-/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
-
- Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free
- Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-/* MVS Notes:
-
- To get from 1.1 to 1.2, add:
- use_struct_convention
- store_return_value
- extract_return_value
- extract_struct_value_address
-
- Make sure to use regcache. */
-
-/* MVS Notes:
-
- Apparently cannot run without a stub placeholder for unwind_dummy_id.
-*/
-
-/* MVS Notes:
-
- To get from 1.2 to 1.3, add:
- read_pc, write_pc
- frame_unwind_init
- struct mn10300_unwind_cache
- unwind_pc
- unwind_dummy_id
- frame_this_id
- frame_prev_register
- frame_sniffer (struct mn10300_frame_unwind)
-*/
-
-#include "defs.h"
-#include "arch-utils.h"
-#include "dis-asm.h"
-#include "gdbtypes.h"
-#include "regcache.h"
-#include "gdb_string.h"
-#include "gdb_assert.h"
-#include "frame.h"
-#include "frame-unwind.h"
-#include "frame-base.h"
-#include "trad-frame.h"
-#include "symtab.h"
-#include "dwarf2-frame.h"
-#include "regcache.h"
-
-enum {
- E_D0_REGNUM = 0,
- E_D1_REGNUM = 1,
- E_D2_REGNUM = 2,
- E_D3_REGNUM = 3,
- E_A0_REGNUM = 4,
- E_A1_REGNUM = 5,
- E_A2_REGNUM = 6,
- E_A3_REGNUM = 7,
- E_SP_REGNUM = 8,
- E_PC_REGNUM = 9,
- E_MDR_REGNUM = 10,
- E_PSW_REGNUM = 11,
- E_LIR_REGNUM = 12,
- E_LAR_REGNUM = 13,
- E_MDRQ_REGNUM = 14,
- E_E0_REGNUM = 15,
- E_MCRH_REGNUM = 26,
- E_MCRL_REGNUM = 27,
- E_MCVF_REGNUM = 28,
- E_NUM_REGS = 32
-};
-
-
-/* Compute the alignment required by a type. */
-
-static int
-mn10300_type_align (struct type *type)
-{
- int i, align = 1;
-
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_INT:
- case TYPE_CODE_ENUM:
- case TYPE_CODE_SET:
- case TYPE_CODE_RANGE:
- case TYPE_CODE_CHAR:
- case TYPE_CODE_BOOL:
- case TYPE_CODE_FLT:
- case TYPE_CODE_PTR:
- case TYPE_CODE_REF:
- return TYPE_LENGTH (type);
-
- case TYPE_CODE_COMPLEX:
- return TYPE_LENGTH (type) / 2;
-
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- for (i = 0; i < TYPE_NFIELDS (type); i++)
- {
- int falign = mn10300_type_align (TYPE_FIELD_TYPE (type, i));
- while (align < falign)
- align <<= 1;
- }
- return align;
-
- case TYPE_CODE_ARRAY:
- /* HACK! Structures containing arrays, even small ones, are not
- elligible for returning in registers. */
- return 256;
-
- case TYPE_CODE_TYPEDEF:
- return mn10300_type_align (check_typedef (type));
-
- default:
- internal_error (__FILE__, __LINE__, "bad switch");
- }
-}
-
-/* MVS note this is deprecated. */
-/* Should call_function allocate stack space for a struct return? */
-/* gcc_p unused */
-static int
-mn10300_use_struct_convention (int gcc_p, struct type *type)
-{
- /* Structures bigger than a pair of words can't be returned in
- registers. */
- if (TYPE_LENGTH (type) > 8)
- return 1;
-
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- /* Structures with a single field are handled as the field
- itself. */
- if (TYPE_NFIELDS (type) == 1)
- return mn10300_use_struct_convention (gcc_p,
- TYPE_FIELD_TYPE (type, 0));
-
- /* Structures with word or double-word size are passed in memory, as
- long as they require at least word alignment. */
- if (mn10300_type_align (type) >= 4)
- return 0;
-
- return 1;
-
- /* Arrays are addressable, so they're never returned in
- registers. This condition can only hold when the array is
- the only field of a struct or union. */
- case TYPE_CODE_ARRAY:
- return 1;
-
- case TYPE_CODE_TYPEDEF:
- return mn10300_use_struct_convention (gcc_p, check_typedef (type));
-
- default:
- return 0;
- }
-}
-
-/* MVS note this is deprecated. */
-static void
