/*
* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @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. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
+ * 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.
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ 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_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
#include <i386/iopb_entries.h>
#include <i386/mp_desc.h>
#include <i386/cpu_data.h>
-#include <i386/machine_routines.h>
+
/*
* Maps state flavor to number of words in the state:
*/
+__private_extern__
unsigned int _MachineStateCount[] = {
- /* FLAVOR_LIST */
- 0,
- x86_THREAD_STATE32_COUNT,
- x86_FLOAT_STATE32_COUNT,
- x86_EXCEPTION_STATE32_COUNT,
- x86_THREAD_STATE64_COUNT,
- x86_FLOAT_STATE64_COUNT,
- x86_EXCEPTION_STATE64_COUNT,
- x86_THREAD_STATE_COUNT,
- x86_FLOAT_STATE_COUNT,
- x86_EXCEPTION_STATE_COUNT,
- 0,
- x86_SAVED_STATE32_COUNT,
- x86_SAVED_STATE64_COUNT,
- x86_DEBUG_STATE32_COUNT,
- x86_DEBUG_STATE64_COUNT,
- x86_DEBUG_STATE_COUNT
+ /* FLAVOR_LIST */ 0,
+ i386_NEW_THREAD_STATE_COUNT,
+ i386_FLOAT_STATE_COUNT,
+ i386_ISA_PORT_MAP_STATE_COUNT,
+ i386_V86_ASSIST_STATE_COUNT,
+ i386_REGS_SEGS_STATE_COUNT,
+ i386_THREAD_SYSCALL_STATE_COUNT,
+ /* THREAD_STATE_NONE */ 0,
+ i386_SAVED_STATE_COUNT,
};
-zone_t iss_zone32; /* zone for 32bit saved_state area */
-zone_t iss_zone64; /* zone for 64bit saved_state area */
-zone_t ids_zone32; /* zone for 32bit debug_state area */
-zone_t ids_zone64; /* zone for 64bit debug_state area */
-
-
/* Forward */
void act_machine_throughcall(thread_t thr_act);
extern void Load_context(
thread_t thread);
-
-static void
-get_exception_state32(thread_t thread, x86_exception_state32_t *es);
-
-static void
-get_exception_state64(thread_t thread, x86_exception_state64_t *es);
-
-static void
-get_thread_state32(thread_t thread, x86_thread_state32_t *ts);
-
-static void
-get_thread_state64(thread_t thread, x86_thread_state64_t *ts);
-
-static int
-set_thread_state32(thread_t thread, x86_thread_state32_t *ts);
-
-static int
-set_thread_state64(thread_t thread, x86_thread_state64_t *ts);
-
-/*
- * Don't let an illegal value for dr7 get set. Specifically,
- * check for undefined settings. Setting these bit patterns
- * result in undefined behaviour and can lead to an unexpected
- * TRCTRAP.
- */
-static boolean_t
-dr7_is_valid(uint32_t *dr7)
-{
- int i;
- uint32_t mask1, mask2;
-
- /*
- * If the DE bit is set in CR4, R/W0-3 can be pattern
- * "10B" to indicate i/o reads and write
- */
- if (!(get_cr4() & CR4_DE))
- for (i = 0, mask1 = 0x3<<16, mask2 = 0x2<<16; i < 4;
- i++, mask1 <<= 4, mask2 <<= 4)
- if ((*dr7 & mask1) == mask2)
- return (FALSE);
-
- /*
- * len0-3 pattern "10B" is ok for len on 64-bit.
- */
- if (current_cpu_datap()->cpu_is64bit == TRUE)
- for (i = 0, mask1 = 0x3<<18, mask2 = 0x2<<18; i < 4;
- i++, mask1 <<= 4, mask2 <<= 4)
- if ((*dr7 & mask1) == mask2)
- return (FALSE);
-
- /*
- * if we are doing an instruction execution break (indicated
- * by r/w[x] being "00B"), then the len[x] must also be set
- * to "00B"
- */
- for (i = 0; i < 4; i++)
- if (((((*dr7 >> (16 + i*4))) & 0x3) == 0) &&
- ((((*dr7 >> (18 + i*4))) & 0x3) != 0))
- return (FALSE);
-
- /*
- * Intel docs have these bits fixed.
