VVP support for memories in expressions,

including general support for thread bit
 vectors as system task parameters.
 (Stephan Boettcher)
This commit is contained in:
steve 2001-05-10 00:26:53 +00:00
parent 91d65d0e4e
commit 44a182d92c
10 changed files with 529 additions and 31 deletions

View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: eval_expr.c,v 1.24 2001/05/06 17:54:33 steve Exp $"
#ident "$Id: eval_expr.c,v 1.25 2001/05/10 00:26:53 steve Exp $"
#endif
# include "vvp_priv.h"
@ -738,7 +738,7 @@ void draw_memory_index_expr(ivl_memory_t mem, ivl_expr_t ae)
{
int root = ivl_memory_root(mem);
unsigned width = ivl_memory_width(mem);
width = (width+7) & ~7;
width = (width+3) & ~3;
switch (ivl_expr_type(ae)) {
case IVL_EX_NUMBER: {
@ -772,9 +772,9 @@ void draw_memory_index_expr(ivl_memory_t mem, ivl_expr_t ae)
addr.base, addr.wid);
clr_vector(addr);
if (root>0)
fprintf(vvp_out, " %%ix/sub 3, %u\n", root);
fprintf(vvp_out, " %%ix/sub 3, %u;\n", root);
if (width>1)
fprintf(vvp_out, " %%ix/mul 3, %u\n", width);
fprintf(vvp_out, " %%ix/mul 3, %u;\n", width);
break;
}
}
@ -967,6 +967,12 @@ struct vector_info draw_eval_expr(ivl_expr_t exp)
/*
* $Log: eval_expr.c,v $
* Revision 1.25 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
* Revision 1.24 2001/05/06 17:54:33 steve
* Behavioral code to read memories. (Stephan Boettcher)
*

View File

@ -17,12 +17,13 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vvp_process.c,v 1.32 2001/05/08 23:59:33 steve Exp $"
#ident "$Id: vvp_process.c,v 1.33 2001/05/10 00:26:53 steve Exp $"
#endif
# include "vvp_priv.h"
# include <string.h>
# include <assert.h>
# include <malloc.h>
static int show_statement(ivl_statement_t net, ivl_scope_t sscope);
@ -585,12 +586,39 @@ static int show_system_task_call(ivl_statement_t net)
{
unsigned idx;
unsigned parm_count = ivl_stmt_parm_count(net);
struct vector_info *vec = 0x0;
unsigned int vecs= 0;
unsigned int veci= 0;
if (parm_count == 0) {
fprintf(vvp_out, " %%vpi_call \"%s\";\n", ivl_stmt_name(net));
return 0;
}
for (idx = 0 ; idx < parm_count ; idx += 1) {
ivl_expr_t expr = ivl_stmt_parm(net, idx);
switch (ivl_expr_type(expr)) {
case IVL_EX_NUMBER:
case IVL_EX_SIGNAL:
case IVL_EX_STRING:
case IVL_EX_SCOPE:
case IVL_EX_SFUNC:
continue;
case IVL_EX_MEMORY:
if (!ivl_expr_oper1(expr)) {
continue;
}
default:
break;
}
vec = (struct vector_info *)
realloc(vec, (vecs+1)*sizeof(struct vector_info));
vec[vecs] = draw_eval_expr(expr);
vecs++;
}
fprintf(vvp_out, " %%vpi_call \"%s\"", ivl_stmt_name(net));
for (idx = 0 ; idx < parm_count ; idx += 1) {
ivl_expr_t expr = ivl_stmt_parm(net, idx);
@ -604,43 +632,56 @@ static int show_system_task_call(ivl_statement_t net)
fprintf(vvp_out, ", %u'b", wid);
for (bit = wid ; bit > 0 ; bit -= 1)
fputc(bits[bit-1], vvp_out);
break;
continue;
}
case IVL_EX_SIGNAL:
fprintf(vvp_out, ", V_%s", ivl_expr_name(expr));
break;
case IVL_EX_MEMORY:
if (!ivl_expr_oper1(expr))
fprintf(vvp_out, ", M_%s", ivl_expr_name(expr));
else
fprintf(vvp_out, ", M_%s[?]", ivl_expr_name(expr));
break;
continue;
case IVL_EX_STRING:
fprintf(vvp_out, ", \"%s\"", ivl_expr_string(expr));
break;
continue;
case IVL_EX_SCOPE:
fprintf(vvp_out, ", S_%s",
ivl_scope_name(ivl_expr_scope(expr)));
break;
continue;
case IVL_EX_SFUNC:
if (strcmp("$time", ivl_expr_name(expr)) == 0)
fprintf(vvp_out, ", $time");
else
fprintf(vvp_out, ", ?");
continue;
case IVL_EX_MEMORY:
if (!ivl_expr_oper1(expr)) {
fprintf(vvp_out, ", M_%s", ivl_expr_name(expr));
continue;
}
break;
default:
fprintf(vvp_out, ", ?");
break;
}
fprintf(vvp_out, ", T<%u,%u>",
vec[veci].base,
vec[veci].wid);
veci++;
}
assert(veci == vecs);
if (vecs) {
for (idx = 0; idx < vecs; idx++)
clr_vector(vec[idx]);
free(vec);
}
fprintf(vvp_out, ";\n");
return 0;
}
@ -813,6 +854,12 @@ int draw_func_definition(ivl_scope_t scope)
/*
* $Log: vvp_process.c,v $
* Revision 1.33 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
* Revision 1.32 2001/05/08 23:59:33 steve
* Add ivl and vvp.tgt support for memories in
* expressions and l-values. (Stephan Boettcher)

