/* Target-dependent code for the Tilera TILE-Gx processor.
- Copyright (C) 2012-2013 Free Software Foundation, Inc.
+ Copyright (C) 2012-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "frame.h"
#include "frame-base.h"
#include "frame-unwind.h"
-#include "dwarf2-frame.h"
+#include "dwarf2/frame.h"
#include "trad-frame.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "value.h"
#include "dis-asm.h"
#include "inferior.h"
-#include "gdb_string.h"
-#include "gdb_assert.h"
#include "arch-utils.h"
-#include "floatformat.h"
#include "regcache.h"
#include "regset.h"
-#include "doublest.h"
#include "osabi.h"
#include "linux-tdep.h"
#include "objfiles.h"
#include "solib-svr4.h"
-#include "symtab.h"
#include "tilegx-tdep.h"
#include "opcode/tilegx.h"
+#include <algorithm>
+#include "gdbsupport/byte-vector.h"
struct tilegx_frame_cache
{
static int
tilegx_type_is_scalar (struct type *t)
{
- return (TYPE_CODE(t) != TYPE_CODE_STRUCT
- && TYPE_CODE(t) != TYPE_CODE_UNION
- && TYPE_CODE(t) != TYPE_CODE_ARRAY);
+ return (t->code () != TYPE_CODE_STRUCT
+ && t->code () != TYPE_CODE_UNION
+ && t->code () != TYPE_CODE_ARRAY);
}
/* Returns non-zero if the given struct type will be returned using
int i, regnum = TILEGX_R0_REGNUM;
for (i = 0; i < len; i += tilegx_reg_size)
- regcache_raw_read (regcache, regnum++, valbuf + i);
+ regcache->raw_read (regnum++, valbuf + i);
}
/* Copy the function return value from VALBUF into the proper
gdb_byte buf[tilegx_reg_size] = { 0 };
memcpy (buf, valbuf, TYPE_LENGTH (type));
- regcache_raw_write (regcache, TILEGX_R0_REGNUM, buf);
+ regcache->raw_write (TILEGX_R0_REGNUM, buf);
}
else
{
int i, regnum = TILEGX_R0_REGNUM;
for (i = 0; i < len; i += tilegx_reg_size)
- regcache_raw_write (regcache, regnum++, (gdb_byte *) valbuf + i);
+ regcache->raw_write (regnum++, (gdb_byte *) valbuf + i);
}
}
struct regcache *regcache,
CORE_ADDR bp_addr, int nargs,
struct value **args,
- CORE_ADDR sp, int struct_return,
+ CORE_ADDR sp, function_call_return_method return_method,
CORE_ADDR struct_addr)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR stack_dest = sp;
int argreg = TILEGX_R0_REGNUM;
int i, j;
- int typelen, slacklen, alignlen;
+ int typelen, slacklen;
static const gdb_byte four_zero_words[16] = { 0 };
/* If struct_return is 1, then the struct return address will
consume one argument-passing register. */
- if (struct_return)
+ if (return_method == return_method_struct)
regcache_cooked_write_unsigned (regcache, argreg++, struct_addr);
/* Arguments are passed in R0 - R9, and as soon as an argument
the stack, word aligned. */
for (j = nargs - 1; j >= i; j--)
{
- gdb_byte *val;
- struct cleanup *back_to;
const gdb_byte *contents = value_contents (args[j]);
typelen = TYPE_LENGTH (value_enclosing_type (args[j]));
slacklen = align_up (typelen, 8) - typelen;
- val = xmalloc (typelen + slacklen);
- back_to = make_cleanup (xfree, val);
- memcpy (val, contents, typelen);
- memset (val + typelen, 0, slacklen);
+ gdb::byte_vector val (typelen + slacklen);
+ memcpy (val.data (), contents, typelen);
+ memset (val.data () + typelen, 0, slacklen);
/* Now write data to the stack. The stack grows downwards. */
stack_dest -= typelen + slacklen;
- write_memory (stack_dest, val, typelen + slacklen);
- do_cleanups (back_to);
+ write_memory (stack_dest, val.data (), typelen + slacklen);
}
/* Add 16 bytes for linkage space to the stack. */
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR next_addr;
CORE_ADDR prolog_end = end_addr;
- ULONGEST inst, inst2;
- LONGEST offset;
- int regnum;
gdb_byte instbuf[32 * TILEGX_BUNDLE_SIZE_IN_BYTES];
CORE_ADDR instbuf_start;
unsigned int instbuf_size;
struct tilegx_reverse_regs
new_reverse_frame[TILEGX_MAX_INSTRUCTIONS_PER_BUNDLE];
int dest_regs[TILEGX_MAX_INSTRUCTIONS_PER_BUNDLE];
- int reverse_frame_valid, prolog_done, branch_seen;
