Sweden-Number/programs/winedbg/be_ppc.c

193 lines
4.9 KiB
C

/*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "debugger.h"
#if defined(__powerpc__)
static unsigned be_ppc_get_addr(HANDLE hThread, const CONTEXT* ctx,
enum be_cpu_addr bca, ADDRESS* 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 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)
{
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 const struct dbg_internal_var* be_ppc_init_registers(CONTEXT* ctx)
{
dbg_printf("not done\n");
return be_ppc_ctx;
}
static unsigned be_ppc_is_step_over_insn(void* insn)
{
dbg_printf("not done\n");
return FALSE;
}
static unsigned be_ppc_is_function_return(void* insn)
{
dbg_printf("not done\n");
return FALSE;
}
static unsigned be_ppc_is_break_insn(void* insn)
{
dbg_printf("not done\n");
return FALSE;
}
static unsigned be_ppc_is_func_call(void* insn, void** insn_callee)
{
return FALSE;
}
static void be_ppc_disasm_one_insn(ADDRESS* addr, int display)
{
dbg_printf("Disasm NIY\n");
}
static unsigned be_ppc_insert_Xpoint(HANDLE hProcess, CONTEXT* ctx,
enum be_xpoint_type type, void* addr,
unsigned long* val, unsigned size)
{
unsigned long xbp;
unsigned long sz;
switch (type)
{
case be_xpoint_break:
if (!size) return 0;
if (!ReadProcessMemory(hProcess, addr, val, 4, &sz) || sz != 4) return 0;
xbp = 0x7d821008; /* 7d 82 10 08 ... in big endian */
if (!WriteProcessMemory(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, CONTEXT* ctx,
enum be_xpoint_type type, void* addr,
unsigned long val, unsigned size)
{
unsigned long sz;
switch (type)
{
case be_xpoint_break:
if (!size) return 0;
if (!WriteProcessMemory(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, long long int* 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;
}
struct backend_cpu be_ppc =
{
be_cpu_linearize,
be_cpu_build_addr,
be_ppc_get_addr,
be_ppc_single_step,
be_ppc_print_context,
be_ppc_print_segment_info,
be_ppc_init_registers,
be_ppc_is_step_over_insn,
be_ppc_is_function_return,
be_ppc_is_break_insn,
be_ppc_is_func_call,
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,
};
#endif