- */
- *dr7 |= 0x1 << 10; /* set bit 10 to 1 */
- *dr7 &= ~(0x1 << 11); /* set bit 11 to 0 */
- *dr7 &= ~(0x1 << 12); /* set bit 12 to 0 */
- *dr7 &= ~(0x1 << 14); /* set bit 14 to 0 */
- *dr7 &= ~(0x1 << 15); /* set bit 15 to 0 */
-
- /*
- * We don't allow anything to set the global breakpoints.
- */
-
- if (*dr7 & 0x2)
- return (FALSE);
-
- if (*dr7 & (0x2<<2))
- return (FALSE);
-
- if (*dr7 & (0x2<<4))
- return (FALSE);
-
- if (*dr7 & (0x2<<6))
- return (FALSE);
-
- return (TRUE);
-}
-
-static inline void
-set_live_debug_state32(cpu_data_t *cdp, x86_debug_state32_t *ds)
-{
- __asm__ volatile ("movl %0,%%db0" : :"r" (ds->dr0));
- __asm__ volatile ("movl %0,%%db1" : :"r" (ds->dr1));
- __asm__ volatile ("movl %0,%%db2" : :"r" (ds->dr2));
- __asm__ volatile ("movl %0,%%db3" : :"r" (ds->dr3));
- if (cpu_mode_is64bit())
- cdp->cpu_dr7 = ds->dr7;
-}
-
-extern void set_64bit_debug_regs(x86_debug_state64_t *ds);
-
-static inline void
-set_live_debug_state64(cpu_data_t *cdp, x86_debug_state64_t *ds)
-{
- /*
- * We need to enter 64-bit mode in order to set the full
- * width of these registers
- */
- set_64bit_debug_regs(ds);
- cdp->cpu_dr7 = ds->dr7;
-}
-
-static kern_return_t
-set_debug_state32(thread_t thread, x86_debug_state32_t *ds)
-{
- x86_debug_state32_t *ids;
- pcb_t pcb;
-
- pcb = thread->machine.pcb;
- ids = pcb->ids;
-
- if (ids == NULL) {
- ids = zalloc(ids_zone32);
- bzero(ids, sizeof *ids);
-
- simple_lock(&pcb->lock);
- /* make sure it wasn't already alloc()'d elsewhere */
- if (pcb->ids == NULL) {
- pcb->ids = ids;
- simple_unlock(&pcb->lock);
- } else {
- simple_unlock(&pcb->lock);
- zfree(ids_zone32, ids);
- }
- }
-
- if (!dr7_is_valid(&ds->dr7))
- goto err;
-
- /*
- * Only allow local breakpoints and make sure they are not
- * in the trampoline code.
