ptos/amd64+ke: Add system call groundwork + exit syscall

Signed-off-by: Chloe M. <chloe@mensia.org>
2026-07-15 21:20:35 +00:00
parent d72df46f64
commit d4390c6a1b
9 changed files with 146 additions and 0 deletions
@@ -38,6 +38,7 @@ InitInterrupts(VOID)
    MdIdtSetGate(0x0C, (UPTR)TrapStackSegmentFault, IDT_TRAP_GATE, 0);
    MdIdtSetGate(0x0D, (UPTR)TrapGeneralProtection, IDT_TRAP_GATE, 0);
    MdIdtSetGate(0x0E, (UPTR)TrapPageFault, IDT_TRAP_GATE, 0);
+    MdIdtSetGate(0x2E, (UPTR)TrapLegacySyscall, IDT_USER_GATE, 0);
    MdIdtLoad();
 }

@@ -151,3 +151,10 @@ LapicTmrIsr:
    call HalContextSwitch
    call MdLapicSendEoi
    INTR_EXIT()
+
+    .globl TrapLegacySyscall
+TrapLegacySyscall:
+    INTR_ENTRY($0x2C)
+    mov %rsp, %rdi
+    call MdSyscallDispatch
+    INTR_EXIT()