend, int regnum);
1361+#define REGISTER_U_ADDR(addr, blockend, regnum) \
1362+ (addr) = register_u_addr (blockend, regnum)
1363+
1364+/* Override copies of {fetch,store}_inferior_registers in `infptrace.c'. */
1365+#define FETCH_INFERIOR_REGISTERS
1366+
1367+/* Nevertheless, define CANNOT_{FETCH,STORE}_REGISTER, because we
1368+ might fall back on the code `infptrace.c' (well a copy of that code
1369+ in `sh-linux-nat.c' for now) and we can access only the
1370+ general-purpose registers in that way. */
1371+extern int cannot_fetch_register (int regno);
1372+extern int cannot_store_register (int regno);
1373+#define CANNOT_FETCH_REGISTER(regno) cannot_fetch_register (regno)
1374+#define CANNOT_STORE_REGISTER(regno) cannot_store_register (regno)
1375+
1376+#endif /* NM_LINUX_H */
1377Index: gdb-7.4/gdb/config/sh/linux.mh
1378===================================================================
1379--- /dev/null 1970-01-01 00:00:00.000000000 +0000
1380+++ gdb-7.4/gdb/config/sh/linux.mh 2012-04-24 07:36:11.709403160 -0700
1381@@ -0,0 +1,8 @@
1382+# Host: Renesas Super-H running GNU/Linux
1383+NAT_FILE= config/sh/nm-linux.h
1384+NATDEPFILES= inf-ptrace.o fork-child.o corelow.o sh-linux-nat.o \
1385+ proc-service.o linux-thread-db.o gcore.o \
1386+ linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o
1387+
1388+NAT_CDEPS = $(srcdir)/proc-service.list
1389+LOADLIBES= -ldl $(RDYNAMIC)
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