- */
-
- if (ds->dr7 & 0x1)
- if (ds->dr0 >= (unsigned long)HIGH_MEM_BASE)
- goto err;
-
- if (ds->dr7 & (0x1<<2))
- if (ds->dr1 >= (unsigned long)HIGH_MEM_BASE)
- goto err;
-
- if (ds->dr7 & (0x1<<4))
- if (ds->dr2 >= (unsigned long)HIGH_MEM_BASE)
- goto err;
-
- if (ds->dr7 & (0x1<<6))
- if (ds->dr3 >= (unsigned long)HIGH_MEM_BASE)
- goto err;
-
- ids->dr0 = ds->dr0;
- ids->dr1 = ds->dr1;
- ids->dr2 = ds->dr2;
- ids->dr3 = ds->dr3;
- ids->dr6 = ds->dr6;
- ids->dr7 = ds->dr7;
-
- return (KERN_SUCCESS);
-
-err:
- return (KERN_INVALID_ARGUMENT);
-}
-
-static kern_return_t
-set_debug_state64(thread_t thread, x86_debug_state64_t *ds)
-{
- x86_debug_state64_t *ids;
- pcb_t pcb;
-
- pcb = thread->machine.pcb;
- ids = pcb->ids;
-
- if (ids == NULL) {
- ids = zalloc(ids_zone64);
- bzero(ids, sizeof *ids);
-
- simple_lock(&pcb->lock);
- /* make sure it wasn't already alloc()'d elsewhere */
- if (pcb->ids == NULL) {
- pcb->ids = ids;
- simple_unlock(&pcb->lock);
- } else {
- simple_unlock(&pcb->lock);
- zfree(ids_zone64, ids);
- }
- }
-
- if (!dr7_is_valid((uint32_t *)&ds->dr7))
- goto err;
-
- /*
- * Don't allow the user to set debug addresses above their max
- * value
- */
- if (ds->dr7 & 0x1)
- if (ds->dr0 >= VM_MAX_PAGE_ADDRESS)
- goto err;
-
- if (ds->dr7 & (0x1<<2))
- if (ds->dr1 >= VM_MAX_PAGE_ADDRESS)
- goto err;
-
- if (ds->dr7 & (0x1<<4))
- if (ds->dr2 >= VM_MAX_PAGE_ADDRESS)
- goto err;
-
- if (ds->dr7 & (0x1<<6))
- if (ds->dr3 >= VM_MAX_PAGE_ADDRESS)
- goto err;
-
- ids->dr0 = ds->dr0;
- ids->dr1 = ds->dr1;
- ids->dr2 = ds->dr2;
- ids->dr3 = ds->dr3;
- ids->dr6 = ds->dr6;
- ids->dr7 = ds->dr7;
-
- return (KERN_SUCCESS);
-
-err:
- return (KERN_INVALID_ARGUMENT);
-}
-
-static void
-get_debug_state32(thread_t thread, x86_debug_state32_t *ds)
-{
- x86_debug_state32_t *saved_state;
-
- saved_state = thread->machine.pcb->ids;
-
- if (saved_state) {
- ds->dr0 = saved_state->dr0;
- ds->dr1 = saved_state->dr1;
- ds->dr2 = saved_state->dr2;
- ds->dr3 = saved_state->dr3;
- ds->dr4 = saved_state->dr4;
- ds->dr5 = saved_state->dr5;
- ds->dr6 = saved_state->dr6;
- ds->dr7 = saved_state->dr7;
- } else
- bzero(ds, sizeof *ds);
-}
-
-static void
-get_debug_state64(thread_t thread, x86_debug_state64_t *ds)
-{
- x86_debug_state64_t *saved_state;
-
- saved_state = (x86_debug_state64_t *)thread->machine.pcb->ids;
-
- if (saved_state) {
- ds->dr0 = saved_state->dr0;
- ds->dr1 = saved_state->dr1;
- ds->dr2 = saved_state->dr2;
- ds->dr3 = saved_state->dr3;
- ds->dr4 = saved_state->dr4;
- ds->dr5 = saved_state->dr5;
- ds->dr6 = saved_state->dr6;
- ds->dr7 = saved_state->dr7;
- } else
- bzero(ds, sizeof *ds);
-}
-
/*
* consider_machine_collect:
*
}
+// DEBUG
+int DEBUG_kldt = 0;
+int DEBUG_uldt = 0;
static void
act_machine_switch_pcb( thread_t new )
{
- pcb_t pcb = new->machine.pcb;
- struct real_descriptor *ldtp;
+ pcb_t pcb = new->machine.pcb;
+ int mycpu;
+ register iopb_tss_t tss = pcb->ims.io_tss;
vm_offset_t pcb_stack_top;
- vm_offset_t hi_pcb_stack_top;
- vm_offset_t hi_iss;
- cpu_data_t *cdp = current_cpu_datap();
-
- assert(new->kernel_stack != 0);
- STACK_IEL(new->kernel_stack)->saved_state = pcb->iss;
-
- if (!cpu_mode_is64bit()) {
- x86_saved_state32_tagged_t *hi_iss32;
-
- /*
- * Save a pointer to the top of the "kernel" stack -
- * actually the place in the PCB where a trap into
- * kernel mode will push the registers.
