/* Target-dependent code for Renesas Super-H, for GDB.
Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
+ 2003, 2004, 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
This file is part of GDB.
#include "doublest.h"
#include "osabi.h"
#include "reggroups.h"
+#include "regset.h"
#include "sh-tdep.h"
/* sh flags */
#include "elf/sh.h"
-#include "elf/dwarf2.h"
+#include "dwarf2.h"
/* registers numbers shared with the simulator */
#include "gdb/sim-sh.h"
#define IS_ADD_IMM_FP(x) (((x) & 0xff00) == 0x7e00)
static CORE_ADDR
-sh_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
+sh_analyze_prologue (struct gdbarch *gdbarch,
+ CORE_ADDR pc, CORE_ADDR current_pc,
struct sh_frame_cache *cache, ULONGEST fpscr)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
ULONGEST inst;
CORE_ADDR opc;
int offset;
cache->uses_fp = 0;
for (opc = pc + (2 * 28); pc < opc; pc += 2)
{
- inst = read_memory_unsigned_integer (pc, 2);
+ inst = read_memory_unsigned_integer (pc, 2, byte_order);
/* See where the registers will be saved to */
if (IS_PUSH (inst))
{
sav_reg = reg;
offset = (inst & 0xff) << 1;
sav_offset =
- read_memory_integer ((pc + 4) + offset, 2);
+ read_memory_integer ((pc + 4) + offset, 2, byte_order);
}
}
}
sav_reg = reg;
offset = (inst & 0xff) << 2;
sav_offset =
- read_memory_integer (((pc & 0xfffffffc) + 4) + offset, 4);
+ read_memory_integer (((pc & 0xfffffffc) + 4) + offset,
+ 4, byte_order);
}
}
}
sav_offset = GET_SOURCE_REG (inst) << 16;
/* MOVI20 is a 32 bit instruction! */
pc += 2;
- sav_offset |= read_memory_unsigned_integer (pc, 2);
+ sav_offset
+ |= read_memory_unsigned_integer (pc, 2, byte_order);
/* Now sav_offset contains an unsigned 20 bit value.
It must still get sign extended. */
if (sav_offset & 0x00080000)
pc += 2;
for (opc = pc + 12; pc < opc; pc += 2)
{
- inst = read_memory_integer (pc, 2);
+ inst = read_memory_integer (pc, 2, byte_order);
if (IS_MOV_ARG_TO_IND_R14 (inst))
{
reg = GET_SOURCE_REG (inst);
jsr, which will be very confusing. Most likely the next
instruction is going to be IS_MOV_SP_FP in the delay slot. If
so, note that before returning the current pc. */
- inst = read_memory_integer (pc + 2, 2);
+ inst = read_memory_integer (pc + 2, 2, byte_order);
if (IS_MOV_SP_FP (inst))
cache->uses_fp = 1;
break;
return max (pc, start_pc);
cache.sp_offset = -4;
- pc = sh_analyze_prologue (start_pc, (CORE_ADDR) -1, &cache, 0);
+ pc = sh_analyze_prologue (gdbarch, start_pc, (CORE_ADDR) -1, &cache, 0);
if (!cache.uses_fp)
return start_pc;
CORE_ADDR sp, int struct_return,
CORE_ADDR struct_addr)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int stack_offset = 0;
int argreg = ARG0_REGNUM;
int flt_argreg = 0;
{
/* Argument goes in a float argument register. */
reg_size = register_size (gdbarch, flt_argreg);
- regval = extract_unsigned_integer (val, reg_size);
+ regval = extract_unsigned_integer (val, reg_size, byte_order);
/* In little endian mode, float types taking two registers
(doubles on sh4, long doubles on sh2e, sh3e and sh4) must
be stored swapped in the argument registers. The below
regval);
val += reg_size;
len -= reg_size;
- regval = extract_unsigned_integer (val, reg_size);
+ regval = extract_unsigned_integer (val, reg_size, byte_order);
}
regcache_cooked_write_unsigned (regcache, flt_argreg++, regval);
}
{
/* there's room in a register */
reg_size = register_size (gdbarch, argreg);
- regval = extract_unsigned_integer (val, reg_size);
+ regval = extract_unsigned_integer (val, reg_size, byte_order);
regcache_cooked_write_unsigned (regcache, argreg++, regval);
}
/* Store the value one register at a time or in one step on stack. */
if (sh_is_renesas_calling_convention (func_type))
/* If the function uses the Renesas ABI, subtract another 4 bytes from
the stack and store the struct return address there. */
- write_memory_unsigned_integer (sp -= 4, 4, struct_addr);
+ write_memory_unsigned_integer (sp -= 4, 4, byte_order, struct_addr);
else
/* Using the gcc ABI, the "struct return pointer" pseudo-argument has
its own dedicated register. */
CORE_ADDR sp, int struct_return,
CORE_ADDR struct_addr)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int stack_offset = 0;
int argreg = ARG0_REGNUM;
int argnum;
{
/* there's room in a register */
reg_size = register_size (gdbarch, argreg);
- regval = extract_unsigned_integer (val, reg_size);
+ regval = extract_unsigned_integer (val, reg_size, byte_order);
regcache_cooked_write_unsigned (regcache, argreg++, regval);
