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Add the assign/x0 and set/x opcodes.

This commit is contained in:
steve 2001-08-26 22:59:32 +00:00
parent e35ed6e91c
commit c29e11ed36
4 changed files with 54 additions and 4 deletions
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7
vvp/codes.h
View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: codes.h,v 1.33 2001/07/22 00:04:50 steve Exp $"
#ident "$Id: codes.h,v 1.34 2001/08/26 22:59:32 steve Exp $"
#endif
@ -40,6 +40,7 @@ extern bool of_AND(vthread_t thr, vvp_code_t code);
extern bool of_ANDR(vthread_t thr, vvp_code_t code);
extern bool of_ASSIGN(vthread_t thr, vvp_code_t code);
extern bool of_ASSIGN_MEM(vthread_t thr, vvp_code_t code);
extern bool of_ASSIGN_X0(vthread_t thr, vvp_code_t code);
extern bool of_BREAKPOINT(vthread_t thr, vvp_code_t code);
extern bool of_CMPS(vthread_t thr, vvp_code_t code);
extern bool of_CMPU(vthread_t thr, vvp_code_t code);
@ -74,6 +75,7 @@ extern bool of_OR(vthread_t thr, vvp_code_t code);
extern bool of_ORR(vthread_t thr, vvp_code_t code);
extern bool of_SET(vthread_t thr, vvp_code_t code);
extern bool of_SET_MEM(vthread_t thr, vvp_code_t code);
extern bool of_SET_X(vthread_t thr, vvp_code_t code);
extern bool of_SHIFTL_I0(vthread_t thr, vvp_code_t code);
extern bool of_SHIFTR_I0(vthread_t thr, vvp_code_t code);
extern bool of_SUB(vthread_t thr, vvp_code_t code);
@ -138,6 +140,9 @@ extern vvp_code_t codespace_index(vvp_cpoint_t ptr);
/*
* $Log: codes.h,v $
* Revision 1.34 2001/08/26 22:59:32 steve
* Add the assign/x0 and set/x opcodes.
*
* Revision 1.33 2001/07/22 00:04:50 steve
* Add the load/x instruction for bit selects.
*

7
vvp/compile.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: compile.cc,v 1.97 2001/08/25 17:22:32 steve Exp $"
#ident "$Id: compile.cc,v 1.98 2001/08/26 22:59:32 steve Exp $"
#endif
# include "arith.h"
@ -81,6 +81,7 @@ const static struct opcode_table_s opcode_table[] = {
{ "%and/r", of_ANDR, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%assign", of_ASSIGN, 3, {OA_FUNC_PTR, OA_BIT1, OA_BIT2} },
{ "%assign/m",of_ASSIGN_MEM,3,{OA_MEM_PTR,OA_BIT1, OA_BIT2} },
{ "%assign/x0",of_ASSIGN_X0,3,{OA_FUNC_PTR,OA_BIT1, OA_BIT2} },
{ "%breakpoint", of_BREAKPOINT, 0, {OA_NONE, OA_NONE, OA_NONE} },
{ "%cmp/s", of_CMPS, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%cmp/u", of_CMPU, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
@ -113,6 +114,7 @@ const static struct opcode_table_s opcode_table[] = {
{ "%or/r", of_ORR, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%set", of_SET, 2, {OA_FUNC_PTR, OA_BIT1, OA_NONE} },
{ "%set/m", of_SET_MEM,2, {OA_MEM_PTR, OA_BIT1, OA_NONE} },
{ "%set/x", of_SET_X, 3, {OA_FUNC_PTR, OA_BIT1, OA_BIT2} },
{ "%shiftl/i0", of_SHIFTL_I0, 2, {OA_BIT1,OA_NUMBER, OA_NONE} },
{ "%shiftr/i0", of_SHIFTR_I0, 2, {OA_BIT1,OA_NUMBER, OA_NONE} },
{ "%sub", of_SUB, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
@ -1627,6 +1629,9 @@ vvp_ipoint_t debug_lookup_functor(const char*name)
/*
* $Log: compile.cc,v $
* Revision 1.98 2001/08/26 22:59:32 steve
* Add the assign/x0 and set/x opcodes.
*
* Revision 1.97 2001/08/25 17:22:32 steve
* Only use fvectors for nets and vars.
*

22
vvp/opcodes.txt
View File

@ -1,7 +1,7 @@
/*
* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
*
* $Id: opcodes.txt,v 1.27 2001/07/22 00:04:50 steve Exp $
* $Id: opcodes.txt,v 1.28 2001/08/26 22:59:32 steve Exp $
*/
@ -58,6 +58,19 @@ by index register 3. Bit address zero is the LSB of the first memory
word.
* %assign/x0 <var-label>, <delay>, <bit>
This does a non-blocking assignment to a functor, similar to the
%assign instruction. The <var-label> identifies the base functor of
the affected variable, and the <delay> gives the delay when the
assignment takes place. The delay may be 0. The actual functor used is
calculated by using <var-label> as a base, and indexing with the
index[0] index register. This supports indexed assignment.
The <bit> is the address of the thread register that contains the bit
value to assign.
* %breakpoint
This instruction unconditionally breaks the simulator into the
@ -307,6 +320,13 @@ address zero is the LSB of the first memory word. This instruction
sets only a single bit.
* %set/x <var-label>, <bit>, <idx>
This sets the bit of a variable functor, the address calculated by
using the index register <idx> (0, 1, 2 or 3) to index the functor
address of <var-label>.
* %shiftl/i0 <bit>, <wid>
This instruction shifts the vector left (towards more significant

22
vvp/vthread.cc
View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vthread.cc,v 1.52 2001/08/08 00:53:50 steve Exp $"
#ident "$Id: vthread.cc,v 1.53 2001/08/26 22:59:32 steve Exp $"
#endif
# include "vthread.h"
@ -377,6 +377,14 @@ bool of_ASSIGN(vthread_t thr, vvp_code_t cp)
return true;
}
bool of_ASSIGN_X0(vthread_t thr, vvp_code_t cp)
{
unsigned char bit_val = thr_get_bit(thr, cp->bit_idx2);
vvp_ipoint_t itmp = ipoint_index(cp->iptr, thr->index[0]);
schedule_assign(itmp, bit_val, cp->bit_idx1);
return true;
}
bool of_ASSIGN_MEM(vthread_t thr, vvp_code_t cp)
{
unsigned char bit_val = thr_get_bit(thr, cp->bit_idx2);
@ -1140,6 +1148,15 @@ bool of_SET_MEM(vthread_t thr, vvp_code_t cp)
return true;
}
bool of_SET_X(vthread_t thr, vvp_code_t cp)
{
unsigned char bit_val = thr_get_bit(thr, cp->bit_idx1);
vvp_ipoint_t itmp = ipoint_index(cp->iptr, thr->index[cp->bit_idx2&3]);
functor_set(itmp, bit_val, strong_values[bit_val], true);
return true;
}
bool of_SHIFTL_I0(vthread_t thr, vvp_code_t cp)
{
unsigned base = cp->bit_idx1;
@ -1336,6 +1353,9 @@ bool of_ZOMBIE(vthread_t thr, vvp_code_t)
/*
* $Log: vthread.cc,v $
* Revision 1.53 2001/08/26 22:59:32 steve
* Add the assign/x0 and set/x opcodes.
*
* Revision 1.52 2001/08/08 00:53:50 steve
* signed/unsigned warnings?
*