/* Target-dependent code for the Fujitsu FR-V, for GDB, the GNU Debugger.
- Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 2002-2020 Free Software Foundation, Inc.
This file is part of GDB.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "gdb_string.h"
#include "inferior.h"
#include "gdbcore.h"
#include "arch-utils.h"
#include "frame-base.h"
#include "trad-frame.h"
#include "dis-asm.h"
-#include "gdb_assert.h"
#include "sim-regno.h"
#include "gdb/sim-frv.h"
#include "opcodes/frv-desc.h" /* for the H_SPR_... enums */
#include "infcall.h"
#include "solib.h"
#include "frv-tdep.h"
-
-extern void _initialize_frv_tdep (void);
+#include "objfiles.h"
struct frv_unwind_cache /* was struct frame_extra_info */
{
int num_hw_breakpoints;
/* Register names. */
- char **register_names;
+ const char **register_names;
};
/* Return the FR-V ABI associated with GDBARCH. */
{
struct gdbarch_tdep *var;
int r;
- char buf[20];
- var = xmalloc (sizeof (*var));
- memset (var, 0, sizeof (*var));
-
+ var = XCNEW (struct gdbarch_tdep);
+
var->frv_abi = FRV_ABI_EABI;
var->num_gprs = 64;
var->num_fprs = 64;
/* By default, don't supply any general-purpose or floating-point
register names. */
var->register_names
- = (char **) xmalloc ((frv_num_regs + frv_num_pseudo_regs)
- * sizeof (char *));
+ = (const char **) xmalloc ((frv_num_regs + frv_num_pseudo_regs)
+ * sizeof (const char *));
for (r = 0; r < frv_num_regs + frv_num_pseudo_regs; r++)
var->register_names[r] = "";
{
char buf[20];
- sprintf (buf, "gr%d", r);
+ xsnprintf (buf, sizeof (buf), "gr%d", r);
var->register_names[first_gpr_regnum + r] = xstrdup (buf);
}
}
{
char buf[20];
- sprintf (buf, "fr%d", r);
+ xsnprintf (buf, sizeof (buf), "fr%d", r);
var->register_names[first_fpr_regnum + r] = xstrdup (buf);
}
}
{
var->frv_abi = FRV_ABI_FDPIC;
var->register_names[fdpic_loadmap_exec_regnum] = xstrdup ("loadmap_exec");
- var->register_names[fdpic_loadmap_interp_regnum] = xstrdup ("loadmap_interp");
+ var->register_names[fdpic_loadmap_interp_regnum]
+ = xstrdup ("loadmap_interp");
}
static void
return builtin_type (gdbarch)->builtin_int32;
}
-static void
-frv_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
+static enum register_status
+frv_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache,
int reg, gdb_byte *buffer)
{
+ enum register_status status;
+
if (reg == iacc0_regnum)
{
- regcache_raw_read (regcache, iacc0h_regnum, buffer);
- regcache_raw_read (regcache, iacc0l_regnum, (bfd_byte *) buffer + 4);
+ status = regcache->raw_read (iacc0h_regnum, buffer);
+ if (status == REG_VALID)
+ status = regcache->raw_read (iacc0l_regnum, (bfd_byte *) buffer + 4);
}
else if (accg0_regnum <= reg && reg <= accg7_regnum)
{
int raw_regnum = accg0123_regnum + (reg - accg0_regnum) / 4;
int byte_num = (reg - accg0_regnum) % 4;
- bfd_byte buf[4];
+ gdb_byte buf[4];
- regcache_raw_read (regcache, raw_regnum, buf);
- memset (buffer, 0, 4);
- /* FR-V is big endian, so put the requested byte in the first byte
- of the buffer allocated to hold the pseudo-register. */
- ((bfd_byte *) buffer)[0] = buf[byte_num];
+ status = regcache->raw_read (raw_regnum, buf);
+ if (status == REG_VALID)
+ {
+ memset (buffer, 0, 4);
+ /* FR-V is big endian, so put the requested byte in the
+ first byte of the buffer allocated to hold the
+ pseudo-register. */
+ buffer[0] = buf[byte_num];
+ }
}
+ else
+ gdb_assert_not_reached ("invalid pseudo register number");
+
+ return status;
}
static void
{
if (reg == iacc0_regnum)
{
- regcache_raw_write (regcache, iacc0h_regnum, buffer);
- regcache_raw_write (regcache, iacc0l_regnum, (bfd_byte *) buffer + 4);
+ regcache->raw_write (iacc0h_regnum, buffer);
+ regcache->raw_write (iacc0l_regnum, (bfd_byte *) buffer + 4);
}
else if (accg0_regnum <= reg && reg <= accg7_regnum)
{
int raw_regnum = accg0123_regnum + (reg - accg0_regnum) / 4;
int byte_num = (reg - accg0_regnum) % 4;
- char buf[4];
+ gdb_byte buf[4];
- regcache_raw_read (regcache, raw_regnum, buf);
+ regcache->raw_read (raw_regnum, buf);
