*
* @APPLE_LICENSE_HEADER_START@
*
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License"). You may not use this file except in compliance with the
+ * License. Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
*
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#include <i386/cpu_data.h>
#include <i386/mp_desc.h>
-#ifdef MACH_BSD
-extern int trap_unix_syscall(void), trap_mach25_syscall(void),
- trap_machdep_syscall(void), syscall(void);
-#endif
-
-struct fake_descriptor gdt[GDTSZ] = {
-/* 0x000 */ { 0, 0, 0, 0 }, /* always NULL */
-/* 0x008 */ { 0,
- 0xfffff,
- SZ_32|SZ_G,
- ACC_P|ACC_PL_K|ACC_CODE_R
- }, /* kernel code */
-/* 0x010 */ { 0,
- 0xfffff,
- SZ_32|SZ_G,
- ACC_P|ACC_PL_K|ACC_DATA_W
- }, /* kernel data */
-/* 0x018 */ { (unsigned int)ldt,
- LDTSZ*sizeof(struct fake_descriptor)-1,
- 0,
- ACC_P|ACC_PL_K|ACC_LDT
- }, /* local descriptor table */
-/* 0x020 */ { (unsigned int)&ktss,
- sizeof(struct i386_tss)-1,
- 0,
- ACC_P|ACC_PL_K|ACC_TSS
- }, /* TSS for this processor */
-#ifdef MACH_BSD
-/* 0x28 */ { (unsigned int) &trap_unix_syscall,
- KERNEL_CS,
- 0, /* no parameters */
- ACC_P|ACC_PL_U|ACC_CALL_GATE
- },
-/* 0x30 */ { (unsigned int) &trap_mach25_syscall,
- KERNEL_CS,
- 0, /* no parameters */
- ACC_P|ACC_PL_U|ACC_CALL_GATE
- },
-/* 0x38 */ { (unsigned int) &trap_machdep_syscall,
- KERNEL_CS,
- 0, /* no parameters */
- ACC_P|ACC_PL_U|ACC_CALL_GATE
- },
-#else
-/* 0x028 */ { 0, 0, 0, 0 }, /* per-thread LDT */
-/* 0x030 */ { 0, 0, 0, 0 }, /* per-thread TSS for IO bitmap */
-/* 0x038 */ { 0, 0, 0, 0 },
-#endif
-/* 0x040 */ { 0, 0, 0, 0 },
-/* 0x048 */ { (unsigned int)&cpu_data_master,
- sizeof(cpu_data_t)-1,
- SZ_32,
- ACC_P|ACC_PL_K|ACC_DATA_W
- }, /* per-CPU current thread address */
+struct fake_descriptor master_gdt[GDTSZ] __attribute__ ((aligned (4096))) = {
+ [SEL_TO_INDEX(KERNEL_CS)] { /* kernel code */
+ 0,
+ 0xfffff,
+ SZ_32|SZ_G,
+ ACC_P|ACC_PL_K|ACC_CODE_R,
+ },
+ [SEL_TO_INDEX(KERNEL_DS)] { /* kernel data */
+ 0,
+ 0xfffff,
+ SZ_32|SZ_G,
+ ACC_P|ACC_PL_K|ACC_DATA_W
+ },
+ [SEL_TO_INDEX(KERNEL_LDT)] { /* local descriptor table */
+ (uint32_t) &master_ldt,
+ LDTSZ_MIN*sizeof(struct fake_descriptor)-1,
+ 0,
+ ACC_P|ACC_PL_K|ACC_LDT
+ }, /* The slot KERNEL_LDT_2 is reserved. */
+ [SEL_TO_INDEX(KERNEL_TSS)] { /* TSS for this processor */
+ (uint32_t) &master_ktss,
+ sizeof(struct i386_tss)-1,
+ 0,
+ ACC_P|ACC_PL_K|ACC_TSS
+ }, /* The slot KERNEL_TSS_2 is reserved. */
+ [SEL_TO_INDEX(CPU_DATA_GS)] { /* per-CPU current thread address */
+ (uint32_t) &cpu_data_master,
+ sizeof(cpu_data_t)-1,
+ SZ_32,
+ ACC_P|ACC_PL_K|ACC_DATA_W
+ },
+ [SEL_TO_INDEX(USER_LDT)] { /* user local descriptor table */
+ (uint32_t) &master_ldt,
+ LDTSZ_MIN*sizeof(struct fake_descriptor)-1,
+ 0,
+ ACC_P|ACC_PL_K|ACC_LDT
+ },
+ [SEL_TO_INDEX(KERNEL64_CS)] { /* kernel 64-bit code */
+ 0,
+ 0xfffff,
+ SZ_64|SZ_G,
+ ACC_P|ACC_PL_K|ACC_CODE_R
+ },
+ [SEL_TO_INDEX(KERNEL64_SS)] { /* kernel 64-bit syscall stack */
+ 0,
+ 0xfffff,
+ SZ_32|SZ_G,
+ ACC_P|ACC_PL_K|ACC_DATA_W
+ },
#if MACH_KDB
-/* 0x050 */ { (unsigned int)&dbtss,
- sizeof(struct i386_tss)-1,
- 0,
- ACC_P|ACC_PL_K|ACC_TSS
- } /* TSS for this processor */
+ [SEL_TO_INDEX(DEBUG_TSS)] { /* TSS for this processor */
+ (uint32_t)&master_dbtss,
+ sizeof(struct i386_tss)-1,
+ 0,
+ ACC_P|ACC_PL_K|ACC_TSS
+ },
#endif /* MACH_KDB */
};
projects / apple / xnu.git / blobdiff