141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
// This is free and unencumbered software released into the public domain.
|
|
//
|
|
// Anyone is free to copy, modify, publish, use, compile, sell, or
|
|
// distribute this software, either in source code form or as a compiled
|
|
// binary, for any purpose, commercial or non-commercial, and by any
|
|
// means.
|
|
|
|
#include "firmware.h"
|
|
|
|
uint32_t *irq(uint32_t *regs, uint32_t irqs)
|
|
{
|
|
static unsigned int ext_irq_4_count = 0;
|
|
static unsigned int ext_irq_5_count = 0;
|
|
static unsigned int timer_irq_count = 0;
|
|
|
|
// checking compressed isa q0 reg handling
|
|
{
|
|
uint32_t pc = (regs[0] & 1) ? regs[0] - 3 : regs[0] - 4;
|
|
uint32_t instr = *(uint16_t*)pc;
|
|
|
|
if ((instr & 3) == 3)
|
|
instr = instr | (*(uint16_t*)(pc + 2)) << 16;
|
|
|
|
if (((instr & 3) != 3) != (regs[0] & 1)) {
|
|
print_str("Mismatch between q0 LSB and decoded instruction word! q0=0x");
|
|
print_hex(regs[0], 8);
|
|
print_str(", instr=0x");
|
|
if ((instr & 3) == 3)
|
|
print_hex(instr, 8);
|
|
else
|
|
print_hex(instr, 4);
|
|
print_str("\n");
|
|
__asm__ volatile ("sbreak");
|
|
}
|
|
}
|
|
|
|
if ((irqs & (1<<4)) != 0) {
|
|
ext_irq_4_count++;
|
|
// print_str("[EXT-IRQ-4]");
|
|
}
|
|
|
|
if ((irqs & (1<<5)) != 0) {
|
|
ext_irq_5_count++;
|
|
// print_str("[EXT-IRQ-5]");
|
|
}
|
|
|
|
if ((irqs & 1) != 0) {
|
|
timer_irq_count++;
|
|
// print_str("[TIMER-IRQ]");
|
|
}
|
|
|
|
if ((irqs & 6) != 0)
|
|
{
|
|
uint32_t pc = (regs[0] & 1) ? regs[0] - 3 : regs[0] - 4;
|
|
uint32_t instr = *(uint16_t*)pc;
|
|
|
|
if ((instr & 3) == 3)
|
|
instr = instr | (*(uint16_t*)(pc + 2)) << 16;
|
|
|
|
print_str("\n");
|
|
print_str("------------------------------------------------------------\n");
|
|
|
|
if ((irqs & 2) != 0) {
|
|
if (instr == 0x00100073 || instr == 0x9002) {
|
|
print_str("SBREAK instruction at 0x");
|
|
print_hex(pc, 8);
|
|
print_str("\n");
|
|
} else {
|
|
print_str("Illegal Instruction at 0x");
|
|
print_hex(pc, 8);
|
|
print_str(": 0x");
|
|
print_hex(instr, ((instr & 3) == 3) ? 8 : 4);
|
|
print_str("\n");
|
|
}
|
|
}
|
|
|
|
if ((irqs & 4) != 0) {
|
|
print_str("Bus error in Instruction at 0x");
|
|
print_hex(pc, 8);
|
|
print_str(": 0x");
|
|
print_hex(instr, ((instr & 3) == 3) ? 8 : 4);
|
|
print_str("\n");
|
|
}
|
|
|
|
for (int i = 0; i < 8; i++)
|
|
for (int k = 0; k < 4; k++)
|
|
{
|
|
int r = i + k*8;
|
|
|
|
if (r == 0) {
|
|
print_str("pc ");
|
|
} else
|
|
if (r < 10) {
|
|
print_chr('x');
|
|
print_chr('0' + r);
|
|
print_chr(' ');
|
|
print_chr(' ');
|
|
} else
|
|
if (r < 20) {
|
|
print_chr('x');
|
|
print_chr('1');
|
|
print_chr('0' + r - 10);
|
|
print_chr(' ');
|
|
} else
|
|
if (r < 30) {
|
|
print_chr('x');
|
|
print_chr('2');
|
|
print_chr('0' + r - 20);
|
|
print_chr(' ');
|
|
} else {
|
|
print_chr('x');
|
|
print_chr('3');
|
|
print_chr('0' + r - 30);
|
|
print_chr(' ');
|
|
}
|
|
|
|
print_hex(regs[r], 8);
|
|
print_str(k == 3 ? "\n" : " ");
|
|
}
|
|
|
|
print_str("------------------------------------------------------------\n");
|
|
|
|
print_str("Number of fast external IRQs counted: ");
|
|
print_dec(ext_irq_4_count);
|
|
print_str("\n");
|
|
|
|
print_str("Number of slow external IRQs counted: ");
|
|
print_dec(ext_irq_5_count);
|
|
print_str("\n");
|
|
|
|
print_str("Number of timer IRQs counted: ");
|
|
print_dec(timer_irq_count);
|
|
print_str("\n");
|
|
|
|
__asm__ volatile ("sbreak");
|
|
}
|
|
|
|
return regs;
|
|
}
|
|
|