diff options
| author | Ian Moffett <ian@osmora.org> | 2024-03-10 19:55:30 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-03-10 19:55:30 -0400 |
| commit | 991f1167df58616f4275c290fd0aa14baf7861f8 (patch) | |
| tree | 9653bf01bb12985c5008baef1df627866dc16b13 /sys/arch | |
| parent | 2d0d7a6f61899fa7263edf63c019e53a0278928a (diff) | |
kernel/amd64: trap: Add stack-segment fault ISR
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/amd64/amd64/machdep.c | 1 | ||||
| -rw-r--r-- | sys/arch/amd64/amd64/trap.S | 10 | ||||
| -rw-r--r-- | sys/arch/amd64/amd64/trap.c | 10 |
3 files changed, 19 insertions, 2 deletions
diff --git a/sys/arch/amd64/amd64/machdep.c b/sys/arch/amd64/amd64/machdep.c index 6342aab..e5fe83e 100644 --- a/sys/arch/amd64/amd64/machdep.c +++ b/sys/arch/amd64/amd64/machdep.c @@ -78,6 +78,7 @@ interrupts_init(void) idt_set_desc(0x8, IDT_TRAP_GATE_FLAGS, ISR(double_fault), 0); idt_set_desc(0xA, IDT_TRAP_GATE_FLAGS, ISR(invl_tss), 0); idt_set_desc(0xB, IDT_TRAP_GATE_FLAGS, ISR(segnp), 0); + idt_set_desc(0xC, IDT_TRAP_GATE_FLAGS, ISR(ss_fault), 0); idt_set_desc(0xD, IDT_TRAP_GATE_FLAGS, ISR(general_prot), 0); idt_set_desc(0xE, IDT_TRAP_GATE_FLAGS, ISR(page_fault), 0); idt_load(); diff --git a/sys/arch/amd64/amd64/trap.S b/sys/arch/amd64/amd64/trap.S index 5a77955..66dd2a9 100644 --- a/sys/arch/amd64/amd64/trap.S +++ b/sys/arch/amd64/amd64/trap.S @@ -144,3 +144,13 @@ nmi: /* TODO */ cli hlt + +.globl ss_fault +ss_fault: + push_trapframe_ec $TRAP_SS + + handle_trap + + /* TODO */ + cli + hlt diff --git a/sys/arch/amd64/amd64/trap.c b/sys/arch/amd64/amd64/trap.c index b73048d..c1cff56 100644 --- a/sys/arch/amd64/amd64/trap.c +++ b/sys/arch/amd64/amd64/trap.c @@ -44,7 +44,8 @@ static const char *trap_type[] = { [TRAP_SEGNP] = "segment not present", [TRAP_PROTFLT] = "general protection", [TRAP_PAGEFLT] = "page fault", - [TRAP_NMI] = "non-maskable interrupt" + [TRAP_NMI] = "non-maskable interrupt", + [TRAP_SS] = "stack-segment fault" }; static const int TRAP_COUNT = __ARRAY_COUNT(trap_type); @@ -54,12 +55,17 @@ dbg_errcode(struct trapframe *tf) { uint64_t ec = tf->error_code; - if (tf->trapno == TRAP_PAGEFLT) { + switch (tf->trapno) { + case TRAP_PAGEFLT: kprintf("bits (pwui): %c%c%c%c\n", __TEST(ec, __BIT(0)) ? 'p' : '-', __TEST(ec, __BIT(1)) ? 'w' : '-', __TEST(ec, __BIT(2)) ? 'u' : '-', __TEST(ec, __BIT(4)) ? 'i' : '-'); + break; + case TRAP_SS: + kprintf("ss: 0x%x\n", ec); + break; } } |