Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Disassemble the MOVE16 instruction. Also, correct the spelling of

Browse Source 
`unknown' while were here, as suggested.  From Denny Gentry
<denny1@home.com>, PR 3567.
This commit is contained in:
scottr 1997-06-19 17:39:38 +00:00
parent c6bccee655
commit ecc68fd60f
1 changed files with 52 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
sys/arch/m68k/m68k/db_disasm.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: db_disasm.c,v 1.19 1996/10/30 08:22:39 is Exp $ */
/* $NetBSD: db_disasm.c,v 1.20 1997/06/19 17:39:38 scottr Exp $ */
/*
* Copyright (c) 1994 Christian E. Hopps
@ -110,6 +110,7 @@ void opcode_1110 __P((dis_buffer_t *, u_short));
void opcode_fpu __P((dis_buffer_t *, u_short));
void opcode_mmu __P((dis_buffer_t *, u_short));
void opcode_mmu040 __P((dis_buffer_t *, u_short));
void opcode_move16 __P((dis_buffer_t *, u_short));
/* subs of groups */
void opcode_movec __P((dis_buffer_t *, u_short));
@ -1327,6 +1328,9 @@ opcode_coproc(dbuf, opc)
case 2:
opcode_mmu040(dbuf, opc);
return;
case 3:
opcode_move16(dbuf, opc);
return;
}
switch (BITFIELD(opc,8,6)) {
case 0:
@ -1344,7 +1348,7 @@ opcode_coproc(dbuf, opc)
case 5:
default:
}
addstr(dbuf, "UKNOWN COPROC OPCODE");
addstr(dbuf, "UNKNOWN COPROC OPCODE");
return;
}
@ -2275,6 +2279,52 @@ opcode_movec(dbuf, opc)
}
}
/*
* disassemble move16 opcode.
*/
void
opcode_move16(dbuf, opc)
dis_buffer_t *dbuf;
u_short opc;
{
u_short ext;
addstr(dbuf, "move16\t");
if (ISBITSET(opc, 5)) {
PRINT_AREG(dbuf, BITFIELD(opc,2,0));
addstr(dbuf, "@+,");
ext = *(dbuf->val + 1);
PRINT_AREG(dbuf, BITFIELD(ext,14,12));
addstr(dbuf, "@+");
dbuf->used++;
} else {
switch (BITFIELD(opc,4,3)) {
case 0:
PRINT_AREG(dbuf, BITFIELD(opc,2,0));
addstr(dbuf, "@+,");
get_immed(dbuf, SIZE_LONG);
break;
case 1:
get_immed(dbuf, SIZE_LONG);
addchar(',');
PRINT_AREG(dbuf, BITFIELD(opc,2,0));
addstr(dbuf, "@+");
break;
case 2:
PRINT_AREG(dbuf, BITFIELD(opc,2,0));
addstr(dbuf, "@,");
get_immed(dbuf, SIZE_LONG);
break;
case 3:
get_immed(dbuf, SIZE_LONG);
addchar(',');
PRINT_AREG(dbuf, BITFIELD(opc,2,0));
addchar('@');
break;
}
}
}
/*
* copy const string 's' into ``dbuf''->casm