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Add the bitwise %and instruction.

This commit is contained in:
steve 2001-04-01 06:12:13 +00:00
parent 6dbf7333c8
commit 5769bbe15e
4 changed files with 59 additions and 6 deletions
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10
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 1.11 2001/04/01 04:34:28 steve Exp $"
#ident "$Id: codes.h,v 1.12 2001/04/01 06:12:13 steve Exp $"
#endif
@ -36,6 +36,7 @@ typedef bool (*vvp_code_fun)(vthread_t thr, vvp_code_t code);
* access to the thread context.
*/
extern bool of_ADD(vthread_t thr, vvp_code_t code);
extern bool of_AND(vthread_t thr, vvp_code_t code);
extern bool of_ASSIGN(vthread_t thr, vvp_code_t code);
extern bool of_CMPU(vthread_t thr, vvp_code_t code);
extern bool of_CMPX(vthread_t thr, vvp_code_t code);
@ -51,10 +52,10 @@ extern bool of_JMP1(vthread_t thr, vvp_code_t code);
extern bool of_JOIN(vthread_t thr, vvp_code_t code);
extern bool of_LOAD(vthread_t thr, vvp_code_t code);
extern bool of_MOV(vthread_t thr, vvp_code_t code);
extern bool of_SET(vthread_t thr, vvp_code_t code);
extern bool of_WAIT(vthread_t thr, vvp_code_t code);
extern bool of_NOOP(vthread_t thr, vvp_code_t code);
extern bool of_SET(vthread_t thr, vvp_code_t code);
extern bool of_VPI_CALL(vthread_t thr, vvp_code_t code);
extern bool of_WAIT(vthread_t thr, vvp_code_t code);
/*
* This is the format of a machine code instruction.
@ -99,6 +100,9 @@ extern void codespace_dump(FILE*fd);
/*
* $Log: codes.h,v $
* Revision 1.12 2001/04/01 06:12:13 steve
* Add the bitwise %and instruction.
*
* Revision 1.11 2001/04/01 04:34:28 steve
* Implement %cmp/x and %cmp/z instructions.
*

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 1.23 2001/04/01 04:34:28 steve Exp $"
#ident "$Id: compile.cc,v 1.24 2001/04/01 06:12:13 steve Exp $"
#endif
# include "compile.h"
@ -66,6 +66,7 @@ struct opcode_table_s {
const static struct opcode_table_s opcode_table[] = {
{ "%add", of_ADD, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%and", of_AND, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%assign", of_ASSIGN, 3, {OA_FUNC_PTR, OA_BIT1, OA_BIT2} },
{ "%cmp/u", of_CMPU, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%cmp/x", of_CMPX, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
@ -81,6 +82,7 @@ const static struct opcode_table_s opcode_table[] = {
{ "%join", of_JOIN, 0, {OA_NONE, OA_NONE, OA_NONE} },
{ "%load", of_LOAD, 2, {OA_BIT1, OA_FUNC_PTR, OA_NONE} },
{ "%mov", of_MOV, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%noop", of_NOOP, 0, {OA_NONE, OA_NONE, OA_NONE} },
{ "%set", of_SET, 2, {OA_FUNC_PTR, OA_BIT1, OA_NONE} },
{ "%wait", of_WAIT, 1, {OA_FUNC_PTR, OA_NONE, OA_NONE} },
{ 0, of_NOOP, 0, {OA_NONE, OA_NONE, OA_NONE} }
@ -694,6 +696,9 @@ void compile_dump(FILE*fd)
/*
* $Log: compile.cc,v $
* Revision 1.24 2001/04/01 06:12:13 steve
* Add the bitwise %and instruction.
*
* Revision 1.23 2001/04/01 04:34:28 steve
* Implement %cmp/x and %cmp/z instructions.
*

13
vvp/opcodes.txt
View File

@ -1,7 +1,7 @@
/*
* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
*
* $Id: opcodes.txt,v 1.8 2001/03/31 01:59:59 steve Exp $
* $Id: opcodes.txt,v 1.9 2001/04/01 06:12:14 steve Exp $
*/
@ -20,6 +20,17 @@ vectors having the width <wid>. If any of the bits of either vector
are x or z, the result is x. Otherwise, the result is the arithmetic
sum.
* %and <bit-l>, <bit-r>, <wid>
Perform the bitwise AND of the two vectors, and store the result in
the left vector. Each bit is calculated independent of other bits. AND
means the following:
0 and ? --> 0
? and 0 --> 0
1 and 1 --> 1
otherwise x
* %assign <var-label>, <delay>, <bit>
This does a non-blocking assignment to a variable. The <label>

35
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 1.17 2001/04/01 04:34:28 steve Exp $"
#ident "$Id: vthread.cc,v 1.18 2001/04/01 06:12:14 steve Exp $"
#endif
# include "vthread.h"
@ -131,6 +131,36 @@ void vthread_schedule_list(vthread_t thr)
}
}
bool of_AND(vthread_t thr, vvp_code_t cp)
{
assert(cp->bit_idx1 >= 4);
unsigned idx1 = cp->bit_idx1;
unsigned idx2 = cp->bit_idx2;
for (unsigned idx = 0 ; idx < cp->number ; idx += 1) {
unsigned lb = thr_get_bit(thr, idx1);
unsigned rb = thr_get_bit(thr, idx2);
if ((lb == 0) || (rb == 0)) {
thr_put_bit(thr, idx1, 0);
} else if ((lb == 1) && (rb == 1)) {
thr_put_bit(thr, idx1, 1);
} else {
thr_put_bit(thr, idx1, 2);
}
idx1 += 1;
if (idx2 >= 4)
idx2 += 1;
}
return true;
}
bool of_ADD(vthread_t thr, vvp_code_t cp)
{
assert(cp->bit_idx1 >= 4);
@ -412,6 +442,9 @@ bool of_WAIT(vthread_t thr, vvp_code_t cp)
/*
* $Log: vthread.cc,v $
* Revision 1.18 2001/04/01 06:12:14 steve
* Add the bitwise %and instruction.
*
* Revision 1.17 2001/04/01 04:34:28 steve
* Implement %cmp/x and %cmp/z instructions.
*