/* Target dependent code for CRIS, for GDB, the GNU debugger.
- Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation,
- Inc.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
+ Free Software Foundation, Inc.
Contributed by Axis Communications AB.
Written by Hendrik Ruijter, Stefan Andersson, and Orjan Friberg.
#include "objfiles.h"
#include "solib.h" /* Support for shared libraries. */
-#include "solib-svr4.h" /* For struct link_map_offsets. */
+#include "solib-svr4.h"
#include "gdb_string.h"
#include "dis-asm.h"
int disable_interrupt;
} inst_env_type;
-/* Save old breakpoints in order to restore the state before a single_step.
- At most, two breakpoints will have to be remembered. */
-typedef
-char binsn_quantum[BREAKPOINT_MAX];
-static binsn_quantum break_mem[2];
-static CORE_ADDR next_pc = 0;
-static CORE_ADDR branch_target_address = 0;
-static unsigned char branch_break_inserted = 0;
-
/* Machine-dependencies in CRIS for opcodes. */
/* Instruction sizes. */
static void
cris_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
- struct dwarf2_frame_state_reg *reg)
+ struct dwarf2_frame_state_reg *reg,
+ struct frame_info *next_frame)
{
/* The return address column. */
if (regnum == PC_REGNUM)
cris_software_single_step (enum target_signal ignore, int insert_breakpoints)
{
inst_env_type inst_env;
-
+
if (insert_breakpoints)
{
/* Analyse the present instruction environment and insert
{
/* Insert at most two breakpoints. One for the next PC content
and possibly another one for a branch, jump, etc. */
- next_pc = (CORE_ADDR) inst_env.reg[PC_REGNUM];
- target_insert_breakpoint (next_pc, break_mem[0]);
+ CORE_ADDR next_pc = (CORE_ADDR) inst_env.reg[PC_REGNUM];
+ insert_single_step_breakpoint (next_pc);
if (inst_env.branch_found
&& (CORE_ADDR) inst_env.branch_break_address != next_pc)
{
- branch_target_address =
- (CORE_ADDR) inst_env.branch_break_address;
- target_insert_breakpoint (branch_target_address, break_mem[1]);
- branch_break_inserted = 1;
+ CORE_ADDR branch_target_address
+ = (CORE_ADDR) inst_env.branch_break_address;
+ insert_single_step_breakpoint (branch_target_address);
}
}
}
else
- {
- /* Remove breakpoints. */
- target_remove_breakpoint (next_pc, break_mem[0]);
- if (branch_break_inserted)
- {
- target_remove_breakpoint (branch_target_address, break_mem[1]);
- branch_break_inserted = 0;
- }
- }
+ remove_single_step_breakpoints ();
}
/* Calculates the prefix value for quick offset addressing mode. */
NULL /* next */
};
-/* Fetch (and possibly build) an appropriate link_map_offsets
- structure for native GNU/Linux CRIS targets using the struct
- offsets defined in link.h (but without actual reference to that
- file).
-
- This makes it possible to access GNU/Linux CRIS shared libraries
- from a GDB that was not built on an GNU/Linux CRIS host (for cross
- debugging).
-
- See gdb/solib-svr4.h for an explanation of these fields. */
-
-static struct link_map_offsets *
-cris_linux_svr4_fetch_link_map_offsets (void)
-{
- static struct link_map_offsets lmo;
- static struct link_map_offsets *lmp = NULL;
-
- if (lmp == NULL)
- {
- lmp = &lmo;
-
- lmo.r_debug_size = 8; /* The actual size is 20 bytes, but
- this is all we need. */
- lmo.r_map_offset = 4;
- lmo.r_map_size = 4;
-
- lmo.link_map_size = 20;
-
- lmo.l_addr_offset = 0;
- lmo.l_addr_size = 4;
-
- lmo.l_name_offset = 4;
- lmo.l_name_size = 4;
-
- lmo.l_next_offset = 12;
- lmo.l_next_size = 4;
-
- lmo.l_prev_offset = 16;
- lmo.l_prev_size = 4;
- }
-
- return lmp;
-}
-
extern initialize_file_ftype _initialize_cris_tdep; /* -Wmissing-prototypes */
void
frame_unwind_append_sniffer (gdbarch, cris_frame_sniffer);
frame_base_set_default (gdbarch, &cris_frame_base);
- /* Use target_specific function to define link map offsets. */
- set_solib_svr4_fetch_link_map_offsets
- (gdbarch, cris_linux_svr4_fetch_link_map_offsets);
+ set_solib_svr4_fetch_link_map_offsets
+ (gdbarch, svr4_ilp32_fetch_link_map_offsets);
/* FIXME: cagney/2003-08-27: It should be possible to select a CRIS
disassembler, even when there is no BFD. Does something like