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added error text on exception

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This commit is contained in:
Markus Fröschle
2013-08-02 10:07:44 +00:00
parent 86d40efd50
commit 12ae2f74c0
1 changed files with 123 additions and 2 deletions
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125
BaS_gcc/sources/fault_vectors.c
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@@ -12,10 +12,131 @@ extern exception_handler SDRAM_VECTOR_TABLE[];
void fault_handler(uint32_t format_status, uint32_t pc)
{
xprintf("\007\007exception!\r\n");
int format;
int fault_status;
int vector;
int sr;
xprintf("\007\007exception! Processor halted.\r\n");
xprintf("format_status: %lx\r\n", format_status);
xprintf("pc: %lx\r\n", pc);
xprintf("processor halted.\r\n");
format = (format_status & 0b11110000000000000000000000000000) >> 28;
fault_status = ((format_status & 0b00001100000000000000000000000000) >> 26) |
((format_status & 0b00000000000000110000000000000000) >> 16);
vector = (format_status & 0b00000011111111000000000000000000) >> 18;
sr = (format_status & 0b00000000000000001111111111111111);
xprintf("format: %x\r\n", format);
xprintf("fault_status: %x ", fault_status);
switch (fault_status)
{
case 0:
xprintf("(not an access or address error nor an interrupted debug service routine)");
break;
case 1:
case 3:
case 11:
xprintf("(reserved)");
break;
case 2:
xprintf("(interrupt during a debug service routine for faults other than access errors)");
break;
case 4:
xprintf("(error (for example, protection fault) on instruction fetch)");
break;
case 5:
xprintf("(TLB miss on opword or instruction fetch)");
break;
case 6:
xprintf("(TLB miss on extension word of instruction fetch)");
break;
case 7:
xprintf("(IFP access error while executing in emulator mode)");
break;
case 8:
xprintf("(error on data write)");
break;
case 9:
xprintf("(error on attempted wrote to write-protected space)");
break;
case 10:
xprintf("(TLB miss on data write)");
break;
case 12:
xprintf("(error on data read)");
break;
case 13:
xprintf("(attempted read, read-modify-write of protected space)");
break;
case 14:
xprintf("(TLB miss on data read or read-modify-write");
break;
case 15:
xprintf("(OEP access error while executing in emulator mode)");
}
xprintf("\r\n");
xprintf("vector = %02x (", vector);
switch (vector)
{
case 2:
xprintf("access error");
break;
case 3:
xprintf("address error");
break;
case 4:
xprintf("illegal instruction");
break;
case 5:
xprintf("divide by zero");
break;
case 8:
xprintf("privilege violation");
break;
case 9:
xprintf("trace");
break;
case 10:
xprintf("unimplemented line-a opcode");
break;
case 11:
xprintf("unimplemented line-f opcode");
break;
case 12:
xprintf("non-PC breakpoint debug interrupt");
break;
case 13:
xprintf("PC breakpoint debug interrupt");
break;
case 14:
xprintf("format error");
break;
case 24:
xprintf("spurious interrupt");
break;
default:
if ( ((fault_status >= 6) && (fault_status <= 7)) ||
((fault_status >= 16) && (fault_status <= 23)))
{
xprintf("reserved");
}
else if ((fault_status >= 25) && (fault_status <= 31))
{
xprintf("level %d autovectored interrupt", fault_status - 24);
}
else if ((fault_status >= 32) && (fault_status <= 47))
{
xprintf("trap #%d", fault_status - 32);
}
else
{
xprintf("unknown fault status");
}
}
xprintf(")\r\n");
xprintf("sr=%4x\r\n", sr);
}
void handler(void)