-mn10300_store_return_value (struct type *type,
- struct regcache *regcache, const void *valbuf)
-{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- int len = TYPE_LENGTH (type);
- int reg, regsz;
-
- if (TYPE_CODE (type) == TYPE_CODE_PTR)
- reg = 4;
- else
- reg = 0;
-
- regsz = register_size (gdbarch, reg);
-
- if (len <= regsz)
- regcache_raw_write_part (regcache, reg, 0, len, valbuf);
- else if (len <= 2 * regsz)
- {
- regcache_raw_write (regcache, reg, valbuf);
- gdb_assert (regsz == register_size (gdbarch, reg + 1));
- regcache_raw_write_part (regcache, reg+1, 0,
- len - regsz, (char *) valbuf + regsz);
- }
- else
- internal_error (__FILE__, __LINE__,
- "Cannot store return value %d bytes long.", len);
-}
-
-/* MVS note deprecated. */
-static void
-mn10300_extract_return_value (struct type *type,
- struct regcache *regcache, void *valbuf)
-{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
- char buf[MAX_REGISTER_SIZE];
- int len = TYPE_LENGTH (type);
- int reg, regsz;
-
- if (TYPE_CODE (type) == TYPE_CODE_PTR)
- reg = 4;
- else
- reg = 0;
-
- regsz = register_size (gdbarch, reg);
- if (len <= regsz)
- {
- regcache_raw_read (regcache, reg, buf);
- memcpy (valbuf, buf, len);
- }
- else if (len <= 2 * regsz)
- {
- regcache_raw_read (regcache, reg, buf);
- memcpy (valbuf, buf, regsz);
- gdb_assert (regsz == register_size (gdbarch, reg + 1));
- regcache_raw_read (regcache, reg + 1, buf);
- memcpy ((char *) valbuf + regsz, buf, len - regsz);
- }
- else
- internal_error (__FILE__, __LINE__,
- "Cannot extract return value %d bytes long.", len);
-}
-
-static char *
-register_name (int reg, char **regs, long sizeof_regs)
-{
- if (reg < 0 || reg >= sizeof_regs / sizeof (regs[0]))
- return NULL;
- else
- return regs[reg];
-}
-
-static const char *
-mn10300_generic_register_name (int reg)
-{
- static char *regs[] =
- { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3",
- "sp", "pc", "mdr", "psw", "lir", "lar", "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "fp"
- };
- return register_name (reg, regs, sizeof regs);
-}
-
-
-static const char *
-am33_register_name (int reg)
-{
- static char *regs[] =
- { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3",
- "sp", "pc", "mdr", "psw", "lir", "lar", "",
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "ssp", "msp", "usp", "mcrh", "mcrl", "mcvf", "", "", ""
- };
- return register_name (reg, regs, sizeof regs);
-}
-
-
-static struct type *
-mn10300_register_type (struct gdbarch *gdbarch, int reg)
-{
- return builtin_type_int;
-}
-
-static CORE_ADDR
-mn10300_read_pc (ptid_t ptid)
-{
- return read_register_pid (E_PC_REGNUM, ptid);
-}
-
-static void
-mn10300_write_pc (CORE_ADDR val, ptid_t ptid)
-{
- return write_register_pid (E_PC_REGNUM, val, ptid);
-}
-
-/* The breakpoint instruction must be the same size as the smallest
- instruction in the instruction set.
-
- The Matsushita mn10x00 processors have single byte instructions
- so we need a single byte breakpoint. Matsushita hasn't defined
- one, so we defined it ourselves. */
-
-const static unsigned char *
-mn10300_breakpoint_from_pc (CORE_ADDR *bp_addr, int *bp_size)
-{
- static char breakpoint[] = {0xff};
- *bp_size = 1;
- return breakpoint;
-}
-
-/* Function: skip_prologue
- Return the address of the first inst past the prologue of the function. */
-
-static CORE_ADDR
-mn10300_skip_prologue (CORE_ADDR pc)
-{
- /* FIXME: not implemented. */
- /* First approximation, try simply using scan_prologue_using_sal. */
- return skip_prologue_using_sal (pc);
-}
-
-/* Simple frame_unwind_cache.
