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* mn10300-dis.c (disassemble, print_insn_mn10300): Corrently 

handle endianness issues for mn10300.
This commit is contained in:
Jeff Law 1996-12-11 17:34:15 +00:00
parent 191c9d73de
commit 77955104ba
1 changed files with 158 additions and 50 deletions
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208
opcodes/mn10300-dis.c
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@ -23,8 +23,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "dis-asm.h"
static void disassemble PARAMS ((bfd_vma, struct disassemble_info *,
unsigned long insn, unsigned long,
unsigned int));
unsigned long insn, unsigned int));
int
print_insn_mn10300 (memaddr, info)
@ -34,7 +33,6 @@ print_insn_mn10300 (memaddr, info)
int status;
bfd_byte buffer[4];
unsigned long insn;
unsigned long extension;
unsigned int consume;
/* First figure out how big the opcode is. */
@ -70,7 +68,6 @@ print_insn_mn10300 (memaddr, info)
|| (insn & 0xfc) == 0xd8
|| (insn & 0xf0) == 0xe0)
{
extension = 0;
consume = 1;
}
@ -104,7 +101,6 @@ print_insn_mn10300 (memaddr, info)
return -1;
}
insn = bfd_getb16 (buffer);
extension = 0;
consume = 2;
}
@ -139,7 +135,6 @@ print_insn_mn10300 (memaddr, info)
return -1;
}
insn |= *(unsigned char *)buffer;
extension = 0;
consume = 3;
}
@ -154,7 +149,6 @@ print_insn_mn10300 (memaddr, info)
return -1;
}
insn = bfd_getb32 (buffer);
extension = 0;
consume = 4;
}
@ -169,14 +163,6 @@ print_insn_mn10300 (memaddr, info)
return -1;
}
insn = bfd_getb32 (buffer);
status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr + 4, info);
return -1;
}
extension = *(unsigned char *) buffer;
consume = 5;
}
@ -192,13 +178,6 @@ print_insn_mn10300 (memaddr, info)
}
insn = bfd_getb32 (buffer);
status = (*info->read_memory_func) (memaddr + 4, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr + 4, info);
return -1;
}
extension = bfd_getb16 (buffer);
consume = 6;
}
@ -213,40 +192,26 @@ print_insn_mn10300 (memaddr, info)
}
insn = bfd_getb32 (buffer);
status = (*info->read_memory_func) (memaddr + 4, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr + 4, info);
return -1;
}
extension = bfd_getb16 (buffer);
extension <<= 8;
status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr + 6, info);
return -1;
}
extension |= *(unsigned char *)buffer;
consume = 7;
}
disassemble (memaddr, info, insn, extension, consume);
disassemble (memaddr, info, insn, consume);
return consume;
}
static void
disassemble (memaddr, info, insn, extension, size)
disassemble (memaddr, info, insn, size)
bfd_vma memaddr;
struct disassemble_info *info;
unsigned long insn;
unsigned long extension;
unsigned int size;
{
struct mn10300_opcode *op = (struct mn10300_opcode *)mn10300_opcodes;
const struct mn10300_operand *operand;
int match = 0;
bfd_byte buffer[4];
unsigned long extension;
int status, match = 0;
/* Find the opcode. */
while (op->name)
@ -270,15 +235,6 @@ disassemble (memaddr, info, insn, extension, size)
else
mysize = 7;
if (op->format == FMT_D1 || op->format == FMT_S1)
extra_shift = 8;
else if (op->format == FMT_D2 || op->format == FMT_D4
|| op->format == FMT_S2 || op->format == FMT_S4
|| op->format == FMT_S6 || op->format == FMT_D5)
extra_shift = 16;
else
extra_shift = 0;
if ((op->mask & insn) == op->opcode
&& size == mysize)
{
@ -286,6 +242,158 @@ disassemble (memaddr, info, insn, extension, size)
unsigned int nocomma;
int paren = 0;
if (op->format == FMT_D1 || op->format == FMT_S1)
extra_shift = 8;
else if (op->format == FMT_D2 || op->format == FMT_D4
|| op->format == FMT_S2 || op->format == FMT_S4
|| op->format == FMT_S6 || op->format == FMT_D5)
extra_shift = 16;
else
extra_shift = 0;
if (size == 1 || size == 2)
{
extension = 0;
}
else if (size == 3
&& (op->format == FMT_D1
|| op->opcode == 0xdf0000
|| op->opcode == 0xde0000))
{
extension = 0;
}
else if (size == 3)
{
insn &= 0xff0000;
status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
insn |= bfd_getl16 (buffer);
extension = 0;
}
else if (size == 4
&& (op->opcode == 0xfaf80000
|| op->opcode == 0xfaf00000
|| op->opcode == 0xfaf40000))
{
extension = 0;
}
else if (size == 4)
{
insn &= 0xffff0000;
status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
insn |= bfd_getl16 (buffer);
extension = 0;
}
else if (size == 5 && op->opcode == 0xdc000000)
{
unsigned long temp;
status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
temp |= bfd_getl32 (buffer);
insn &= 0xff000000;
insn |= (temp & 0xffffff00) >> 8;
extension = temp & 0xff;
}
else if (size == 5)
{
unsigned long temp;
status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
temp |= bfd_getl16 (buffer);
insn &= 0xff0000ff;
insn |= temp << 8;
status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
extension = *(unsigned char *)buffer;
}
else if (size == 6)
{
unsigned long temp;
status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
temp |= bfd_getl32 (buffer);
insn &= 0xffff0000;
insn |= (temp >> 16) & 0xffff;
extension = temp & 0xffff;
}
else if (size == 7 && op->opcode == 0xdd000000)
{
unsigned long temp;
status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
temp |= bfd_getl32 (buffer);
insn &= 0xff000000;
insn |= (temp >> 8) & 0xffffff;
extension = (temp & 0xff) << 16;
status = (*info->read_memory_func) (memaddr + 5, buffer, 2, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
extension |= bfd_getb16 (buffer);
}
else if (size == 7)
{
unsigned long temp;
status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
temp |= bfd_getl32 (buffer);
insn &= 0xffff0000;
insn |= (temp >> 16) & 0xffff;
extension = (temp & 0xffff) << 8;
status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return;
}
extension |= *(unsigned char *)buffer;
}
match = 1;
(*info->fprintf_func) (info->stream, "%s\t", op->name);