From 1c7d6584a7811b7785ae5c1e378f14b5ba0971cf Mon Sep 17 00:00:00 2001 From: takeshi_hoshina Date: Mon, 2 Nov 2020 11:07:33 +0900 Subject: basesystem-jj recipes --- ...d-support-for-Renesas-SH-sh4-architecture.patch | 911 +++++++++++++++++++++ 1 file changed, 911 insertions(+) create mode 100644 external/poky/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch (limited to 'external/poky/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch') diff --git a/external/poky/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch b/external/poky/meta/recipes-devtools/gdb/gdb/0004-Add-support-for-Renesas-SH-sh4-architecture.patch new file mode 100644 index 00000000..fd165d4b --- /dev/null +++ b/external/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 +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 +Bug-Debian: http://bugs.debian.org/576242 + +Upstream-Status: Pending +Signed-off-by: Khem Raj +--- + 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 . */ + + #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 ++#include ++#include ++#include ++#include ++ ++#include ++ ++#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 . */ ++#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 . */ ++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 . */ ++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 . */ ++ ++ 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 + #include + ++#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 + #include + ++#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 + #include + ++#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 + #include + ++#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; + -- cgit 1.2.3-korg