Sweden-Number/programs/winedbg/be_ppc.c

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/*
* Debugger Power PC specific functions
*
* Copyright 2000-2003 Marcus Meissner
* 2004 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "debugger.h"
#if defined(__powerpc__)
static unsigned be_ppc_get_addr(HANDLE hThread, const CONTEXT* ctx,
enum be_cpu_addr bca, ADDRESS64* addr)
{
switch (bca)
{
case be_cpu_addr_pc:
return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Iar);
default:
case be_cpu_addr_stack:
case be_cpu_addr_frame:
dbg_printf("not done\n");
}
return FALSE;
}
static unsigned be_ppc_get_register_info(int regno, enum be_cpu_addr* kind)
{
dbg_printf("not done\n");
return FALSE;
}
static void be_ppc_single_step(CONTEXT* ctx, unsigned enable)
{
#ifndef MSR_SE
# define MSR_SE (1<<10)
#endif
if (enable) ctx->Msr |= MSR_SE;
else ctx->Msr &= ~MSR_SE;
}
static void be_ppc_print_context(HANDLE hThread, const CONTEXT* ctx, int all_regs)
{
dbg_printf("Context printing for PPC not done yet\n");
}
static void be_ppc_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
{
}
static struct dbg_internal_var be_ppc_ctx[] =
{
{0, NULL, 0, dbg_itype_none}
};
static unsigned be_ppc_is_step_over_insn(const void* insn)
{
dbg_printf("not done\n");
return FALSE;
}
static unsigned be_ppc_is_function_return(const void* insn)
{
dbg_printf("not done\n");
return FALSE;
}
static unsigned be_ppc_is_break_insn(const void* insn)
{
dbg_printf("not done\n");
return FALSE;
}
static unsigned be_ppc_is_func_call(const void* insn, ADDRESS64* callee)
{
return FALSE;
}
static unsigned be_ppc_is_jump(const void* insn, ADDRESS64* jumpee)
{
return FALSE;
}
static void be_ppc_disasm_one_insn(ADDRESS64* addr, int display)
{
dbg_printf("Disasm NIY\n");
}
static unsigned be_ppc_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
CONTEXT* ctx, enum be_xpoint_type type,
void* addr, unsigned long* val, unsigned size)
{
unsigned long xbp;
SIZE_T sz;
switch (type)
{
case be_xpoint_break:
if (!size) return 0;
if (!pio->read(hProcess, addr, val, 4, &sz) || sz != 4) return 0;
xbp = 0x7d821008; /* 7d 82 10 08 ... in big endian */
if (!pio->write(hProcess, addr, &xbp, 4, &sz) || sz != 4) return 0;
break;
default:
dbg_printf("Unknown/unsupported bp type %c\n", type);
return 0;
}
return 1;
}
static unsigned be_ppc_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
CONTEXT* ctx, enum be_xpoint_type type,
void* addr, unsigned long val, unsigned size)
{
SIZE_T sz;
switch (type)
{
case be_xpoint_break:
if (!size) return 0;
if (!pio->write(hProcess, addr, &val, 4, &sz) || sz == 4) return 0;
break;
default:
dbg_printf("Unknown/unsupported bp type %c\n", type);
return 0;
}
return 1;
}
static unsigned be_ppc_is_watchpoint_set(const CONTEXT* ctx, unsigned idx)
{
dbg_printf("not done\n");
return FALSE;
}
static void be_ppc_clear_watchpoint(CONTEXT* ctx, unsigned idx)
{
dbg_printf("not done\n");
}
static int be_ppc_adjust_pc_for_break(CONTEXT* ctx, BOOL way)
{
dbg_printf("not done\n");
return 0;
}
static int be_ppc_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
unsigned ext_sign, LONGLONG* ret)
{
dbg_printf("not done\n");
return FALSE;
}
static int be_ppc_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
long double* ret)
{
dbg_printf("not done\n");
return FALSE;
}
static int be_ppc_store_integer(const struct dbg_lvalue* lvalue, unsigned size,
unsigned is_signed, LONGLONG val)
{
dbg_printf("be_ppc_store_integer: not done\n");
return FALSE;
}
struct backend_cpu be_ppc =
{
IMAGE_FILE_MACHINE_POWERPC,
4,
be_cpu_linearize,
be_cpu_build_addr,
be_ppc_get_addr,
be_ppc_get_register_info,
be_ppc_single_step,
be_ppc_print_context,
be_ppc_print_segment_info,
be_ppc_ctx,
be_ppc_is_step_over_insn,
be_ppc_is_function_return,
be_ppc_is_break_insn,
be_ppc_is_func_call,
be_ppc_is_jump,
be_ppc_disasm_one_insn,
be_ppc_insert_Xpoint,
be_ppc_remove_Xpoint,
be_ppc_is_watchpoint_set,
be_ppc_clear_watchpoint,
be_ppc_adjust_pc_for_break,
be_ppc_fetch_integer,
be_ppc_fetch_float,
be_ppc_store_integer,
};
#endif