diff options
Diffstat (limited to 'lib/libvmmapi/vmmapi_freebsd.c')
| -rw-r--r-- | lib/libvmmapi/vmmapi_freebsd.c | 344 |
1 files changed, 0 insertions, 344 deletions
diff --git a/lib/libvmmapi/vmmapi_freebsd.c b/lib/libvmmapi/vmmapi_freebsd.c deleted file mode 100644 index e829febf0157..000000000000 --- a/lib/libvmmapi/vmmapi_freebsd.c +++ /dev/null @@ -1,344 +0,0 @@ -/*- - * SPDX-License-Identifier: BSD-2-Clause - * - * Copyright (c) 2011 NetApp, Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -#include <sys/types.h> - -#include <machine/specialreg.h> -#include <machine/segments.h> -#include <machine/vmm.h> - -#include <errno.h> -#include <string.h> - -#include "vmmapi.h" -#include "internal.h" - -#define I386_TSS_SIZE 104 - -#define DESC_PRESENT 0x00000080 -#define DESC_LONGMODE 0x00002000 -#define DESC_DEF32 0x00004000 -#define DESC_GRAN 0x00008000 -#define DESC_UNUSABLE 0x00010000 - -#define GUEST_NULL_SEL 0 -#define GUEST_CODE_SEL 1 -#define GUEST_DATA_SEL 2 -#define GUEST_TSS_SEL 3 -#define GUEST_GDTR_LIMIT64 (3 * 8 - 1) - -static struct segment_descriptor i386_gdt[] = { - {}, /* NULL */ - { .sd_lolimit = 0xffff, .sd_type = SDT_MEMER, /* CODE */ - .sd_p = 1, .sd_hilimit = 0xf, .sd_def32 = 1, .sd_gran = 1 }, - { .sd_lolimit = 0xffff, .sd_type = SDT_MEMRW, /* DATA */ - .sd_p = 1, .sd_hilimit = 0xf, .sd_def32 = 1, .sd_gran = 1 }, - { .sd_lolimit = I386_TSS_SIZE - 1, /* TSS */ - .sd_type = SDT_SYS386TSS, .sd_p = 1 } -}; - -/* - * Setup the 'vcpu' register set such that it will begin execution at - * 'eip' in flat mode. - */ -int -vm_setup_freebsd_registers_i386(struct vcpu *vcpu, uint32_t eip, - uint32_t gdtbase, uint32_t esp) -{ - uint64_t cr0, rflags, desc_base; - uint32_t desc_access, desc_limit, tssbase; - uint16_t gsel; - struct segment_descriptor *gdt; - int error, tmp; - - /* A 32-bit guest requires unrestricted mode. */ - error = vm_get_capability(vcpu, VM_CAP_UNRESTRICTED_GUEST, &tmp); - if (error) - goto done; - error = vm_set_capability(vcpu, VM_CAP_UNRESTRICTED_GUEST, 1); - if (error) - goto done; - - cr0 = CR0_PE | CR0_NE; - if ((error = vm_set_register(vcpu, VM_REG_GUEST_CR0, cr0)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_CR4, 0)) != 0) - goto done; - - /* - * Forcing EFER to 0 causes bhyve to clear the "IA-32e guest - * mode" entry control. - */ - if ((error = vm_set_register(vcpu, VM_REG_GUEST_EFER, 0))) - goto done; - - gdt = vm_map_gpa(vcpu->ctx, gdtbase, 0x1000); - if (gdt == NULL) - return (EFAULT); - memcpy(gdt, i386_gdt, sizeof(i386_gdt)); - desc_base = gdtbase; - desc_limit = sizeof(i386_gdt) - 1; - error = vm_set_desc(vcpu, VM_REG_GUEST_GDTR, - desc_base, desc_limit, 0); - if (error != 0) - goto done; - - /* Place the TSS one page above the GDT. */ - tssbase = gdtbase + 0x1000; - gdt[3].sd_lobase = tssbase; - - rflags = 0x2; - error = vm_set_register(vcpu, VM_REG_GUEST_RFLAGS, rflags); - if (error) - goto done; - - desc_base = 0; - desc_limit = 0xffffffff; - desc_access = DESC_GRAN | DESC_DEF32 | DESC_PRESENT | SDT_MEMERA; - error = vm_set_desc(vcpu, VM_REG_GUEST_CS, - desc_base, desc_limit, desc_access); - - desc_access = DESC_GRAN | DESC_DEF32 | DESC_PRESENT | SDT_MEMRWA; - error = vm_set_desc(vcpu, VM_REG_GUEST_DS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_ES, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_FS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_GS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_SS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - desc_base = tssbase; - desc_limit = I386_TSS_SIZE - 1; - desc_access = DESC_PRESENT | SDT_SYS386BSY; - error = vm_set_desc(vcpu, VM_REG_GUEST_TR, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - - error = vm_set_desc(vcpu, VM_REG_GUEST_LDTR, 0, 0, - DESC_UNUSABLE); - if (error) - goto done; - - gsel = GSEL(GUEST_CODE_SEL, SEL_KPL); - if ((error = vm_set_register(vcpu, VM_REG_GUEST_CS, gsel)) != 0) - goto