- This finds the "extra info" for the frame. */
-static struct trad_frame_cache *
-mn10300_frame_unwind_cache (struct frame_info *next_frame,
- void **this_prologue_cache)
-{
- struct trad_frame_cache *cache;
-
- if (*this_prologue_cache)
- return (*this_prologue_cache);
-
- cache = trad_frame_cache_zalloc (next_frame);
- trad_frame_set_id (cache,
- frame_id_build (gdbarch_unwind_sp (current_gdbarch,
- next_frame),
- gdbarch_unwind_pc (current_gdbarch,
- next_frame)));
-
- /* FIXME: The SP isn't the frame base, so this is 0th approximation. */
- /* FIXME: The A3 reg isn't always the frame register either, so this
- is 1st approximation. */
- trad_frame_set_this_base (cache,
- frame_unwind_register_signed (next_frame,
- E_A3_REGNUM));
- (*this_prologue_cache) = cache;
- return cache;
-}
-
-/* Here is a dummy implementation. */
-static struct frame_id
-mn10300_dummy_unwind_dummy_id (struct gdbarch *gdbarch,
- struct frame_info *next_frame)
-{
- return frame_id_build (0, 0);
-}
-
-/* Trad frame implementation. */
-static void
-mn10300_frame_this_id (struct frame_info *next_frame,
- void **this_prologue_cache,
- struct frame_id *this_id)
-{
- struct trad_frame_cache *cache =
- mn10300_frame_unwind_cache (next_frame, this_prologue_cache);
-
- trad_frame_get_id (cache, this_id);
-}
-
-static void
-mn10300_frame_prev_register (struct frame_info *next_frame,
- void **this_prologue_cache,
- int regnum, int *optimizedp,
- enum lval_type *lvalp, CORE_ADDR *addrp,
- int *realnump, void *bufferp)
-{
- struct trad_frame_cache *cache =
- mn10300_frame_unwind_cache (next_frame, this_prologue_cache);
-
- trad_frame_get_register (cache, next_frame, regnum, optimizedp,
- lvalp, addrp, realnump, bufferp);
- /* Or...
- trad_frame_get_prev_register (next_frame, cache->prev_regs, regnum,
- optimizedp, lvalp, addrp, realnump, bufferp);
- */
-}
-
-static const struct frame_unwind mn10300_frame_unwind = {
- NORMAL_FRAME,
- mn10300_frame_this_id,
- mn10300_frame_prev_register
-};
-
-static CORE_ADDR
-mn10300_frame_base_address (struct frame_info *next_frame,
- void **this_prologue_cache)
-{
- struct trad_frame_cache *cache =
- mn10300_frame_unwind_cache (next_frame, this_prologue_cache);
-
- return trad_frame_get_this_base (cache);
-}
-
-static const struct frame_unwind *
-mn10300_frame_sniffer (struct frame_info *next_frame)
-{
- return &mn10300_frame_unwind;
-}
-
-static const struct frame_base mn10300_frame_base = {
- &mn10300_frame_unwind,
- mn10300_frame_base_address,
- mn10300_frame_base_address,
- mn10300_frame_base_address
-};
-
-static CORE_ADDR
-mn10300_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- ULONGEST pc;
-
- frame_unwind_unsigned_register (next_frame, E_PC_REGNUM, &pc);
- return pc;
-}
-
-static CORE_ADDR
-mn10300_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- ULONGEST sp;
-
- frame_unwind_unsigned_register (next_frame, E_SP_REGNUM, &sp);
- return sp;
-}
-
-static void
-mn10300_frame_unwind_init (struct gdbarch *gdbarch)
-{
- frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
- frame_unwind_append_sniffer (gdbarch, mn10300_frame_sniffer);
- frame_base_set_default (gdbarch, &mn10300_frame_base);
- set_gdbarch_unwind_dummy_id (gdbarch, mn10300_dummy_unwind_dummy_id);
- set_gdbarch_unwind_pc (gdbarch, mn10300_unwind_pc);
