/* Target-dependent code for the Tilera TILE-Gx processor.
- Copyright (C) 2012-2013 Free Software Foundation, Inc.
+ Copyright (C) 2012-2015 Free Software Foundation, Inc.
This file is part of GDB.
#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 "linux-tdep.h"
#include "objfiles.h"
#include "solib-svr4.h"
-#include "symtab.h"
#include "tilegx-tdep.h"
#include "opcode/tilegx.h"
if (instbuf_size > size_on_same_page)
instbuf_size = size_on_same_page;
+
+ instbuf_size = min (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;
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. */
return 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 = 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;
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. */
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_return_value (gdbarch, tilegx_return_value);