done; - - gsel = GSEL(GUEST_DATA_SEL, SEL_KPL); - if ((error = vm_set_register(vcpu, VM_REG_GUEST_DS, gsel)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_ES, gsel)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_FS, gsel)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_GS, gsel)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_SS, gsel)) != 0) - goto done; - - gsel = GSEL(GUEST_TSS_SEL, SEL_KPL); - if ((error = vm_set_register(vcpu, VM_REG_GUEST_TR, gsel)) != 0) - goto done; - - /* LDTR is pointing to the null selector */ - if ((error = vm_set_register(vcpu, VM_REG_GUEST_LDTR, 0)) != 0) - goto done; - - /* entry point */ - if ((error = vm_set_register(vcpu, VM_REG_GUEST_RIP, eip)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_RSP, esp)) != 0) - goto done; - - error = 0; -done: - return (error); -} - -void -vm_setup_freebsd_gdt(uint64_t *gdtr) -{ - gdtr[GUEST_NULL_SEL] = 0; - gdtr[GUEST_CODE_SEL] = 0x0020980000000000; - gdtr[GUEST_DATA_SEL] = 0x0000900000000000; -} - -/* - * Setup the 'vcpu' register set such that it will begin execution at - * 'rip' in long mode. - */ -int -vm_setup_freebsd_registers(struct vcpu *vcpu, - uint64_t rip, uint64_t cr3, uint64_t gdtbase, - uint64_t rsp) -{ - int error; - uint64_t cr0, cr4, efer, rflags, desc_base; - uint32_t desc_access, desc_limit; - uint16_t gsel; - - cr0 = CR0_PE | CR0_PG | CR0_NE; - if ((error = vm_set_register(vcpu, VM_REG_GUEST_CR0, cr0)) != 0) - goto done; - - cr4 = CR4_PAE; - if ((error = vm_set_register(vcpu, VM_REG_GUEST_CR4, cr4)) != 0) - goto done; - - efer = EFER_LME | EFER_LMA; - if ((error = vm_set_register(vcpu, VM_REG_GUEST_EFER, efer))) - goto done; - - rflags = 0x2; - error = vm_set_register(vcpu, VM_REG_GUEST_RFLAGS, rflags); - if (error) - goto done; - - desc_base = 0; - desc_limit = 0; - desc_access = 0x0000209B; - error = vm_set_desc(vcpu, VM_REG_GUEST_CS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - desc_access = 0x00000093; - error = vm_set_desc(vcpu, VM_REG_GUEST_DS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_ES, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_FS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_GS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_SS, - desc_base, desc_limit, desc_access); - if (error) - goto done; - - /* - * XXX TR is pointing to null selector even though we set the - * TSS segment to be usable with a base address and limit of 0. - */ - desc_access = 0x0000008b; - error = vm_set_desc(vcpu, VM_REG_GUEST_TR, 0, 0, desc_access); - if (error) - goto done; - - error = vm_set_desc(vcpu, VM_REG_GUEST_LDTR, 0, 0, - DESC_UNUSABLE); - if (error) - goto done; - - gsel = GSEL(GUEST_CODE_SEL, SEL_KPL); - if ((error = vm_set_register(vcpu, VM_REG_GUEST_CS, gsel)) != 0) - goto done; - - gsel = GSEL(GUEST_DATA_SEL, SEL_KPL); - if ((error = vm_set_register(vcpu, VM_REG_GUEST_DS, gsel)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_ES, gsel)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_FS, gsel)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_GS, gsel)) != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_SS, gsel)) != 0) - goto done; - - /* XXX TR is pointing to the null selector */ - if ((error = vm_set_register(vcpu, VM_REG_GUEST_TR, 0)) != 0) - goto done; - - /* LDTR is pointing to the null selector */ - if ((error = vm_set_register(vcpu, VM_REG_GUEST_LDTR, 0)) != 0) - goto done; - - /* entry point */ - if ((error = vm_set_register(vcpu, VM_REG_GUEST_RIP, rip)) != 0) - goto done; - - /* page table base */ - if ((error = vm_set_register(vcpu, VM_REG_GUEST_CR3, cr3)) != 0) - goto done; - - desc_base = gdtbase; - desc_limit = GUEST_GDTR_LIMIT64; - error = vm_set_desc(vcpu, VM_REG_GUEST_GDTR, - desc_base, desc_limit, 0); - if (error != 0) - goto done; - - if ((error = vm_set_register(vcpu, VM_REG_GUEST_RSP, rsp)) != 0) - goto done; - - error = 0; -done: - return (error); -} |