- set_gdbarch_unwind_sp (gdbarch, mn10300_unwind_sp);
-}
-
-static struct gdbarch *
-mn10300_gdbarch_init (struct gdbarch_info info,
- struct gdbarch_list *arches)
-{
- struct gdbarch *gdbarch;
-
- arches = gdbarch_list_lookup_by_info (arches, &info);
- if (arches != NULL)
- return arches->gdbarch;
- gdbarch = gdbarch_alloc (&info, NULL);
-
- switch (info.bfd_arch_info->mach)
- {
- case 0:
- case bfd_mach_mn10300:
- set_gdbarch_register_name (gdbarch, mn10300_generic_register_name);
- break;
- case bfd_mach_am33:
- set_gdbarch_register_name (gdbarch, am33_register_name);
- break;
- default:
- internal_error (__FILE__, __LINE__,
- "mn10300_gdbarch_init: Unknown mn10300 variant");
- break;
- }
-
- /* Registers. */
- set_gdbarch_num_regs (gdbarch, E_NUM_REGS);
- set_gdbarch_register_type (gdbarch, mn10300_register_type);
- set_gdbarch_skip_prologue (gdbarch, mn10300_skip_prologue);
- set_gdbarch_read_pc (gdbarch, mn10300_read_pc);
- set_gdbarch_write_pc (gdbarch, mn10300_write_pc);
- set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM);
- set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM);
-
- /* Stack unwinding. */
- set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- /* Breakpoints. */
- set_gdbarch_breakpoint_from_pc (gdbarch, mn10300_breakpoint_from_pc);
- /* decr_pc_after_break? */
- /* Disassembly. */
- set_gdbarch_print_insn (gdbarch, print_insn_mn10300);
-
- /* Stage 2 */
- /* MVS Note: at least the first one is deprecated! */
- set_gdbarch_deprecated_use_struct_convention (gdbarch,
- mn10300_use_struct_convention);
- set_gdbarch_store_return_value (gdbarch, mn10300_store_return_value);
- set_gdbarch_extract_return_value (gdbarch, mn10300_extract_return_value);
-
- mn10300_frame_unwind_init (gdbarch);
-
- return gdbarch;
-}
-
-void
-_initialize_mn10300_tdep (void)
-{
- register_gdbarch_init (bfd_arch_mn10300, mn10300_gdbarch_init);
-}
-
+/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.\r
+\r
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free\r
+ Software Foundation, Inc.\r
+\r
+ This file is part of GDB.\r
+\r
+ This program is free software; you can redistribute it and/or modify\r
+ it under the terms of the GNU General Public License as published by\r
+ the Free Software Foundation; either version 2 of the License, or\r
+ (at your option) any later version.\r
+\r
+ This program is distributed in the hope that it will be useful,\r
+ but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ GNU General Public License for more details.\r
+\r
+ You should have received a copy of the GNU General Public License\r
+ along with this program; if not, write to the Free Software\r
+ Foundation, Inc., 59 Temple Place - Suite 330,\r
+ Boston, MA 02111-1307, USA. */\r
+\r
+/* MVS Notes:\r
+\r
+ To get from 1.1 to 1.2, add:\r
+ use_struct_convention\r
+ store_return_value\r
+ extract_return_value\r
+ extract_struct_value_address\r
+ \r
+ Make sure to use regcache. */\r
+\r
+/* MVS Notes:\r
+\r
+ Apparently cannot run without a stub placeholder for unwind_dummy_id. \r
+*/\r
+\r
+/* MVS Notes:\r
+\r
+ To get from 1.2 to 1.3, add:\r
+ read_pc, write_pc\r
+ frame_unwind_init\r
+ struct mn10300_unwind_cache\r
+ unwind_pc\r
+ unwind_dummy_id\r
+ frame_this_id\r
+ frame_prev_register\r
+ frame_sniffer (struct mn10300_frame_unwind)\r