View File

@ -16,7 +16,7 @@
# 59 Temple Place - Suite 330
# Boston, MA 02111-1307, USA
#
#ident "$Id: Makefile.in,v 1.18 2001/05/09 02:53:25 steve Exp $"
#ident "$Id: Makefile.in,v 1.19 2001/05/10 00:26:53 steve Exp $"
#
#
SHELL = /bin/sh
@ -59,7 +59,8 @@ check: all
./vvp -M../vpi $(srcdir)/examples/hello.vvp | grep 'Hello, World.'
V = vpi_modules.o vpi_const.o vpi_iter.o vpi_mcd.o vpi_priv.o \
vpi_scope.o vpi_signal.o vpi_tasks.o vpi_time.o vpi_memory.o
vpi_scope.o vpi_signal.o vpi_tasks.o vpi_time.o vpi_memory.o \
vpi_vthr_vector.o
O = main.o parse.o parse_misc.o lexor.o compile.o debug.o functor.o \
resolv.o symbols.o codes.o vthread.o schedule.o tables.o udp.o memory.o $V

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@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: compile.cc,v 1.61 2001/05/09 04:23:18 steve Exp $"
#ident "$Id: compile.cc,v 1.62 2001/05/10 00:26:53 steve Exp $"
#endif
# include "compile.h"
@ -83,7 +83,7 @@ const static struct opcode_table_s opcode_table[] = {
{ "%end", of_END, 0, {OA_NONE, OA_NONE, OA_NONE} },
{ "%inv", of_INV, 2, {OA_BIT1, OA_BIT2, OA_NONE} },
{ "%ix/add", of_IX_ADD, 2, {OA_BIT1, OA_NUMBER, OA_NONE} },
{ "%ix/get", of_IX_GET, 2, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%ix/get", of_IX_GET, 3, {OA_BIT1, OA_BIT2, OA_NUMBER} },
{ "%ix/load",of_IX_LOAD,2, {OA_BIT1, OA_NUMBER, OA_NONE} },
{ "%ix/mul", of_IX_MUL, 2, {OA_BIT1, OA_NUMBER, OA_NONE} },
{ "%ix/sub", of_IX_SUB, 2, {OA_BIT1, OA_NUMBER, OA_NONE} },
@ -922,6 +922,21 @@ vpiHandle compile_vpi_lookup(const char*label)
symbol_value_t val;
val = sym_get_value(sym_vpi, label);
if (!val.ptr) {
// check for thread vector T<base,wid>
unsigned base, wid;
unsigned n;
if (2 <= sscanf(label, "T<%u,%u>%n", &base, &wid, &n)
&& n == strlen(label)) {
val.ptr = vpip_make_vthr_vector(base, wid);
sym_set_value(sym_vpi, label, val);
}
}
if (!val.ptr) {
// check for memory word M<mem,base,wid>
}
return (vpiHandle) val.ptr;
}
@ -1126,6 +1141,12 @@ vvp_ipoint_t debug_lookup_functor(const char*name)
/*
* $Log: compile.cc,v $
* Revision 1.62 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
* Revision 1.61 2001/05/09 04:23:18 steve
* Now that the interactive debugger exists,
* there is no use for the output dump.

