OpenXiangShan
/
nexus-am
mirror of https://github.com/OpenXiangShan/nexus-am.git
3
0
Fork 0
Code Issues Projects Releases Wiki Activity

revise asye impl

This commit is contained in:
Yanyan Jiang 2018-08-09 01:22:15 +00:00
parent 42c41eb1ec
commit 3f1582b009
1 changed files with 30 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
am/arch/x86-qemu/src/asye.c
View File

@ -26,8 +26,16 @@ void irqall();
#define IRQ T_IRQ0 +
#define SYSCALL 0x80
#define E_DIV 0
#define E_UD 6
#define E_NM 7
#define E_DF 8
#define E_TS 10
#define E_NP 11
#define E_SS 12
#define E_GP 13
#define E_PF 14
#define E_MF 15
#define MSG(m) : ev.msg = m;
void irq_handle(struct TrapFrame *tf) {
@ -61,11 +69,9 @@ void irq_handle(struct TrapFrame *tf) {
switch (tf->irq) {
case IRQ 0 MSG("timer interrupt (lapic)")
ev.event = _EVENT_IRQ_TIMER;
break;
ev.event = _EVENT_IRQ_TIMER; break;
case IRQ 1 MSG("I/O device IRQ1 (keyboard)")
ev.event = _EVENT_IRQ_IODEV;
break;
ev.event = _EVENT_IRQ_IODEV; break;
case SYSCALL MSG("int $0x80 trap: _yield() or system call")
if ((int32_t)tf->eax == -1) {
ev.event = _EVENT_YIELD;
@ -73,18 +79,32 @@ void irq_handle(struct TrapFrame *tf) {
ev.event = _EVENT_SYSCALL;
}
break;
case E_PF MSG("page fault, @cause: _PROT_XXX")
case E_DIV MSG("divide by zero")
ev.event = _EVENT_ERROR; break;
case E_UD MSG("UD #6 invalid opcode")
ev.event = _EVENT_ERROR; break;
case E_NM MSG("NM #7 coprocessor error")
ev.event = _EVENT_ERROR; break;
case E_DF MSG("DF #8 double fault")
ev.event = _EVENT_ERROR; break;
case E_TS MSG("TS #10 invalid TSS")
ev.event = _EVENT_ERROR; break;
case E_NP MSG("NP #11 segment/gate not present")
ev.event = _EVENT_ERROR; break;
case E_SS MSG("SS #12 stack fault")
ev.event = _EVENT_ERROR; break;
case E_GP MSG("GP #13, general protection fault")
ev.event = _EVENT_ERROR; break;
case E_PF MSG("PF #14, page fault, @cause: _PROT_XXX")
ev.event = _EVENT_PAGEFAULT;
if (tf->err & 0x1) ev.cause |= _PROT_NONE;
if (tf->err & 0x2) ev.cause |= _PROT_WRITE;
else ev.cause |= _PROT_READ;
ev.ref = get_cr2();
break;
case E_GP MSG("GP #13, general protection failure")
ev.event = _EVENT_ERROR; break;
// TODO: add other exceptions
default:
panic("unexpected interrupt/exception");
default MSG("unrecognized interrupt/exception")
ev.event = _EVENT_ERROR;
ev.cause = tf->err;
break;
}