mirror of
https://github.com/qemu/qemu.git
synced 2025-10-30 19:15:42 +00:00
76d0042bb2
cpu_get_pic_interrupt() is now unreachable from user-mode, delete the unnecessary stubs. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210911165434.531552-25-f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
|
|
* i386 cpu related code
|
|
*
|
|
* Copyright (c) 2013 Stacey Son <sson@FreeBSD.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "cpu.h"
|
|
#include "qemu.h"
|
|
#include "qemu/timer.h"
|
|
|
|
#include "target_arch.h"
|
|
|
|
static uint64_t *idt_table;
|
|
|
|
uint64_t cpu_get_tsc(CPUX86State *env)
|
|
{
|
|
return cpu_get_host_ticks();
|
|
}
|
|
|
|
void bsd_i386_write_dt(void *ptr, unsigned long addr, unsigned long limit,
|
|
int flags)
|
|
{
|
|
unsigned int e1, e2;
|
|
uint32_t *p;
|
|
e1 = (addr << 16) | (limit & 0xffff);
|
|
e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
|
|
e2 |= flags;
|
|
p = ptr;
|
|
p[0] = tswap32(e1);
|
|
p[1] = tswap32(e2);
|
|
}
|
|
|
|
|
|
static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
|
|
uint32_t addr, unsigned int sel)
|
|
{
|
|
uint32_t *p, e1, e2;
|
|
e1 = (addr & 0xffff) | (sel << 16);
|
|
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
|
|
p = ptr;
|
|
p[0] = tswap32(e1);
|
|
p[1] = tswap32(e2);
|
|
}
|
|
|
|
/* only dpl matters as we do only user space emulation */
|
|
void bsd_i386_set_idt(int n, unsigned int dpl)
|
|
{
|
|
set_gate(idt_table + n, 0, dpl, 0, 0);
|
|
}
|
|
|
|
void bsd_i386_set_idt_base(uint64_t base)
|
|
{
|
|
idt_table = g2h_untagged(base);
|
|
}
|
|
|