Differential D13797 Diff 37651 sys/amd64/ia32/ia32_syscall.c

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sys/amd64/ia32/ia32_syscall.c

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#include <machine/sysarch.h>		#include <machine/sysarch.h>
#include <machine/frame.h>		#include <machine/frame.h>
#include <machine/md_var.h>		#include <machine/md_var.h>
#include <machine/pcb.h>		#include <machine/pcb.h>
#include <machine/cpufunc.h>		#include <machine/cpufunc.h>

#define IDTVEC(name) __CONCAT(X,name)		#define IDTVEC(name) __CONCAT(X,name)

extern inthand_t IDTVEC(int0x80_syscall), IDTVEC(rsvd);		extern inthand_t IDTVEC(int0x80_syscall), IDTVEC(int0x80_syscall_pti),
		IDTVEC(rsvd), IDTVEC(rsvd_pti);

void ia32_syscall(struct trapframe frame); / Called from asm code */		void ia32_syscall(struct trapframe frame); / Called from asm code */

void		void
ia32_set_syscall_retval(struct thread *td, int error)		ia32_set_syscall_retval(struct thread *td, int error)
{		{

cpu_set_syscall_retval(td, error);		cpu_set_syscall_retval(td, error);
▲ Show 20 Lines • Show All 96 Lines • ▼ Show 20 Lines	ia32_syscall(struct trapframe *frame)

syscallret(td, error);		syscallret(td, error);
}		}

static void		static void
ia32_syscall_enable(void *dummy)		ia32_syscall_enable(void *dummy)
{		{

setidt(IDT_SYSCALL, &IDTVEC(int0x80_syscall), SDT_SYSIGT, SEL_UPL, 0);		setidt(IDT_SYSCALL, pti ? &IDTVEC(int0x80_syscall_pti) :
		&IDTVEC(int0x80_syscall), SDT_SYSIGT, SEL_UPL, 0);
}		}

static void		static void
ia32_syscall_disable(void *dummy)		ia32_syscall_disable(void *dummy)
{		{

setidt(IDT_SYSCALL, &IDTVEC(rsvd), SDT_SYSIGT, SEL_KPL, 0);		setidt(IDT_SYSCALL, pti ? &IDTVEC(rsvd_pti) : &IDTVEC(rsvd),
		SDT_SYSIGT, SEL_KPL, 0);
}		}

SYSINIT(ia32_syscall, SI_SUB_EXEC, SI_ORDER_ANY, ia32_syscall_enable, NULL);		SYSINIT(ia32_syscall, SI_SUB_EXEC, SI_ORDER_ANY, ia32_syscall_enable, NULL);
SYSUNINIT(ia32_syscall, SI_SUB_EXEC, SI_ORDER_ANY, ia32_syscall_disable, NULL);		SYSUNINIT(ia32_syscall, SI_SUB_EXEC, SI_ORDER_ANY, ia32_syscall_disable, NULL);

#ifdef COMPAT_43		#ifdef COMPAT_43
int		int
setup_lcall_gate(void)		setup_lcall_gate(void)
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