+*/\r
+\r
+#include "defs.h"\r
+#include "arch-utils.h"\r
+#include "dis-asm.h"\r
+#include "gdbtypes.h"\r
+#include "regcache.h"\r
+#include "gdb_string.h"\r
+#include "gdb_assert.h"\r
+#include "frame.h"\r
+#include "frame-unwind.h"\r
+#include "frame-base.h"\r
+#include "trad-frame.h"\r
+#include "symtab.h"\r
+#include "dwarf2-frame.h"\r
+#include "regcache.h"\r
+\r
+#include "mn10300-tdep.h"\r
+\r
+enum {\r
+ E_D0_REGNUM = 0,\r
+ E_D1_REGNUM = 1,\r
+ E_D2_REGNUM = 2,\r
+ E_D3_REGNUM = 3,\r
+ E_A0_REGNUM = 4,\r
+ E_A1_REGNUM = 5,\r
+ E_A2_REGNUM = 6,\r
+ E_A3_REGNUM = 7,\r
+ E_SP_REGNUM = 8,\r
+ E_PC_REGNUM = 9,\r
+ E_MDR_REGNUM = 10,\r
+ E_PSW_REGNUM = 11,\r
+ E_LIR_REGNUM = 12,\r
+ E_LAR_REGNUM = 13,\r
+ E_MDRQ_REGNUM = 14,\r
+ E_E0_REGNUM = 15,\r
+ E_MCRH_REGNUM = 26,\r
+ E_MCRL_REGNUM = 27,\r
+ E_MCVF_REGNUM = 28,\r
+ E_NUM_REGS = 32\r
+};\r
+\r
+\r
+/* Compute the alignment required by a type. */\r
+\r
+static int\r
+mn10300_type_align (struct type *type)\r
+{\r
+ int i, align = 1;\r
+\r
+ switch (TYPE_CODE (type))\r
+ {\r
+ case TYPE_CODE_INT:\r
+ case TYPE_CODE_ENUM:\r
+ case TYPE_CODE_SET:\r
+ case TYPE_CODE_RANGE:\r
+ case TYPE_CODE_CHAR:\r
+ case TYPE_CODE_BOOL:\r
+ case TYPE_CODE_FLT:\r
+ case TYPE_CODE_PTR:\r
+ case TYPE_CODE_REF:\r
+ return TYPE_LENGTH (type);\r
+\r
+ case TYPE_CODE_COMPLEX:\r
+ return TYPE_LENGTH (type) / 2;\r
+\r
+ case TYPE_CODE_STRUCT:\r
+ case TYPE_CODE_UNION:\r
+ for (i = 0; i < TYPE_NFIELDS (type); i++)\r
+ {\r
+ int falign = mn10300_type_align (TYPE_FIELD_TYPE (type, i));\r
+ while (align < falign)\r
+ align <<= 1;\r
+ }\r
+ return align;\r
+\r
+ case TYPE_CODE_ARRAY:\r
+ /* HACK! Structures containing arrays, even small ones, are not\r
+ elligible for returning in registers. */\r
+ return 256;\r
+\r
+ case TYPE_CODE_TYPEDEF:\r
+ return mn10300_type_align (check_typedef (type));\r
+\r
+ default:\r
+ internal_error (__FILE__, __LINE__, "bad switch");\r
+ }\r
+}\r
+\r
+/* MVS note this is deprecated. */\r
+/* Should call_function allocate stack space for a struct return? */\r
+/* gcc_p unused */\r
+static int\r
+mn10300_use_struct_convention (int gcc_p, struct type *type)\r
+{\r
+ /* Structures bigger than a pair of words can't be returned in\r
+ registers. */\r
+ if (TYPE_LENGTH (type) > 8)\r
+ return 1;\r
+\r
+ switch (TYPE_CODE (type))\r
+ {\r
+ case TYPE_CODE_STRUCT:\r
+ case TYPE_CODE_UNION:\r
+ /* Structures with a single field are handled as the field\r
+ itself. */\r
+ if (TYPE_NFIELDS (type) == 1)\r
+ return mn10300_use_struct_convention (gcc_p, \r
+ TYPE_FIELD_TYPE (type, 0));\r
+\r
+ /* Structures with word or double-word size are passed in memory, as\r
+ long as they require at least word alignment. */\r
+ if (mn10300_type_align (type) >= 4)\r
+ return 0;\r
+\r
+ return 1;\r
+\r
+ /* Arrays are addressable, so they're never returned in\r
+ registers. This condition can only hold when the array is\r
+ the only field of a struct or union. */\r
+ case TYPE_CODE_ARRAY:\r
+ return 1;\r
+\r
+ case TYPE_CODE_TYPEDEF:\r
+ return mn10300_use_struct_convention (gcc_p, check_typedef (type));\r
+\r
+ default:\r
+ return 0;\r
+ }\r
+}\r
+\r
+/* MVS note this is deprecated. */\r
+static void\r
+mn10300_store_return_value (struct type *type,\r
+ struct regcache *regcache, const void *valbuf)\r