View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: lexor.lex,v 1.16 2001/05/09 02:53:25 steve Exp $"
#ident "$Id: lexor.lex,v 1.17 2001/05/10 00:26:53 steve Exp $"
#endif
# include "parse_misc.h"
@ -110,6 +110,12 @@
yylval.text = strdup(yytext);
return T_SYMBOL; }
/* Symbols may include komma `,' in certain constructs */
[A-Z]"<"[.$_a-zA-Z0-9/,]*">" {
yylval.text = strdup(yytext);
return T_SYMBOL; }
/* Accept the common assembler style comments, treat them as white
space. Of course, also skip white space. The semi-colon is
@ -133,6 +139,12 @@ int yywrap()
/*
* $Log: lexor.lex,v $
* Revision 1.17 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
* Revision 1.16 2001/05/09 02:53:25 steve
* Implement the .resolv syntax.
*

View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vpi_priv.h,v 1.14 2001/05/08 23:59:33 steve Exp $"
#ident "$Id: vpi_priv.h,v 1.15 2001/05/10 00:26:53 steve Exp $"
#endif
# include "vpi_user.h"
@ -168,6 +168,13 @@ struct __vpiBinaryConst {
vpiHandle vpip_make_binary_const(unsigned wid, char*bits);
/*
* This one looks like a constant, but really is a vector in the current
* thread.
*/
vpiHandle vpip_make_vthr_vector(unsigned base, unsigned wid);
/*
* This function is called before any compilation to load VPI
* modules. This gives the modules a chance to announce their
@ -194,7 +201,9 @@ extern vpiHandle vpip_build_vpi_call(const char*name,
unsigned argc,
vpiHandle*argv);
extern void vpip_execute_vpi_call(vpiHandle obj);
extern vthread_t vpip_current_vthread;
extern void vpip_execute_vpi_call(vthread_t thr, vpiHandle obj);
/*
@ -206,6 +215,12 @@ vpiHandle vpip_sim_time(void);
/*
* $Log: vpi_priv.h,v $
* Revision 1.15 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
* Revision 1.14 2001/05/08 23:59:33 steve
* Add ivl and vvp.tgt support for memories in
* expressions and l-values. (Stephan Boettcher)

View File

@ -17,7 +17,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vpi_tasks.cc,v 1.5 2001/04/18 04:21:23 steve Exp $"
#ident "$Id: vpi_tasks.cc,v 1.6 2001/05/10 00:26:53 steve Exp $"
#endif
/*
@ -172,8 +172,13 @@ vpiHandle vpip_build_vpi_call(const char*name,
* place the call to the system task/function. For now, only support
* calls to system tasks.
*/
void vpip_execute_vpi_call(vpiHandle ref)
vthread_t vpip_current_vthread;
void vpip_execute_vpi_call(vthread_t thr, vpiHandle ref)
{
vpip_current_vthread = thr;
assert(ref->vpi_type->type_code == vpiSysTaskCall);
vpip_cur_task = (struct __vpiSysTaskCall*)ref;
@ -197,6 +202,12 @@ void vpi_register_systf(const struct t_vpi_systf_data*ss)
/*
* $Log: vpi_tasks.cc,v $
* Revision 1.6 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
* Revision 1.5 2001/04/18 04:21:23 steve
* Put threads into scopes.
*

