ia32_syscall.c (937d37fc6c80b2171091fc773eb40bab53d84648) ia32_syscall.c (bd50262f705c4fed70ea94d16a0f19b5f5497cf2)
1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (C) 1994, David Greenman
5 * Copyright (c) 1990, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by

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90#include <machine/sysarch.h>
91#include <machine/frame.h>
92#include <machine/md_var.h>
93#include <machine/pcb.h>
94#include <machine/cpufunc.h>
95
96#define IDTVEC(name) __CONCAT(X,name)
97
1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (C) 1994, David Greenman
5 * Copyright (c) 1990, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by

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90#include <machine/sysarch.h>
91#include <machine/frame.h>
92#include <machine/md_var.h>
93#include <machine/pcb.h>
94#include <machine/cpufunc.h>
95
96#define IDTVEC(name) __CONCAT(X,name)
97
98extern inthand_t IDTVEC(int0x80_syscall), IDTVEC(rsvd);
98extern inthand_t IDTVEC(int0x80_syscall), IDTVEC(int0x80_syscall_pti),
99 IDTVEC(rsvd), IDTVEC(rsvd_pti);
99
100void ia32_syscall(struct trapframe *frame); /* Called from asm code */
101
102void
103ia32_set_syscall_retval(struct thread *td, int error)
104{
105
106 cpu_set_syscall_retval(td, error);

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203
204 syscallret(td, error);
205}
206
207static void
208ia32_syscall_enable(void *dummy)
209{
210
100
101void ia32_syscall(struct trapframe *frame); /* Called from asm code */
102
103void
104ia32_set_syscall_retval(struct thread *td, int error)
105{
106
107 cpu_set_syscall_retval(td, error);

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204
205 syscallret(td, error);
206}
207
208static void
209ia32_syscall_enable(void *dummy)
210{
211
211 setidt(IDT_SYSCALL, &IDTVEC(int0x80_syscall), SDT_SYSIGT, SEL_UPL, 0);
212 setidt(IDT_SYSCALL, pti ? &IDTVEC(int0x80_syscall_pti) :
213 &IDTVEC(int0x80_syscall), SDT_SYSIGT, SEL_UPL, 0);
212}
213
214static void
215ia32_syscall_disable(void *dummy)
216{
217
214}
215
216static void
217ia32_syscall_disable(void *dummy)
218{
219
218 setidt(IDT_SYSCALL, &IDTVEC(rsvd), SDT_SYSIGT, SEL_KPL, 0);
220 setidt(IDT_SYSCALL, pti ? &IDTVEC(rsvd_pti) : &IDTVEC(rsvd),
221 SDT_SYSIGT, SEL_KPL, 0);
219}
220
221SYSINIT(ia32_syscall, SI_SUB_EXEC, SI_ORDER_ANY, ia32_syscall_enable, NULL);
222SYSUNINIT(ia32_syscall, SI_SUB_EXEC, SI_ORDER_ANY, ia32_syscall_disable, NULL);
223
224#ifdef COMPAT_43
225int
226setup_lcall_gate(void)

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223
224SYSINIT(ia32_syscall, SI_SUB_EXEC, SI_ORDER_ANY, ia32_syscall_enable, NULL);
225SYSUNINIT(ia32_syscall, SI_SUB_EXEC, SI_ORDER_ANY, ia32_syscall_disable, NULL);
226
227#ifdef COMPAT_43
228int
229setup_lcall_gate(void)

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