buf[byte_num] = ((bfd_byte *) buffer)[0];
- regcache_raw_write (regcache, raw_regnum, buf);
+ regcache->raw_write (raw_regnum, buf);
}
}
internal_error (__FILE__, __LINE__, _("Bad register number %d"), reg);
}
-static const unsigned char *
-frv_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenp)
-{
- static unsigned char breakpoint[] = {0xc0, 0x70, 0x00, 0x01};
- *lenp = sizeof (breakpoint);
- return breakpoint;
-}
+constexpr gdb_byte frv_break_insn[] = {0xc0, 0x70, 0x00, 0x01};
+
+typedef BP_MANIPULATION (frv_break_insn) frv_breakpoint;
/* Define the maximum number of instructions which may be packed into a
bundle (VLIW instruction). */
/* Find the end of the previous packing sequence. This will be indicated
by either attempting to access some inaccessible memory or by finding
- an instruction word whose packing bit is set to one. */
+ an instruction word whose packing bit is set to one. */
while (count-- > 0 && addr >= func_start)
{
- char instr[frv_instr_size];
+ gdb_byte instr[frv_instr_size];
int status;
status = target_read_memory (addr, instr, sizeof instr);
J - The register number of GRj in the instruction description.
K - The register number of GRk in the instruction description.
I - The register number of GRi.
- S - a signed imediate offset.
+ S - a signed immediate offset.
U - an unsigned immediate offset.
The dots below the numbers indicate where hex digit boundaries
the stack pointer to frame pointer: fp = sp + fp_offset. */
int fp_offset = 0;
- /* Total size of frame prior to any alloca operations. */
+ /* Total size of frame prior to any alloca operations. */
int framesize = 0;
/* Flag indicating if lr has been saved on the stack. */
/* The address of the most recently scanned prologue instruction. */
CORE_ADDR last_prologue_pc;
- /* The address of the next instruction. */
+ /* The address of the next instruction. */
CORE_ADDR next_pc;
/* The upper bound to of the pc values to scan. */
/* Scan the prologue. */
while (pc < lim_pc)
{
- char buf[frv_instr_size];
+ gdb_byte buf[frv_instr_size];
LONGEST op;
if (target_read_memory (pc, buf, sizeof buf) != 0)
/* If LR was saved on the stack, record its location. */
if (lr_saved_on_stack)
- info->saved_regs[lr_regnum].addr = this_base - fp_offset + lr_sp_offset;
+ info->saved_regs[lr_regnum].addr
+ = this_base - fp_offset + lr_sp_offset;
/* The call instruction moves the caller's PC in the callee's LR.
Since this is an unwind, do the reverse. Copy the location of LR
to the call instruction.
Skip over this instruction if present. It won't be present in
- non-PIC code, and even in PIC code, it might not be present.
+ non-PIC code, and even in PIC code, it might not be present.
(This is due to the fact that GR15, the FDPIC register, already
contains the correct value.)
{
LONGEST displ;
CORE_ADDR call_dest;
- struct minimal_symbol *s;
+ struct bound_minimal_symbol s;
displ = ((op & 0xfe000000) >> 7) | (op & 0x0003ffff);
if ((displ & 0x00800000) != 0)
call_dest = pc + 4 * displ;
s = lookup_minimal_symbol_by_pc (call_dest);
- if (s != NULL
- && SYMBOL_LINKAGE_NAME (s) != NULL
- && strcmp (SYMBOL_LINKAGE_NAME (s), "__main") == 0)
+ if (s.minsym != NULL
+ && s.minsym->linkage_name () != NULL
+ && strcmp (s.minsym->linkage_name (), "__main") == 0)
{
pc += 4;
return pc;
void **this_prologue_cache)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
- CORE_ADDR pc;
- ULONGEST this_base;
struct frv_unwind_cache *info;
if ((*this_prologue_cache))
- return (*this_prologue_cache);
+ return (struct frv_unwind_cache *) (*this_prologue_cache);
info = FRAME_OBSTACK_ZALLOC (struct frv_unwind_cache);
(*this_prologue_cache) = info;
frv_extract_return_value (struct type *type, struct regcache *regcache,
gdb_byte *valbuf)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch *gdbarch = regcache->arch ();
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int len = TYPE_LENGTH (type);
else if (len == 8)
{
ULONGEST regval;
+
regcache_cooked_read_unsigned (regcache, 8, ®val);
