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Fixes for FDC and AT keyboard (showing when running AT&T System V/386 R3.2 UNIX.)

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Added memory context dumping for debugging.
This commit is contained in:
waltje
2018-06-27 15:03:58 -04:00
parent 097fb38af7
commit 7919fbdb93
9 changed files with 529 additions and 397 deletions
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67
src/pc.c
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@@ -8,7 +8,7 @@
*
* Main emulator module where most things are controlled.
*
* Version: @(#)pc.c 1.0.47 2018/06/10
* Version: @(#)pc.c 1.0.48 2018/06/26
*
* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
* Miran Grca, <mgrca8@gmail.com>
@@ -215,8 +215,16 @@ pclog_ex(const char *fmt, va_list ap)
#ifndef RELEASE_BUILD
static char buff[PCLOG_BUFF_SIZE];
static int seen = 0;
static int detect = 1;
char temp[PCLOG_BUFF_SIZE];
if (fmt == NULL) {
/* Initialize. */
detect = (ap != NULL) ? 1 : 0;
seen = 0;
return;
}
if (stdlog == NULL) {
if (log_path[0] != L'\0') {
stdlog = plat_fopen(log_path, L"w");
@@ -236,7 +244,7 @@ pclog_ex(const char *fmt, va_list ap)
}
vsprintf(temp, fmt, ap);
if (! strcmp(buff, temp)) {
if (detect && !strcmp(buff, temp)) {
seen++;
} else {
if (seen) {
@@ -266,6 +274,61 @@ pclog(const char *fmt, ...)
}
/* Enable or disable detection of repeated info being logged. */
void
pclog_repeat(int enabled)
{
pclog_ex(NULL, (va_list)enabled);
}
#ifdef _DEBUG
/* Log a block of code around the current CS:IP. */
void
pclog_dump(int num)
{
char buff[128];
char *sp = NULL;
int i, k;
/* We make the current PC be in the middle of the block. */
num >>= 1;
i = -num;
/* Disable the repeat-detection. */
pclog_repeat(0);
while (i < num) {
if (sp == NULL) {
sp = buff;
sprintf(sp, "%08lx:", cpu_state.pc + i);
sp += strlen(sp);
}
/* Get byte from memory. */
k = readmembl(cpu_state.pc + i);
i++;
sprintf(sp, " %02x", k & 0xff);
sp += strlen(sp);
if ((i % 16) == 0) {
strcat(sp, "\n");
pclog(buff);
sp = NULL;
}
}
if (sp != NULL) {
strcat(sp, "\n");
pclog(buff);
}
/* Re-enable the repeat-detection. */
pclog_repeat(1);
}
#endif
/* Log a fatal error, and display a UI message before exiting. */
void
fatal(const char *fmt, ...)