}
/* Store the value reg_size bytes at a time. This means that things
if (sh_is_renesas_calling_convention (func_type))
/* If the function uses the Renesas ABI, subtract another 4 bytes from
the stack and store the struct return address there. */
- write_memory_unsigned_integer (sp -= 4, 4, struct_addr);
+ write_memory_unsigned_integer (sp -= 4, 4, byte_order, struct_addr);
else
/* Using the gcc ABI, the "struct return pointer" pseudo-argument has
its own dedicated register. */
sh_extract_return_value_nofpu (struct type *type, struct regcache *regcache,
void *valbuf)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int len = TYPE_LENGTH (type);
int return_register = R0_REGNUM;
int offset;
ULONGEST c;
regcache_cooked_read_unsigned (regcache, R0_REGNUM, &c);
- store_unsigned_integer (valbuf, len, c);
+ store_unsigned_integer (valbuf, len, byte_order, c);
}
else if (len == 8)
{
sh_store_return_value_nofpu (struct type *type, struct regcache *regcache,
const void *valbuf)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
ULONGEST val;
int len = TYPE_LENGTH (type);
if (len <= 4)
{
- val = extract_unsigned_integer (valbuf, len);
+ val = extract_unsigned_integer (valbuf, len, byte_order);
regcache_cooked_write_unsigned (regcache, R0_REGNUM, val);
}
else
static struct sh_frame_cache *
sh_frame_cache (struct frame_info *this_frame, void **this_cache)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct sh_frame_cache *cache;
CORE_ADDR current_pc;
int i;
{
ULONGEST fpscr;
fpscr = get_frame_register_unsigned (this_frame, FPSCR_REGNUM);
- sh_analyze_prologue (cache->pc, current_pc, cache, fpscr);
+ sh_analyze_prologue (gdbarch, cache->pc, current_pc, cache, fpscr);
}
if (!cache->uses_fp)
frame by looking at the stack pointer. For truly "frameless"
functions this might work too. */
cache->base = get_frame_register_unsigned
- (this_frame,
- gdbarch_sp_regnum (get_frame_arch (this_frame)));
+ (this_frame, gdbarch_sp_regnum (gdbarch));
}
/* Now that we have the base address for the stack frame we can
static int
sh_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR func_addr = 0, func_end = 0;
if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
/* First search forward until hitting an rts. */
while (addr < func_end
- && !IS_RTS (read_memory_unsigned_integer (addr, 2)))
+ && !IS_RTS (read_memory_unsigned_integer (addr, 2, byte_order)))
addr += 2;
if (addr >= func_end)
return 0;
/* At this point we should find a mov.l @r15+,r14 instruction,
either before or after the rts. If not, then the function has
probably no "normal" epilogue and we bail out here. */
- inst = read_memory_unsigned_integer (addr - 2, 2);
- if (IS_RESTORE_FP (read_memory_unsigned_integer (addr - 2, 2)))
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
+ if (IS_RESTORE_FP (read_memory_unsigned_integer (addr - 2, 2,
+ byte_order)))
addr -= 2;
- else if (!IS_RESTORE_FP (read_memory_unsigned_integer (addr + 2, 2)))
+ else if (!IS_RESTORE_FP (read_memory_unsigned_integer (addr + 2, 2,
+ byte_order)))
return 0;
- inst = read_memory_unsigned_integer (addr - 2, 2);
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
/* Step over possible lds.l @r15+,macl. */
if (IS_MACL_LDS (inst))
{
addr -= 2;
- inst = read_memory_unsigned_integer (addr - 2, 2);
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
}
/* Step over possible lds.l @r15+,pr. */
if (IS_LDS (inst))
{
addr -= 2;
- inst = read_memory_unsigned_integer (addr - 2, 2);
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
}
/* Step over possible mov r14,r15. */
if (IS_MOV_FP_SP (inst))
{
addr -= 2;
- inst = read_memory_unsigned_integer (addr - 2, 2);
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
}
/* Now check for FP adjustments, using add #imm,r14 or add rX, r14
&& (IS_ADD_REG_TO_FP (inst) || IS_ADD_IMM_FP (inst)))
{
addr -= 2;
- inst = read_memory_unsigned_integer (addr - 2, 2);
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
}
/* On SH2a check if the previous instruction was perhaps a MOVI20.
if ((gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh2a
|| gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh2a_nofpu)
&& addr > func_addr + 6
- && IS_MOVI20 (read_memory_unsigned_integer (addr - 4, 2)))
+ && IS_MOVI20 (read_memory_unsigned_integer (addr - 4, 2,
+ byte_order)))
addr -= 4;
if (pc >= addr)
}
return 0;
}
+
+
+/* Supply register REGNUM from the buffer specified by REGS and LEN
+ in the register set REGSET to register cache REGCACHE.