store_unsigned_integer (valbuf, 4, byte_order, regval);
regcache_cooked_read_unsigned (regcache, 9, ®val);
store_unsigned_integer ((bfd_byte *) valbuf + 4, 4, byte_order, regval);
}
else
- internal_error (__FILE__, __LINE__, _("Illegal return value length: %d"), len);
+ internal_error (__FILE__, __LINE__,
+ _("Illegal return value length: %d"), len);
}
static CORE_ADDR
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR descr;
- char valbuf[4];
+ gdb_byte valbuf[4];
CORE_ADDR start_addr;
/* If we can't find the function in the symbol table, then we assume
frv_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr,
int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+ function_call_return_method return_method,
+ CORE_ADDR struct_addr)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int argreg;
int argnum;
- char *val;
- char valbuf[4];
+ const gdb_byte *val;
+ gdb_byte valbuf[4];
struct value *arg;
struct type *arg_type;
int len;
if (stack_space > 0)
sp -= stack_space;
- /* Make sure stack is dword aligned. */
+ /* Make sure stack is dword aligned. */
sp = align_down (sp, 8);
stack_offset = 0;
argreg = 8;
- if (struct_return)
+ if (return_method == return_method_struct)
regcache_cooked_write_unsigned (regcache, struct_return_regnum,
struct_addr);
arg = args[argnum];
arg_type = check_typedef (value_type (arg));
len = TYPE_LENGTH (arg_type);
- typecode = TYPE_CODE (arg_type);
+ typecode = arg_type->code ();
if (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION)
{
else if (abi == FRV_ABI_FDPIC
&& len == 4
&& typecode == TYPE_CODE_PTR
- && TYPE_CODE (TYPE_TARGET_TYPE (arg_type)) == TYPE_CODE_FUNC)
+ && TYPE_TARGET_TYPE (arg_type)->code () == TYPE_CODE_FUNC)
{
/* The FDPIC ABI requires function descriptors to be passed instead
of entry points. */
}
else
{
- val = (char *) value_contents (arg);
+ val = value_contents (arg);
}
while (len > 0)
{
#if 0
printf(" Argnum %d data %x -> offset %d (%x)\n",
- argnum, *((int *)val), stack_offset, (int) (sp + stack_offset));
+ argnum, *((int *)val), stack_offset,
+ (int) (sp + stack_offset));
#endif
write_memory (sp + stack_offset, val, partial_len);
stack_offset += align_up (partial_len, 4);
bfd_byte val[4];
memset (val, 0, sizeof (val));
memcpy (val + (4 - len), valbuf, len);
- regcache_cooked_write (regcache, 8, val);
+ regcache->cooked_write (8, val);
}
else if (len == 8)
{
- regcache_cooked_write (regcache, 8, valbuf);
- regcache_cooked_write (regcache, 9, (bfd_byte *) valbuf + 4);
+ regcache->cooked_write (8, valbuf);
+ regcache->cooked_write (9, (bfd_byte *) valbuf + 4);
}
else
internal_error (__FILE__, __LINE__,
}
static enum return_value_convention
-frv_return_value (struct gdbarch *gdbarch, struct type *func_type,
+frv_return_value (struct gdbarch *gdbarch, struct value *function,
struct type *valtype, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
- int struct_return = TYPE_CODE (valtype) == TYPE_CODE_STRUCT
- || TYPE_CODE (valtype) == TYPE_CODE_UNION
- || TYPE_CODE (valtype) == TYPE_CODE_ARRAY;
+ int struct_return = valtype->code () == TYPE_CODE_STRUCT
+ || valtype->code () == TYPE_CODE_UNION
+ || valtype->code () == TYPE_CODE_ARRAY;
if (writebuf != NULL)
{
return RETURN_VALUE_REGISTER_CONVENTION;
}
-
-/* Hardware watchpoint / breakpoint support for the FR500
- and FR400. */
-
-int
-frv_check_watch_resources (struct gdbarch *gdbarch, int type, int cnt, int ot)
-{
- struct gdbarch_tdep *var = gdbarch_tdep (gdbarch);
-
- /* Watchpoints not supported on simulator. */
- if (strcmp (target_shortname, "sim") == 0)
- return 0;
-
- if (type == bp_hardware_breakpoint)
- {
- if (var->num_hw_breakpoints == 0)
- return 0;
- else if (cnt <= var->num_hw_breakpoints)
- return 1;
- }
- else
- {
- if (var->num_hw_watchpoints == 0)
- return 0;
- else if (ot)
- return -1;
- else if (cnt <= var->num_hw_watchpoints)
- return 1;
- }
- return -1;
-}
-
-
-int
-frv_stopped_data_address (CORE_ADDR *addr_p)
-{
- struct frame_info *frame = get_current_frame ();
- CORE_ADDR brr, dbar0, dbar1, dbar2, dbar3;
-
