diff options
Diffstat (limited to 'libcpu/ia32/trap.c')
| -rw-r--r-- | libcpu/ia32/trap.c | 88 |
1 files changed, 44 insertions, 44 deletions
diff --git a/libcpu/ia32/trap.c b/libcpu/ia32/trap.c index 5e9a51d6d2..b3484cfd58 100644 --- a/libcpu/ia32/trap.c +++ b/libcpu/ia32/trap.c @@ -22,7 +22,7 @@ struct Gatedesc idt[256] = { {0}, }; struct Pseudodesc idt_pd = { - 0, sizeof(idt) - 1, (unsigned long) idt, + 0, sizeof(idt) - 1, (unsigned long) idt, }; /* exception and interrupt handler table */ @@ -40,36 +40,36 @@ extern rt_isr_handler_t hdinterrupt_func[]; * */ void rt_hw_idt_init(void) -{ - extern void Xdefault; - int i, j, func; +{ + extern void Xdefault; + int i, j, func; + + // install a default handler + for (i = 0; i < sizeof(idt)/sizeof(idt[0]); i++) + SETGATE(idt[i], 0, GD_KT, &Xdefault, 0); + + /*install trap handler*/ + for(i = 0; i < 16; i++) + { + func = (int)trap_func[i]; + SETGATE(idt[i], 0, GD_KT, func, 0); + } - // install a default handler - for (i = 0; i < sizeof(idt)/sizeof(idt[0]); i++) - SETGATE(idt[i], 0, GD_KT, &Xdefault, 0); + func = (int)trap_func[3]; + SETGATE(idt[3], 0, GD_KT, func, 3); - /*install trap handler*/ - for(i = 0; i < 16; i++) - { - func = (int)trap_func[i]; - SETGATE(idt[i], 0, GD_KT, func, 0); - } + i = 0; - func = (int)trap_func[3]; - SETGATE(idt[3], 0, GD_KT, func, 3); + /*install exteral interrupt handler*/ + for(j = IRQ_OFFSET; j < IRQ_OFFSET + MAX_HANDLERS; j++) + { + func = (int)hdinterrupt_func[i]; + SETGATE(idt[j], 0, GD_KT, func, 0); + i++; + } - i = 0; - - /*install exteral interrupt handler*/ - for(j = IRQ_OFFSET; j < IRQ_OFFSET + MAX_HANDLERS; j++) - { - func = (int)hdinterrupt_func[i]; - SETGATE(idt[j], 0, GD_KT, func, 0); - i++; - } - - // Load the IDT - asm volatile("lidt idt_pd + 2"); + // Load the IDT + asm volatile("lidt idt_pd + 2"); } /** @@ -80,24 +80,24 @@ void rt_hw_idt_init(void) */ void rt_hw_trap_irq(int trapno) { - switch(trapno) - { - case T_DIVIDE: - rt_kprintf("Divide error interrupt\n"); - RT_ASSERT(0); - case T_PGFLT: - rt_kprintf("Page fault interrupt\n"); - RT_ASSERT(0); - case T_GPFLT: - rt_kprintf("General protection interrupt\n"); - RT_ASSERT(0); - case T_DEFAULT: - rt_hw_interrupt_handle(T_DEFAULT); - return; - } + switch(trapno) + { + case T_DIVIDE: + rt_kprintf("Divide error interrupt\n"); + RT_ASSERT(0); + case T_PGFLT: + rt_kprintf("Page fault interrupt\n"); + RT_ASSERT(0); + case T_GPFLT: + rt_kprintf("General protection interrupt\n"); + RT_ASSERT(0); + case T_DEFAULT: + rt_hw_interrupt_handle(T_DEFAULT); + return; + } - /*kernel bug if run here*/ - RT_ASSERT(0); + /*kernel bug if run here*/ + RT_ASSERT(0); } /*@}*/ |