ia32_exception.S (ff265077cf2b2694aa0e7b701d30d853404a015a) ia32_exception.S (bd50262f705c4fed70ea94d16a0f19b5f5497cf2)
1/*-
2 * Copyright (c) 2003 Peter Wemm
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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35 * Call gate entry for FreeBSD ELF and Linux/NetBSD syscall (int 0x80)
36 *
37 * This is a SDT_SYSIDT entry point (unlike the i386 port) so that we
38 * can do a swapgs before enabling interrupts. This is critical because
39 * if we took an interrupt before swapgs, the interrupt code would see
40 * that it originated in supervisor mode and skip the swapgs.
41 */
42 SUPERALIGN_TEXT
1/*-
2 * Copyright (c) 2003 Peter Wemm
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 26 unchanged lines hidden (view full) ---

35 * Call gate entry for FreeBSD ELF and Linux/NetBSD syscall (int 0x80)
36 *
37 * This is a SDT_SYSIDT entry point (unlike the i386 port) so that we
38 * can do a swapgs before enabling interrupts. This is critical because
39 * if we took an interrupt before swapgs, the interrupt code would see
40 * that it originated in supervisor mode and skip the swapgs.
41 */
42 SUPERALIGN_TEXT
43IDTVEC(int0x80_syscall_pti)
44 PTI_UENTRY has_err=0
45 jmp int0x80_syscall_common
46 SUPERALIGN_TEXT
43IDTVEC(int0x80_syscall)
44 swapgs
47IDTVEC(int0x80_syscall)
48 swapgs
49int0x80_syscall_common:
45 pushq $2 /* sizeof "int 0x80" */
46 subq $TF_ERR,%rsp /* skip over tf_trapno */
47 movq %rdi,TF_RDI(%rsp)
48 movq PCPU(CURPCB),%rdi
49 andl $~PCB_FULL_IRET,PCB_FLAGS(%rdi)
50 pushq $2 /* sizeof "int 0x80" */
51 subq $TF_ERR,%rsp /* skip over tf_trapno */
52 movq %rdi,TF_RDI(%rsp)
53 movq PCPU(CURPCB),%rdi
54 andl $~PCB_FULL_IRET,PCB_FLAGS(%rdi)
50 movw %fs,TF_FS(%rsp)
51 movw %gs,TF_GS(%rsp)
52 movw %es,TF_ES(%rsp)
53 movw %ds,TF_DS(%rsp)
55 SAVE_SEGS
54 sti
55 movq %rsi,TF_RSI(%rsp)
56 movq %rdx,TF_RDX(%rsp)
57 movq %rcx,TF_RCX(%rsp)
58 movq %r8,TF_R8(%rsp)
59 movq %r9,TF_R9(%rsp)
60 movq %rax,TF_RAX(%rsp)
61 movq %rbx,TF_RBX(%rsp)

--- 14 unchanged lines hidden --- 		56 sti
57 movq %rsi,TF_RSI(%rsp)
58 movq %rdx,TF_RDX(%rsp)
59 movq %rcx,TF_RCX(%rsp)
60 movq %r8,TF_R8(%rsp)
61 movq %r9,TF_R9(%rsp)
62 movq %rax,TF_RAX(%rsp)
63 movq %rbx,TF_RBX(%rsp)

--- 14 unchanged lines hidden ---