+{\r
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);\r
+ int len = TYPE_LENGTH (type);\r
+ int reg, regsz;\r
+ \r
+ if (TYPE_CODE (type) == TYPE_CODE_PTR)\r
+ reg = 4;\r
+ else\r
+ reg = 0;\r
+\r
+ regsz = register_size (gdbarch, reg);\r
+\r
+ if (len <= regsz)\r
+ regcache_raw_write_part (regcache, reg, 0, len, valbuf);\r
+ else if (len <= 2 * regsz)\r
+ {\r
+ regcache_raw_write (regcache, reg, valbuf);\r
+ gdb_assert (regsz == register_size (gdbarch, reg + 1));\r
+ regcache_raw_write_part (regcache, reg+1, 0,\r
+ len - regsz, (char *) valbuf + regsz);\r
+ }\r
+ else\r
+ internal_error (__FILE__, __LINE__,\r
+ "Cannot store return value %d bytes long.", len);\r
+}\r
+\r
+/* MVS note deprecated. */\r
+static void\r
+mn10300_extract_return_value (struct type *type,\r
+ struct regcache *regcache, void *valbuf)\r
+{\r
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);\r
+ char buf[MAX_REGISTER_SIZE];\r
+ int len = TYPE_LENGTH (type);\r
+ int reg, regsz;\r
+\r
+ if (TYPE_CODE (type) == TYPE_CODE_PTR)\r
+ reg = 4;\r
+ else\r
+ reg = 0;\r
+\r
+ regsz = register_size (gdbarch, reg);\r
+ if (len <= regsz)\r
+ {\r
+ regcache_raw_read (regcache, reg, buf);\r
+ memcpy (valbuf, buf, len);\r
+ }\r
+ else if (len <= 2 * regsz)\r
+ {\r
+ regcache_raw_read (regcache, reg, buf);\r
+ memcpy (valbuf, buf, regsz);\r
+ gdb_assert (regsz == register_size (gdbarch, reg + 1));\r
+ regcache_raw_read (regcache, reg + 1, buf);\r
+ memcpy ((char *) valbuf + regsz, buf, len - regsz);\r
+ }\r
+ else\r
+ internal_error (__FILE__, __LINE__,\r
+ "Cannot extract return value %d bytes long.", len);\r
+}\r
+\r
+static char *\r
+register_name (int reg, char **regs, long sizeof_regs)\r
+{\r
+ if (reg < 0 || reg >= sizeof_regs / sizeof (regs[0]))\r
+ return NULL;\r
+ else\r
+ return regs[reg];\r
+}\r
+\r
+static const char *\r
+mn10300_generic_register_name (int reg)\r
+{\r
+ static char *regs[] =\r
+ { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3",\r
+ "sp", "pc", "mdr", "psw", "lir", "lar", "", "",\r
+ "", "", "", "", "", "", "", "",\r
+ "", "", "", "", "", "", "", "fp"\r
+ };\r
+ return register_name (reg, regs, sizeof regs);\r
+}\r
+\r
+\r
+static const char *\r
+am33_register_name (int reg)\r
+{\r
+ static char *regs[] =\r
+ { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3",\r
+ "sp", "pc", "mdr", "psw", "lir", "lar", "",\r
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",\r
+ "ssp", "msp", "usp", "mcrh", "mcrl", "mcvf", "", "", ""\r
+ };\r
+ return register_name (reg, regs, sizeof regs);\r
+}\r
+\r
+\r
+static struct type *\r
+mn10300_register_type (struct gdbarch *gdbarch, int reg)\r
+{\r
+ return builtin_type_int;\r
+}\r
+\r
+static CORE_ADDR\r
+mn10300_read_pc (ptid_t ptid)\r
+{\r
+ return read_register_pid (E_PC_REGNUM, ptid);\r
+}\r
+\r
+static void\r
+mn10300_write_pc (CORE_ADDR val, ptid_t ptid)\r
+{\r
+ return write_register_pid (E_PC_REGNUM, val, ptid);\r
+}\r
+\r
+/* The breakpoint instruction must be the same size as the smallest\r
+ instruction in the instruction set.\r
+\r
+ The Matsushita mn10x00 processors have single byte instructions\r
+ so we need a single byte breakpoint. Matsushita hasn't defined\r
+ one, so we defined it ourselves. */\r
+\r
+const static unsigned char *\r