+ int reverse_frame_valid, prolog_done, branch_seen, lr_saved_on_stack_p;
LONGEST prev_sp_value;
int i, j;
prolog_done = 0;
branch_seen = 0;
prev_sp_value = 0;
+ lr_saved_on_stack_p = 0;
/* To cut down on round-trip overhead, we fetch multiple bundles
at once. These variables describe the range of memory we have
if (instbuf_size > size_on_same_page)
instbuf_size = size_on_same_page;
+
+ instbuf_size = std::min ((CORE_ADDR) instbuf_size,
+ (end_addr - next_addr));
instbuf_start = next_addr;
status = safe_frame_unwind_memory (next_frame, instbuf_start,
instbuf, instbuf_size);
if (status == 0)
- memory_error (status, next_addr);
+ memory_error (TARGET_XFER_E_IO, next_addr);
}
reverse_frame_valid = 0;
for (i = 0; i < num_insns; i++)
{
struct tilegx_decoded_instruction *this_insn = &decoded[i];
- int64_t *operands = (int64_t *) this_insn->operand_values;
+ long long *operands = this_insn->operand_values;
const struct tilegx_opcode *opcode = this_insn->opcode;
switch (opcode->mnemonic)
See trad-frame.h. */
cache->saved_regs[saved_register].realreg = saved_register;
cache->saved_regs[saved_register].addr = saved_address;
- }
+ }
+ else if (cache
+ && (operands[0] == TILEGX_SP_REGNUM)
+ && (operands[1] == TILEGX_LR_REGNUM))
+ lr_saved_on_stack_p = 1;
break;
case TILEGX_OPC_ADDI:
case TILEGX_OPC_ADDLI:
}
}
+ if (lr_saved_on_stack_p)
+ {
+ cache->saved_regs[TILEGX_LR_REGNUM].realreg = TILEGX_LR_REGNUM;
+ cache->saved_regs[TILEGX_LR_REGNUM].addr =
+ cache->saved_regs[TILEGX_SP_REGNUM].addr;
+ }
+
return prolog_end;
}
static CORE_ADDR
tilegx_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
{
- CORE_ADDR func_start;
+ CORE_ADDR func_start, end_pc;
+ struct obj_section *s;
/* This is the preferred method, find the end of the prologue by
using the debugging information. */
= skip_prologue_using_sal (gdbarch, func_start);
if (post_prologue_pc != 0)
- return max (start_pc, post_prologue_pc);
+ return std::max (start_pc, post_prologue_pc);
}
+ /* Don't straddle a section boundary. */
+ s = find_pc_section (start_pc);
+ end_pc = start_pc + 8 * TILEGX_BUNDLE_SIZE_IN_BYTES;
+ if (s != NULL)
+ end_pc = std::min (end_pc, obj_section_endaddr (s));
+
/* Otherwise, try to skip prologue the hard way. */
return tilegx_analyze_prologue (gdbarch,
start_pc,
- start_pc + 8 * TILEGX_BUNDLE_SIZE_IN_BYTES,
+ end_pc,
NULL, NULL);
}
-/* This is the implementation of gdbarch method in_function_epilogue_p. */
+/* This is the implementation of gdbarch method stack_frame_destroyed_p. */
static int
-tilegx_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
+tilegx_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
{
CORE_ADDR func_addr = 0, func_end = 0;
if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
{
- ULONGEST inst, inst2;
CORE_ADDR addr = func_end - TILEGX_BUNDLE_SIZE_IN_BYTES;
/* FIXME: Find the actual epilogue. */
return 0;
}
+/* This is the implementation of gdbarch method get_longjmp_target. */
+
+static int
+tilegx_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
+{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ CORE_ADDR jb_addr;
+ gdb_byte buf[8];
+
+ jb_addr = get_frame_register_unsigned (frame, TILEGX_R0_REGNUM);
+
+ /* TileGX jmp_buf contains 32 elements of type __uint_reg_t which
+ has a size of 8 bytes. The return address is stored in the 25th
+ slot. */
+ if (target_read_memory (jb_addr + 25 * 8, buf, 8))
+ return 0;
+
+ *pc = extract_unsigned_integer (buf, 8, byte_order);
+
+ return 1;
+}
+
/* by assigning the 'faultnum' reg in kernel pt_regs with this value,
kernel do_signal will not check r0. see tilegx kernel/signal.c
for details. */
INT_SWINT_1_SIGRETURN);
}
-/* This is the implementation of gdbarch method breakpoint_from_pc. */
+/* 64-bit pattern for a { bpt ; nop } bundle. */
+constexpr gdb_byte tilegx_break_insn[] =
