7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 




  27 #include <sys/asm_linkage.h>
  28 #ifndef __xpv
  29 #include <sys/xpv_support.h>
  30 #endif
  31 #include <sys/hypervisor.h>
  32 
  33 /*
  34  * Hypervisor "system calls"
  35  *
  36  * i386
  37  *      %eax == call number
  38  *      args in registers (%ebx, %ecx, %edx, %esi, %edi)
  39  *
  40  * amd64
  41  *      %rax == call number
  42  *      args in registers (%rdi, %rsi, %rdx, %r10, %r8, %r9)
  43  *
  44  * Note that for amd64 we use %r10 instead of %rcx for passing 4th argument
  45  * as in C calling convention since the "syscall" instruction clobbers %rcx.
  46  *

 147 
 148         .data
 149         .align  HYPERCALL_SHINFO_PAGESIZE
 150         .globl  hypercall_shared_info_page
 151         .type   hypercall_shared_info_page, @object
 152         .size   hypercall_shared_info_page, HYPERCALL_SHINFO_PAGESIZE
 153 hypercall_shared_info_page:
 154         .skip   HYPERCALL_SHINFO_PAGESIZE
 155 
 156         .text
 157         .align  HYPERCALL_PAGESIZE
 158         .globl  hypercall_page
 159         .type   hypercall_page, @function
 160 hypercall_page:
 161         .skip   HYPERCALL_PAGESIZE
 162         .size   hypercall_page, HYPERCALL_PAGESIZE
 163 #if defined(__amd64)
 164 #define TRAP_INSTR                      \
 165         shll    $5, %eax;               \
 166         addq    $hypercall_page, %rax;  \
 167         jmp     *%rax
 168 #else
 169 #define TRAP_INSTR                      \
 170         shll    $5, %eax;               \
 171         addl    $hypercall_page, %eax;  \
 172         call    *%eax
 173 #endif
 174 
 175 #else /* !_xpv */
 176 
 177 #if defined(__amd64)
 178 #define TRAP_INSTR      syscall
 179 #elif defined(__i386)
 180 #define TRAP_INSTR      int $0x82
 181 #endif
 182 #endif /* !__xpv */
 183 
 184 
 185 #if defined(__amd64) 
 186 
 187         ENTRY_NP(__hypercall0)

   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 /*
  28  * Copyright 2019 Joyent, Inc.
  29  */
  30 
  31 #include <sys/asm_linkage.h>
  32 #ifndef __xpv
  33 #include <sys/xpv_support.h>
  34 #endif
  35 #include <sys/hypervisor.h>
  36 
  37 /*
  38  * Hypervisor "system calls"
  39  *
  40  * i386
  41  *      %eax == call number
  42  *      args in registers (%ebx, %ecx, %edx, %esi, %edi)
  43  *
  44  * amd64
  45  *      %rax == call number
  46  *      args in registers (%rdi, %rsi, %rdx, %r10, %r8, %r9)
  47  *
  48  * Note that for amd64 we use %r10 instead of %rcx for passing 4th argument
  49  * as in C calling convention since the "syscall" instruction clobbers %rcx.
  50  *

 151 
 152         .data
 153         .align  HYPERCALL_SHINFO_PAGESIZE
 154         .globl  hypercall_shared_info_page
 155         .type   hypercall_shared_info_page, @object
 156         .size   hypercall_shared_info_page, HYPERCALL_SHINFO_PAGESIZE
 157 hypercall_shared_info_page:
 158         .skip   HYPERCALL_SHINFO_PAGESIZE
 159 
 160         .text
 161         .align  HYPERCALL_PAGESIZE
 162         .globl  hypercall_page
 163         .type   hypercall_page, @function
 164 hypercall_page:
 165         .skip   HYPERCALL_PAGESIZE
 166         .size   hypercall_page, HYPERCALL_PAGESIZE
 167 #if defined(__amd64)
 168 #define TRAP_INSTR                      \
 169         shll    $5, %eax;               \
 170         addq    $hypercall_page, %rax;  \
 171         INDIRECT_JMP_REG(rax);
 172 #else
 173 #define TRAP_INSTR                      \
 174         shll    $5, %eax;               \
 175         addl    $hypercall_page, %eax;  \
 176         call    *%eax
 177 #endif
 178 
 179 #else /* !_xpv */
 180 
 181 #if defined(__amd64)
 182 #define TRAP_INSTR      syscall
 183 #elif defined(__i386)
 184 #define TRAP_INSTR      int $0x82
 185 #endif
 186 #endif /* !__xpv */
 187 
 188 
 189 #if defined(__amd64)
 190 
 191         ENTRY_NP(__hypercall0)