+ REGTABLE specifies where each register can be found in REGS.
+ If REGNUM is -1, do this for all registers in REGSET. */
+
+void
+sh_corefile_supply_regset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *regs, size_t len)
+{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ const struct sh_corefile_regmap *regmap = (regset == &sh_corefile_gregset
+ ? tdep->core_gregmap
+ : tdep->core_fpregmap);
+ int i;
+
+ for (i = 0; regmap[i].regnum != -1; i++)
+ {
+ if ((regnum == -1 || regnum == regmap[i].regnum)
+ && regmap[i].offset + 4 <= len)
+ regcache_raw_supply (regcache, regmap[i].regnum,
+ (char *)regs + regmap[i].offset);
+ }
+}
+
+/* Collect register REGNUM in the register set REGSET from register cache
+ REGCACHE into the buffer specified by REGS and LEN.
+ REGTABLE specifies where each register can be found in REGS.
+ If REGNUM is -1, do this for all registers in REGSET. */
+
+void
+sh_corefile_collect_regset (const struct regset *regset,
+ const struct regcache *regcache,
+ int regnum, void *regs, size_t len)
+{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ const struct sh_corefile_regmap *regmap = (regset == &sh_corefile_gregset
+ ? tdep->core_gregmap
+ : tdep->core_fpregmap);
+ int i;
+
+ for (i = 0; regmap[i].regnum != -1; i++)
+ {
+ if ((regnum == -1 || regnum == regmap[i].regnum)
+ && regmap[i].offset + 4 <= len)
+ regcache_raw_collect (regcache, regmap[i].regnum,
+ (char *)regs + regmap[i].offset);
+ }
+}
+
+/* The following two regsets have the same contents, so it is tempting to
+ unify them, but they are distiguished by their address, so don't. */
+
+struct regset sh_corefile_gregset =
+{
+ NULL,
+ sh_corefile_supply_regset,
+ sh_corefile_collect_regset
+};
+
+static struct regset sh_corefile_fpregset =
+{
+ NULL,
+ sh_corefile_supply_regset,
+ sh_corefile_collect_regset
+};
+
+static const struct regset *
+sh_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name,
+ size_t sect_size)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ if (tdep->core_gregmap && strcmp (sect_name, ".reg") == 0)
+ return &sh_corefile_gregset;
+
+ if (tdep->core_fpregmap && strcmp (sect_name, ".reg2") == 0)
+ return &sh_corefile_fpregset;
+
+ return NULL;
+}
\f
static struct gdbarch *
sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch *gdbarch;
+ struct gdbarch_tdep *tdep;
sh_show_regs = sh_generic_show_regs;
switch (info.bfd_arch_info->mach)
break;
case bfd_mach_sh3:
+ case bfd_mach_sh3_nommu:
+ case bfd_mach_sh2a_nofpu_or_sh3_nommu:
sh_show_regs = sh3_show_regs;
break;
case bfd_mach_sh3e:
+ case bfd_mach_sh2a_or_sh3e:
sh_show_regs = sh3e_show_regs;
break;
case bfd_mach_sh4:
case bfd_mach_sh4a:
+ case bfd_mach_sh2a_or_sh4:
sh_show_regs = sh4_show_regs;
break;
case bfd_mach_sh4_nofpu:
+ case bfd_mach_sh4_nommu_nofpu:
case bfd_mach_sh4a_nofpu:
+ case bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu:
sh_show_regs = sh4_nofpu_show_regs;
break;
/* None found, create a new architecture from the information
provided. */
- gdbarch = gdbarch_alloc (&info, NULL);
+ tdep = XZALLOC (struct gdbarch_tdep);
+ gdbarch = gdbarch_alloc (&info, tdep);
set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
dwarf2_frame_set_init_reg (gdbarch, sh_dwarf2_frame_init_reg);
+ set_gdbarch_regset_from_core_section (gdbarch, sh_regset_from_core_section);
+
switch (info.bfd_arch_info->mach)
{
case bfd_mach_sh:
case bfd_mach_sh4:
case bfd_mach_sh4a:
+ case bfd_mach_sh2a_or_sh4:
set_gdbarch_register_name (gdbarch, sh_sh4_register_name);
set_gdbarch_register_type (gdbarch, sh_sh4_register_type);
set_gdbarch_fp0_regnum (gdbarch, 25);
case bfd_mach_sh4a_nofpu:
case bfd_mach_sh4_nommu_nofpu:
case bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu:
- case bfd_mach_sh2a_or_sh4:
set_gdbarch_register_name (gdbarch, sh_sh4_nofpu_register_name);
break;