- brr = get_frame_register_unsigned (frame, brr_regnum);
- dbar0 = get_frame_register_unsigned (frame, dbar0_regnum);
- dbar1 = get_frame_register_unsigned (frame, dbar1_regnum);
- dbar2 = get_frame_register_unsigned (frame, dbar2_regnum);
- dbar3 = get_frame_register_unsigned (frame, dbar3_regnum);
-
- if (brr & (1<<11))
- *addr_p = dbar0;
- else if (brr & (1<<10))
- *addr_p = dbar1;
- else if (brr & (1<<9))
- *addr_p = dbar2;
- else if (brr & (1<<8))
- *addr_p = dbar3;
- else
- return 0;
-
- return 1;
-}
-
-int
-frv_have_stopped_data_address (void)
-{
- CORE_ADDR addr = 0;
- return frv_stopped_data_address (&addr);
-}
-
-static CORE_ADDR
-frv_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- return frame_unwind_register_unsigned (next_frame, pc_regnum);
-}
-
/* Given a GDB frame, determine the address of the calling function's
frame. This will be used to create a new GDB frame struct. */
= frv_frame_unwind_cache (this_frame, this_prologue_cache);
CORE_ADDR base;
CORE_ADDR func;
- struct minimal_symbol *msym_stack;
+ struct bound_minimal_symbol msym_stack;
struct frame_id id;
/* The FUNC is easy. */
/* Check if the stack is empty. */
msym_stack = lookup_minimal_symbol ("_stack", NULL, NULL);
- if (msym_stack && info->base == SYMBOL_VALUE_ADDRESS (msym_stack))
+ if (msym_stack.minsym && info->base == BMSYMBOL_VALUE_ADDRESS (msym_stack))
return;
/* Hopefully the prologue analysis either correctly determined the
static const struct frame_unwind frv_frame_unwind = {
NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
frv_frame_this_id,
frv_frame_prev_register,
NULL,
frv_frame_base_address
};
-static CORE_ADDR
-frv_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- return frame_unwind_register_unsigned (next_frame, sp_regnum);
-}
-
-
-/* Assuming THIS_FRAME is a dummy, return the frame ID of that dummy
- frame. The frame ID's base needs to match the TOS value saved by
- save_dummy_frame_tos(), and the PC match the dummy frame's breakpoint. */
-
-static struct frame_id
-frv_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
-{
- CORE_ADDR sp = get_frame_register_unsigned (this_frame, sp_regnum);
- return frame_id_build (sp, get_frame_pc (this_frame));
-}
-
static struct gdbarch *
frv_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
{
case bfd_mach_frv:
case bfd_mach_frvsimple:
+ case bfd_mach_fr300:
case bfd_mach_fr500:
case bfd_mach_frvtomcat:
case bfd_mach_fr550:
set_gdbarch_skip_prologue (gdbarch, frv_skip_prologue);
set_gdbarch_skip_main_prologue (gdbarch, frv_skip_main_prologue);
- set_gdbarch_breakpoint_from_pc (gdbarch, frv_breakpoint_from_pc);
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch, frv_breakpoint::kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch, frv_breakpoint::bp_from_kind);
set_gdbarch_adjust_breakpoint_address
(gdbarch, frv_adjust_breakpoint_address);
set_gdbarch_return_value (gdbarch, frv_return_value);
/* Frame stuff. */
- set_gdbarch_unwind_pc (gdbarch, frv_unwind_pc);
- set_gdbarch_unwind_sp (gdbarch, frv_unwind_sp);
set_gdbarch_frame_align (gdbarch, frv_frame_align);
frame_base_set_default (gdbarch, &frv_frame_base);
/* We set the sniffer lower down after the OSABI hooks have been
/* Settings for calling functions in the inferior. */
set_gdbarch_push_dummy_call (gdbarch, frv_push_dummy_call);
- set_gdbarch_dummy_id (gdbarch, frv_dummy_id);
/* Settings that should be unnecessary. */
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
{
case bfd_mach_frv:
case bfd_mach_frvsimple:
+ case bfd_mach_fr300:
case bfd_mach_fr500:
case bfd_mach_frvtomcat:
/* fr500-style hardware debugging support. */
break;
}
- set_gdbarch_print_insn (gdbarch, print_insn_frv);
if (frv_abi (gdbarch) == FRV_ABI_FDPIC)
set_gdbarch_convert_from_func_ptr_addr (gdbarch,
frv_convert_from_func_ptr_addr);
return gdbarch;
}
+void _initialize_frv_tdep ();
void
-_initialize_frv_tdep (void)
+_initialize_frv_tdep ()
{
register_gdbarch_init (bfd_arch_frv, frv_gdbarch_init);
}
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