355
vvp/vpi_vthr_vector.cc Normal file
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@ -0,0 +1,355 @@
/*
* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
* Copyright (c) 2001 Stephan Boettcher <stephan@nevis.columbia.edu>
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
* General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vpi_vthr_vector.cc,v 1.1 2001/05/10 00:26:53 steve Exp $"
#endif
/*
* vpiReg handles are handled here. These objects represent vectors of
* .var objects that can be manipulated by the VPI module.
*/
# include "vpi_priv.h"
# include "vthread.h"
# include <stdio.h>
# include <malloc.h>
# include <assert.h>
struct __vpiVThrVec {
struct __vpiHandle base;
unsigned short bas;
unsigned short wid;
char *name;
};
inline static
unsigned get_bit(struct __vpiVThrVec *rfp, unsigned idx)
{
return vthread_get_bit(vpip_current_vthread, rfp->bas+idx);
}
inline static
void set_bit(struct __vpiVThrVec *rfp, unsigned idx, unsigned bit)
{
return vthread_put_bit(vpip_current_vthread, rfp->bas+idx, bit);
}
/*
* Hex digits that represent 4-value bits of Verilog are not as
* trivially obvious to display as if the bits were the usual 2-value
* bits. So, although it is possible to write a function that
* generates a correct character for 4*4-value bits, it is easier to
* just perform the lookup in a table. This only takes 256 bytes,
* which is not many executable instructions:-)
*
* The table is calculated as compile time, therefore, by the
* draw_tt.c program.
*/
extern const char hex_digits[256];
extern const char oct_digits[256];
/*
* vpi_get
*/
static int vthr_vec_get(int code, vpiHandle ref)
{
assert((ref->vpi_type->type_code==vpiNet)
|| (ref->vpi_type->type_code==vpiReg)
|| (ref->vpi_type->type_code==vpiConstant));
struct __vpiVThrVec*rfp = (struct __vpiVThrVec*)ref;
switch (code) {
case vpiSigned:
return 0;
case vpiSize:
return rfp->wid;
default:
return 0;
}
}
static char* vthr_vec_get_str(int code, vpiHandle ref)
{
assert((ref->vpi_type->type_code==vpiNet)
|| (ref->vpi_type->type_code==vpiReg));
struct __vpiVThrVec*rfp = (struct __vpiVThrVec*)ref;
switch (code) {
case vpiFullName:
return (char*)rfp->name;
}
return 0;
}
static char buf[4096];
static void vthr_vec_DecStrVal(struct __vpiVThrVec*rfp, s_vpi_value*vp)
{
unsigned long val = 0;
unsigned count_x = 0, count_z = 0;
for (unsigned idx = 0 ; idx < rfp->wid ; idx += 1) {
val *= 2;
switch (get_bit(rfp, idx)) {
case 0:
break;
case 1:
val += 1;
break;
case 2:
count_x += 1;
break;
case 3:
count_z += 1;
break;
}
}
if (count_x == rfp->wid) {
buf[0] = 'x';
buf[1] = 0;
return;
}
if (count_x > 0) {
buf[0] = 'X';
buf[1] = 0;
return;
}
if (count_z == rfp->wid) {
buf[0] = 'z';
buf[1] = 0;
return;
}
if (count_z > 0) {
buf[0] = 'Z';
buf[1] = 0;
return;
}
sprintf(buf, "%lu", val);
}
/*
* The get_value method reads the values of the functors and returns
* the vector to the caller. This causes no side-effect, and reads the
* variables like a %load would.
*/
static void vthr_vec_get_value(vpiHandle ref, s_vpi_value*vp)
{
assert((ref->vpi_type->type_code==vpiNet)
|| (ref->vpi_type->type_code==vpiReg)
|| (ref->vpi_type->type_code==vpiConstant));
struct __vpiVThrVec*rfp = (struct __vpiVThrVec*)ref;
unsigned wid = rfp->wid;
switch (vp->format) {
case vpiBinStrVal:
for (unsigned idx = 0 ; idx < wid ; idx += 1) {
buf[wid-idx-1] = "01xz"[get_bit(rfp, idx)];
}
buf[wid] = 0;
vp->value.str = buf;
break;
case vpiHexStrVal: {
unsigned hval, hwid;
hwid = (wid + 3) / 4;
buf[hwid] = 0;
hval = 0;
for (unsigned idx = 0 ; idx < wid ; idx += 1) {
hval = hval | (get_bit(rfp, idx) << 2*(idx % 4));
if (idx%4 == 3) {
hwid -= 1;
buf[hwid] = hex_digits[hval];
hval = 0;
}
}
if (hwid > 0) {
hwid -= 1;
buf[hwid] = hex_digits[hval];
hval = 0;
}
vp->value.str = buf;
break;
}
case vpiOctStrVal: {
unsigned hval, hwid;
hwid = (wid + 2) / 3;
buf[hwid] = 0;
hval = 0;
for (unsigned idx = 0 ; idx < wid ; idx += 1) {
hval = hval | (get_bit(rfp,idx) << 2*(idx % 3));
if (idx%3 == 2) {
hwid -= 1;
buf[hwid] = oct_digits[hval];
hval = 0;
}
}
if (hwid > 0) {
hwid -= 1;
buf[hwid] = oct_digits[hval];
hval = 0;
}
vp->value.str = buf;
break;
}
case vpiDecStrVal:
vthr_vec_DecStrVal(rfp, vp);
vp->value.str = buf;
break;
default:
/* XXXX Not implemented yet. */
assert(0);
}
}
/*
* The put_value method writes the value into the vector.
*/
static vpiHandle vthr_vec_put_value(vpiHandle ref, s_vpi_value*vp,
p_vpi_time when, int flags)
{
assert((ref->vpi_type->type_code==vpiNet)
|| (ref->vpi_type->type_code==vpiReg));
struct __vpiVThrVec*rfp = (struct __vpiVThrVec*)ref;
/* XXXX delays are not yet supported. */
assert(flags == vpiNoDelay);
unsigned wid = rfp->wid;
switch (vp->format) {
case vpiIntVal: {
assert(wid <= sizeof(long));
long val = vp->value.integer;
for (unsigned idx = 0 ; idx < wid ; idx += 1) {
set_bit(rfp, idx, val&1);
val >>= 1;
}
break;
}
case vpiScalarVal:
switch (vp->value.scalar) {
case vpi0:
set_bit(rfp, 0, 0);
break;
case vpi1:
set_bit(rfp, 0, 1);
break;
case vpiX:
set_bit(rfp, 0, 2);
break;
case vpiZ:
set_bit(rfp, 0, 3);
break;
default:
assert(0);
}
break;
case vpiVectorVal: {
assert(wid <= sizeof (unsigned long));
unsigned long aval = vp->value.vector->aval;
unsigned long bval = vp->value.vector->bval;
for (unsigned idx = 0 ; idx < wid ; idx += 1) {
int bit = (aval&1) | (((bval^aval)<<1)&2);
set_bit(rfp, idx, bit);
aval >>= 1;
bval >>= 1;
}
break;
}
default:
assert(0);
}
return ref;
}
// The code fully supports vpiReg, vpi_Net, but we do not
// create such things, yet. Lacking a neme, for example.
static const struct __vpirt vpip_vthr_const_rt = {
vpiConstant,
vthr_vec_get,
vthr_vec_get_str,
vthr_vec_get_value,
vthr_vec_put_value,
0,
0
};
/*
* Construct a vpiReg object. Give the object specified dimensions,
* and point to the specified functor for the lsb.
*/
vpiHandle vpip_make_vthr_vector(unsigned base, unsigned wid)
{
struct __vpiVThrVec*obj = (struct __vpiVThrVec*)
malloc(sizeof(struct __vpiVThrVec));
obj->base.vpi_type = &vpip_vthr_const_rt;
obj->bas = base;
obj->wid = wid;
obj->name = "T<>";
return &obj->base;
}
/*
* $Log: vpi_vthr_vector.cc,v $
* Revision 1.1 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
*/