+mn10300_breakpoint_from_pc (CORE_ADDR *bp_addr, int *bp_size)\r
+{\r
+ static char breakpoint[] = {0xff};\r
+ *bp_size = 1;\r
+ return breakpoint;\r
+}\r
+\r
+/* Function: skip_prologue\r
+ Return the address of the first inst past the prologue of the function. */\r
+\r
+static CORE_ADDR\r
+mn10300_skip_prologue (CORE_ADDR pc)\r
+{\r
+ /* FIXME: not implemented. */\r
+ /* First approximation, try simply using skip_prologue_using_sal. */\r
+ return skip_prologue_using_sal (pc);\r
+}\r
+\r
+/* Simple frame_unwind_cache. \r
+ This finds the "extra info" for the frame. */\r
+struct trad_frame_cache *\r
+mn10300_frame_unwind_cache (struct frame_info *next_frame,\r
+ void **this_prologue_cache)\r
+{\r
+ struct trad_frame_cache *cache;\r
+\r
+ if (*this_prologue_cache)\r
+ return (*this_prologue_cache);\r
+\r
+ cache = trad_frame_cache_zalloc (next_frame);\r
+ trad_frame_set_id (cache, \r
+ frame_id_build (gdbarch_unwind_sp (current_gdbarch,\r
+ next_frame),\r
+ gdbarch_unwind_pc (current_gdbarch,\r
+ next_frame)));\r
+\r
+ /* FIXME: The SP isn't the frame base, so this is 0th approximation. */\r
+ /* FIXME: The A3 reg isn't always the frame register either, so this\r
+ is 1st approximation. */\r
+ trad_frame_set_this_base (cache, \r
+ frame_unwind_register_signed (next_frame, \r
+ E_A3_REGNUM));\r
+ (*this_prologue_cache) = cache;\r
+ return cache;\r
+}\r
+\r
+/* Here is a dummy implementation. */\r
+static struct frame_id\r
+mn10300_dummy_unwind_dummy_id (struct gdbarch *gdbarch,\r
+ struct frame_info *next_frame)\r
+{\r
+ return frame_id_build (0, 0);\r
+}\r
+\r
+/* Trad frame implementation. */\r
+static void\r
+mn10300_frame_this_id (struct frame_info *next_frame,\r
+ void **this_prologue_cache,\r
+ struct frame_id *this_id)\r
+{\r
+ struct trad_frame_cache *cache = \r
+ mn10300_frame_unwind_cache (next_frame, this_prologue_cache);\r
+\r
+ trad_frame_get_id (cache, this_id);\r
+}\r
+\r
+static void\r
+mn10300_frame_prev_register (struct frame_info *next_frame,\r
+ void **this_prologue_cache,\r
+ int regnum, int *optimizedp,\r
+ enum lval_type *lvalp, CORE_ADDR *addrp,\r
+ int *realnump, void *bufferp)\r
+{\r
+ struct trad_frame_cache *cache =\r
+ mn10300_frame_unwind_cache (next_frame, this_prologue_cache);\r
+\r
+ trad_frame_get_register (cache, next_frame, regnum, optimizedp, \r
+ lvalp, addrp, realnump, bufferp);\r
+ /* Or...\r
+ trad_frame_get_prev_register (next_frame, cache->prev_regs, regnum, \r
+ optimizedp, lvalp, addrp, realnump, bufferp);\r
+ */\r
+}\r
+\r
+static const struct frame_unwind mn10300_frame_unwind = {\r
+ NORMAL_FRAME,\r
+ mn10300_frame_this_id, \r
+ mn10300_frame_prev_register\r
+};\r
+\r
+static CORE_ADDR\r
+mn10300_frame_base_address (struct frame_info *next_frame,\r
+ void **this_prologue_cache)\r
+{\r
+ struct trad_frame_cache *cache = \r
+ mn10300_frame_unwind_cache (next_frame, this_prologue_cache);\r
+\r
+ return trad_frame_get_this_base (cache);\r
+}\r
+\r
+static const struct frame_unwind *\r
+mn10300_frame_sniffer (struct frame_info *next_frame)\r
+{\r
+ return &mn10300_frame_unwind;\r
+}\r
+\r
+static const struct frame_base mn10300_frame_base = {\r
+ &mn10300_frame_unwind, \r
+ mn10300_frame_base_address, \r
+ mn10300_frame_base_address,\r
+ mn10300_frame_base_address\r
+};\r
+\r
+static CORE_ADDR\r
