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New dummy function for symbol_at_address_func field of disassemble_info 

structure.
Add code to use this field in v850 disassembly.
This commit is contained in:
Nick Clifton 1997-10-14 23:09:59 +00:00
parent ecf4429f18
commit 3516c09c60
2 changed files with 39 additions and 5 deletions
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9
opcodes/ChangeLog
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@ -1,3 +1,12 @@
Tue Oct 14 16:10:31 1997 Nick Clifton <nickc@cygnus.com>
* v850-dis.c (disassemble): Use new symbol_at_address_func() field
of disassemble_info structure to determine if an overlay address
has a matching symbol in low memory.
* dis-buf.c (generic_symbol_at_address): New (dummy) function for
new symbol_at_address_func field in disassemble_info structure.
Fri Oct 10 16:44:52 1997 Nick Clifton <nickc@cygnus.com>
* v850-opc.c (extract_d22): Use signed arithmatic.

35
opcodes/v850-dis.c
View File

@ -30,7 +30,11 @@ static const char *const v850_reg_names[] =
static const char *const v850_sreg_names[] =
{ "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
"sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
"sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
/* start-sanitize-v850e */
"ctpc", "ctpsw", "dbpc", "dbpsw", "ctbp", "sr21", "sr22", "sr23",
"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
/* end-sanitize-v850e */
"sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23",
"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31" };
@ -175,12 +179,35 @@ disassemble (memaddr, info, insn)
case V850_OPERAND_SRG: info->fprintf_func (info->stream, "%s", v850_sreg_names[value]); break;
case V850_OPERAND_CC: info->fprintf_func (info->stream, "%s", v850_cc_names[value]); break;
case V850_OPERAND_EP: info->fprintf_func (info->stream, "ep"); break;
case V850_OPERAND_DISP: info->print_address_func (value + memaddr, info); break;
default: info->fprintf_func (info->stream, "%d", value); break;
case V850_OPERAND_DISP:
{
bfd_vma addr = value + memaddr;
/* On the v850 the top 8 bits of an address are used by an overlay manager.
Thus it may happen that when we are looking for a symbol to match
against an address with some of its top bits set, the search fails to
turn up an exact match. In this case we try to find an exact match
against a symbol in the lower address space, and if we find one, we
use that address. We only do this for JARL instructions however, as
we do not want to misinterpret branch instructions. */
if (operand->bits == 22)
{
if ( ! info->symbol_at_address_func (addr, info)
&& ((addr & 0xFF000000) != 0)
&& info->symbol_at_address_func (addr & 0x00FFFFFF, info))
{
addr &= 0x00FFFFFF;
}
}
info->print_address_func (addr, info);
break;
}
/* start-sanitize-v850e */
case V850E_PUSH_POP:
{
static int list12_regs[32] = { 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
static int list12_regs[32] = { 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
static int list18_h_regs[32] = { 19, 18, 17, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 30, 31, 29, 28, 23, 22, 21, 20, 27, 26, 25, 24 };
static int list18_l_regs[32] = { 3, 2, 1, -2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 14, 15, 13, 12, 7, 6, 5, 4, 11, 10, 9, 8 };
int * regs;
@ -357,5 +384,3 @@ print_insn_v850 (memaddr, info)
/* Make sure we tell our caller how many bytes we consumed. */
return disassemble (memaddr, info, insn);
}