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 1.38 2001/05/08 23:59:33 steve Exp $"
#ident "$Id: vthread.cc,v 1.39 2001/05/10 00:26:53 steve Exp $"
#endif
# include "vthread.h"
@ -131,6 +131,18 @@ static inline void thr_put_bit(struct vthread_s*thr,
thr->bits[addr] = (thr->bits[addr] & ~mask) | (val << (idx*2));
}
unsigned vthread_get_bit(struct vthread_s*thr, unsigned addr)
{
return thr_get_bit(thr, addr);
}
void vthread_put_bit(struct vthread_s*thr, unsigned addr, unsigned bit)
{
assert(addr < thr->nbits);
thr_put_bit(thr, addr, bit);
}
/*
* Create a new thread with the given start address.
*/
@ -886,7 +898,7 @@ bool of_SUB(vthread_t thr, vvp_code_t cp)
bool of_VPI_CALL(vthread_t thr, vvp_code_t cp)
{
// printf("thread %p: %%vpi_call\n", thr);
vpip_execute_vpi_call(cp->handle);
vpip_execute_vpi_call(thr, cp->handle);
return schedule_finished()? false : true;
}
@ -993,6 +1005,12 @@ bool of_ZOMBIE(vthread_t thr, vvp_code_t)
/*
* $Log: vthread.cc,v $
* Revision 1.39 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
* Revision 1.38 2001/05/08 23:59:33 steve
* Add ivl and vvp.tgt support for memories in
* expressions and l-values. (Stephan Boettcher)

View File

@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#if !defined(WINNT)
#ident "$Id: vthread.h,v 1.5 2001/04/21 00:34:39 steve Exp $"
#ident "$Id: vthread.h,v 1.6 2001/05/10 00:26:53 steve Exp $"
#endif
/*
@ -63,8 +63,20 @@ extern void vthread_run(vthread_t thr);
extern void vthread_schedule_list(vthread_t thr);
/*
** Return a bit from the thread's bit space;
*/
unsigned vthread_get_bit(struct vthread_s*thr, unsigned addr);
void vthread_put_bit(struct vthread_s*thr, unsigned addr, unsigned bit);
/*
* $Log: vthread.h,v $
* Revision 1.6 2001/05/10 00:26:53 steve
* VVP support for memories in expressions,
* including general support for thread bit
* vectors as system task parameters.
* (Stephan Boettcher)
*
* Revision 1.5 2001/04/21 00:34:39 steve
* Working %disable and reap handling references from scheduler.
*