+ { 0x00, 0x50, 0x48, 0x51, 0xae, 0x44, 0x6a, 0x28 };
-static const unsigned char *
-tilegx_breakpoint_from_pc (struct gdbarch *gdbarch,
- CORE_ADDR *pcptr, int *lenptr)
-{
- /* 64-bit pattern for a { bpt ; nop } bundle. */
- static const unsigned char breakpoint[] =
- { 0x00, 0x50, 0x48, 0x51, 0xae, 0x44, 0x6a, 0x28 };
-
- *lenptr = sizeof (breakpoint);
- return breakpoint;
-}
+typedef BP_MANIPULATION (tilegx_break_insn) tilegx_breakpoint;
/* Normal frames. */
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct tilegx_frame_cache *cache;
CORE_ADDR current_pc;
- int i;
if (*this_cache)
- return *this_cache;
+ return (struct tilegx_frame_cache *) *this_cache;
cache = FRAME_OBSTACK_ZALLOC (struct tilegx_frame_cache);
*this_cache = cache;
cache->base = get_frame_register_unsigned (this_frame, TILEGX_SP_REGNUM);
trad_frame_set_value (cache->saved_regs, TILEGX_SP_REGNUM, cache->base);
- cache->saved_regs[TILEGX_PC_REGNUM] = cache->saved_regs[TILEGX_LR_REGNUM];
if (cache->start_pc)
tilegx_analyze_prologue (gdbarch, cache->start_pc, current_pc,
cache, this_frame);
+ cache->saved_regs[TILEGX_PC_REGNUM] = cache->saved_regs[TILEGX_LR_REGNUM];
+
return cache;
}
tilegx_frame_base_address
};
-static CORE_ADDR
-tilegx_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- return frame_unwind_register_unsigned (next_frame, TILEGX_SP_REGNUM);
-}
-
-static CORE_ADDR
-tilegx_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- return frame_unwind_register_unsigned (next_frame, TILEGX_PC_REGNUM);
-}
-
-static struct frame_id
-tilegx_unwind_dummy_id (struct gdbarch *gdbarch,
- struct frame_info *this_frame)
-{
- CORE_ADDR sp;
-
- sp = get_frame_register_unsigned (this_frame, TILEGX_SP_REGNUM);
- return frame_id_build (sp, get_frame_pc (this_frame));
-}
-
-
/* We cannot read/write the "special" registers. */
static int
set_gdbarch_register_name (gdbarch, tilegx_register_name);
set_gdbarch_register_type (gdbarch, tilegx_register_type);
- set_gdbarch_char_signed (gdbarch, 0);
set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_long_bit (gdbarch, arch_size);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
/* Frame Info. */
- set_gdbarch_unwind_sp (gdbarch, tilegx_unwind_sp);
- set_gdbarch_unwind_pc (gdbarch, tilegx_unwind_pc);
- set_gdbarch_dummy_id (gdbarch, tilegx_unwind_dummy_id);
set_gdbarch_frame_align (gdbarch, tilegx_frame_align);
frame_base_set_default (gdbarch, &tilegx_frame_base);
set_gdbarch_skip_prologue (gdbarch, tilegx_skip_prologue);
- set_gdbarch_in_function_epilogue_p (gdbarch,
- tilegx_in_function_epilogue_p);
+ set_gdbarch_stack_frame_destroyed_p (gdbarch, tilegx_stack_frame_destroyed_p);
/* Map debug registers into internal register numbers. */
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, tilegx_dwarf2_reg_to_regnum);
/* These values and methods are used when gdb calls a target function. */
set_gdbarch_push_dummy_call (gdbarch, tilegx_push_dummy_call);
+ set_gdbarch_get_longjmp_target (gdbarch, tilegx_get_longjmp_target);
set_gdbarch_write_pc (gdbarch, tilegx_write_pc);
- set_gdbarch_breakpoint_from_pc (gdbarch, tilegx_breakpoint_from_pc);
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch,
+ tilegx_breakpoint::kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch,
+ tilegx_breakpoint::bp_from_kind);
set_gdbarch_return_value (gdbarch, tilegx_return_value);
- set_gdbarch_print_insn (gdbarch, print_insn_tilegx);
-
gdbarch_init_osabi (info, gdbarch);
dwarf2_append_unwinders (gdbarch);
return gdbarch;
}
-/* Provide a prototype to silence -Wmissing-prototypes. */
-extern initialize_file_ftype _initialize_tilegx_tdep;
-
+void _initialize_tilegx_tdep ();
void
-_initialize_tilegx_tdep (void)
+_initialize_tilegx_tdep ()
{
register_gdbarch_init (bfd_arch_tilegx, tilegx_gdbarch_init);
}
projects / deliverable / binutils-gdb.git / blobdiff