/*
* EIT processing
* * return value 0 : monitor should keep on running
* 1 : return from the interrupt handler
*/
EXPORT W procEIT( UW vec )
{
const VECINFO *vp;
UW pc, cpsr;
W i;
pc = getCurPCX();
cpsr = getCurCPSR();
/* machine-dependent interrupt processing */
i = procHwInt(vec);
if ( i == 2 ) return 1; /* exit from the interrupt handler immediately */
if ( i == 0 ) {
/* other EIT processing */
for ( i = 1; i < N_VECINFO; ++i ) {
if ( vec < VecInfoTable[i].vec ) break;
}
vp = &VecInfoTable[i-1];
i = (*vp->func)(vp, vec, pc, cpsr);
if ( i > 0 ) {
/* PC is adjusted to the previous instruction's address */
pc -= ( (cpsr & PSR_T) != 0 )? 2: 4;
}
}
DSP_F5(S,"\nPC: ", 08X,pc, S," CPSR: ", 08X,cpsr, CH,'\n');
return 0;
}
/*
* display help message for output command
*/
LOCAL void prOutputHelp( const HELP *help )
{
const UB *p = help->msg;
for (; *p; p++);
p++;
DSP_F5(S,"Output", S,help->msg, S,"(O", S,p, S,") port,data ");
DSP_F3(S,": Output ", S,help->msg, S," to I/O port\n");
}
/*
* display help message for input command
*/
LOCAL void prInputHelp( const HELP *help )
{
const UB *p = help->msg;
for (; *p; p++);
p++;
DSP_F5(S,"Input", S,help->msg, S,"(I", S,p, S,") port ");
DSP_F3(S,": Input ", S,help->msg, S," from I/O port\n");
}
/*
* display help message for fill command
*/
LOCAL void prFillHelp( const HELP *help )
{
const UB *p1 = help->msg;
const UB *p2;
for (; *p1; p1++);
p2 = ++p1;
for (; *p2; p2++);
p2++;
DSP_F5(S,"Fill", S,help->msg,
S,"(F", S,p1, S,") start_addr,{end_addr|#data_cnt}[,data].. ");
DSP_F3(S,": Fill Memory in ", S,p2, CH,'\n');
}
/*
* display help message for modify command
*/
LOCAL void prModifyHelp( const HELP *help )
{
const UB *p1 = help->msg;
const UB *p2;
for (; *p1; p1++);
p2 = ++p1;
for (; *p2; p2++);
p2++;
DSP_F5(S,"Modify", S,help->msg,
S,"(M", S,p1, S,") [start_addr][,data].. ");
DSP_F3(S,": Modify Memory in ", S,p2, CH,'\n');
}
/*
* display help message for dump command
*/
LOCAL void prDumpHelp( const HELP *help )
{
const UB *p1 = help->msg;
const UB *p2;
for (; *p1; p1++);
p2 = ++p1;
for (; *p2; p2++);
p2++;
DSP_F5(S,"Dump", S,help->msg,
S,"(D", S,p1, S,") [start_addr][,{end_addr|#data_cnt}] ");
DSP_F3(S,": Dump Memory in ", S,p2, CH,'\n');
}
/*
loading processing
*/
EXPORT ER doLoading(W proto, UW addr, UW *range)
{
ER er;
e_addr = s_addr = addr; // load address
if (range) { // range specification
loaddr = range[0]; // address lower limit
hiaddr = range[1]; // address upper limit
offset = range[2]; // address offset
} else {
loaddr = 0; // address lower limit
hiaddr = 0xFFFFFFFF; // address upper limit
offset = 0; // address offset
}
if (proto & P_XMODEM) { // XMODEM
readFn = (FUNCP)xmodemRead;
blkptr = blkno = blksz = 0;
} else { // no protocol
readFn = (FUNCP)textRead;
}
if (proto & P_SFORM) { // S format
er = loadSform();
if (er == E_END) er = E_LOAD;
} else { // memory image
er = loadImage();
}
// read termination processing
if (proto & P_XMODEM) xmodemEnd(er);
// wait until there is no more data
purgeInput();
if (er == E_END) er = E_OK;
DSP_LF;
if (er == E_OK) {
e_addr--;
if (range) {
range[0] = s_addr; // load address
range[1] = e_addr;
s_addr -= offset;
e_addr -= offset;
}
DSP_F5(S,"Loaded: ", 08X,s_addr, S," -> ", 08X,e_addr, CH,'\n');
}
return er;
}
/*
* display help message for search command
*/
LOCAL void prSearchHelp( const HELP *help )
{
const UB *p1 = help->msg;
const UB *p2;
for (; *p1; p1++);
p2 = ++p1;
for (; *p2; p2++);
p2++;
DSP_F5(S,"Search", S,help->msg,
S,"(SC", S,p1,
S,") start_addr,{end_addr|#data_cnt},data[,data].. ");
DSP_F3(S,": Search Memory in ", S,p2, CH,'\n');
}
/*
* display help message for WROM command
*/
LOCAL void prWRomHelp( const HELP *help )
{
const MEMSEG *rom, *ram;
UW ram_top, sz;
rom = MemArea(MSA_FROM, 1);
ram = MemArea(MSA_OS, 1);
if ( rom == NULL || ram == NULL ) {
DSP_S("Not Supported\n");
return;
}
ram_top = (ram->top + FROM_SECSZ - 1) & ~(FROM_SECSZ - 1);
sz = rom->end - rom->top;
if ( sz > ram->end - ram_top ) sz = ram->end - ram_top;
DSP_S(help->msg);
DSP_F5(S," rom_addr : 0x", 08X,rom->top,
S," - 0x", 08X,(rom->end-FROM_SECSZ), CH,'\n');
DSP_F5(S," data_ram_addr : 0x", 08X,ram_top,
S," - 0x", 08X,(ram->end-FROM_SECSZ), CH,'\n');
DSP_F5(S," block_count : 1 - ", D,(sz / FROM_SECSZ),
S," (1 block = ", D,(FROM_SECSZ / 1024), S,"KB)\n");
}
/* display message */
LOCAL W vf_msg( const VECINFO *vi, UW vec, UW pc, UW cpsr )
{
B *msg = vi->msg;
B opt;
if ( msg == NULL ) return 0;
/* if the first byte of the message is not a letter, treat it as option.
* opt = 0 - 037 (the code prior to ' ' )
* \020 PC is adjusted to the previous instruction's address
*/
opt = 0;
if ( *msg < ' ' ) opt = *msg++;
DSP_F5(S,"Exception ", D,vec, S," (", S,msg, CH,')');
return ( opt & 020 )? 1: 0;
}