+mn10300_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)\r
+{\r
+ ULONGEST pc;\r
+\r
+ frame_unwind_unsigned_register (next_frame, E_PC_REGNUM, &pc);\r
+ return pc;\r
+}\r
+\r
+static CORE_ADDR\r
+mn10300_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)\r
+{\r
+ ULONGEST sp;\r
+\r
+ frame_unwind_unsigned_register (next_frame, E_SP_REGNUM, &sp);\r
+ return sp;\r
+}\r
+\r
+static void\r
+mn10300_frame_unwind_init (struct gdbarch *gdbarch)\r
+{\r
+ frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);\r
+ frame_unwind_append_sniffer (gdbarch, mn10300_frame_sniffer);\r
+ frame_base_set_default (gdbarch, &mn10300_frame_base);\r
+ set_gdbarch_unwind_dummy_id (gdbarch, mn10300_dummy_unwind_dummy_id);\r
+ set_gdbarch_unwind_pc (gdbarch, mn10300_unwind_pc);\r
+ set_gdbarch_unwind_sp (gdbarch, mn10300_unwind_sp);\r
+}\r
+\r
+/* Dump out the mn10300 specific architecture information. */\r
+\r
+static void\r
+mn10300_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)\r
+{\r
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);\r
+ fprintf_unfiltered (file, "mn10300_dump_tdep: am33_mode = %d\n",\r
+ tdep->am33_mode);\r
+}\r
+\r
+static struct gdbarch *\r
+mn10300_gdbarch_init (struct gdbarch_info info,\r
+ struct gdbarch_list *arches)\r
+{\r
+ struct gdbarch *gdbarch;\r
+ struct gdbarch_tdep *tdep;\r
+\r
+ arches = gdbarch_list_lookup_by_info (arches, &info);\r
+ if (arches != NULL)\r
+ return arches->gdbarch;\r
+\r
+ tdep = xmalloc (sizeof (struct gdbarch_tdep));\r
+ gdbarch = gdbarch_alloc (&info, tdep);\r
+\r
+ switch (info.bfd_arch_info->mach)\r
+ {\r
+ case 0:\r
+ case bfd_mach_mn10300:\r
+ set_gdbarch_register_name (gdbarch, mn10300_generic_register_name);\r
+ tdep->am33_mode = 0;\r
+ break;\r
+ case bfd_mach_am33:\r
+ set_gdbarch_register_name (gdbarch, am33_register_name);\r
+ tdep->am33_mode = 1;\r
+ break;\r
+ default:\r
+ internal_error (__FILE__, __LINE__,\r
+ "mn10300_gdbarch_init: Unknown mn10300 variant");\r
+ break;\r
+ }\r
+\r
+ /* Registers. */\r
+ set_gdbarch_num_regs (gdbarch, E_NUM_REGS);\r
+ set_gdbarch_register_type (gdbarch, mn10300_register_type);\r
+ set_gdbarch_skip_prologue (gdbarch, mn10300_skip_prologue);\r
+ set_gdbarch_read_pc (gdbarch, mn10300_read_pc);\r
+ set_gdbarch_write_pc (gdbarch, mn10300_write_pc);\r
+ set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM);\r
+ set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM);\r
+\r
+ /* Stack unwinding. */\r
+ set_gdbarch_inner_than (gdbarch, core_addr_lessthan);\r
+ /* Breakpoints. */\r
+ set_gdbarch_breakpoint_from_pc (gdbarch, mn10300_breakpoint_from_pc);\r
+ /* decr_pc_after_break? */\r
+ /* Disassembly. */\r
+ set_gdbarch_print_insn (gdbarch, print_insn_mn10300);\r
+\r
+ /* Stage 2 */\r
+ /* MVS Note: at least the first one is deprecated! */\r
+ set_gdbarch_deprecated_use_struct_convention (gdbarch, \r
+ mn10300_use_struct_convention);\r
+ set_gdbarch_store_return_value (gdbarch, mn10300_store_return_value);\r
+ set_gdbarch_extract_return_value (gdbarch, mn10300_extract_return_value);\r
+\r
+ mn10300_frame_unwind_init (gdbarch);\r
+\r
+ return gdbarch;\r
+}\r
+ \r
+void\r
+_initialize_mn10300_tdep (void)\r
+{\r
+ gdbarch_register (bfd_arch_mn10300, mn10300_gdbarch_init, mn10300_dump_tdep);\r
+}\r
+\r
projects / deliverable / binutils-gdb.git / blobdiff