- */
- hi_iss = (vm_offset_t)((unsigned long)
- pmap_cpu_high_map_vaddr(cpu_number(), HIGH_CPU_ISS0) |
- ((unsigned long)pcb->iss & PAGE_MASK));
-
- cdp->cpu_hi_iss = (void *)hi_iss;
+ register user_ldt_t uldt = pcb->ims.ldt;
- pmap_high_map(pcb->iss_pte0, HIGH_CPU_ISS0);
- pmap_high_map(pcb->iss_pte1, HIGH_CPU_ISS1);
+ assert(new->kernel_stack != 0);
+ STACK_IEL(new->kernel_stack)->saved_state =
+ &new->machine.pcb->iss;
- hi_iss32 = (x86_saved_state32_tagged_t *) hi_iss;
- assert(hi_iss32->tag == x86_SAVED_STATE32);
-
- hi_pcb_stack_top = (int) (hi_iss32 + 1);
-
- /*
- * For fast syscall, top of interrupt stack points to pcb stack
- */
- *(vm_offset_t *) current_sstk() = hi_pcb_stack_top;
-
- current_ktss()->esp0 = hi_pcb_stack_top;
-/* XXX: This check is performed against the thread save state flavor rather than the
- * task's 64-bit feature flag because of the thread/task 64-bit state divergence
- * that can arise in task_set_64bit() on x86. When that is addressed, we can
- * revert to checking the task 64 bit feature flag. The assert below is retained
- * for that reason.
- */
- } else if (is_saved_state64(pcb->iss)) {
- x86_saved_state64_tagged_t *iss64;
- vm_offset_t isf;
-
- assert(is_saved_state64(pcb->iss));
-
- iss64 = (x86_saved_state64_tagged_t *) pcb->iss;
-
- /*
- * Set pointer to PCB's interrupt stack frame in cpu data.
- * Used by syscall and double-fault trap handlers.
- */
- isf = (vm_offset_t) &iss64->state.isf;
- cdp->cpu_uber.cu_isf = UBER64(isf);
- pcb_stack_top = (vm_offset_t) (iss64 + 1);
- /* require 16-byte alignment */
- assert((pcb_stack_top & 0xF) == 0);
- /* Interrupt stack is pcb */
- current_ktss64()->rsp0 = UBER64(pcb_stack_top);
-
- /*
- * Top of temporary sysenter stack points to pcb stack.
- * Although this is not normally used by 64-bit users,
- * it needs to be set in case a sysenter is attempted.
- */
- *current_sstk64() = UBER64(pcb_stack_top);
-
- cdp->cpu_task_map = new->map->pmap->pm_kernel_cr3 ?
- TASK_MAP_64BIT_SHARED : TASK_MAP_64BIT;
-
- /*
- * Enable the 64-bit user code segment, USER64_CS.
- */
- ldt_desc_p(USER64_CS)->access |= ACC_PL_U;
-
- } else {
- x86_saved_state_compat32_t *iss32compat;
- vm_offset_t isf;
-
- assert(is_saved_state32(pcb->iss));
- iss32compat = (x86_saved_state_compat32_t *) pcb->iss;
-
- pcb_stack_top = (int) (iss32compat + 1);
- /* require 16-byte alignment */
- assert((pcb_stack_top & 0xF) == 0);
-
- /*
- * Set pointer to PCB's interrupt stack frame in cpu data.
- * Used by debug trap handler.
- */
- isf = (vm_offset_t) &iss32compat->isf64;
- cdp->cpu_uber.cu_isf = UBER64(isf);
-
- /* Top of temporary sysenter stack points to pcb stack */
- *current_sstk64() = UBER64(pcb_stack_top);
-
- /* Interrupt stack is pcb */
- current_ktss64()->rsp0 = UBER64(pcb_stack_top);
-
- cdp->cpu_task_map = TASK_MAP_32BIT;
+ /*
+ * Save a pointer to the top of the "kernel" stack -
+ * actually the place in the PCB where a trap into
+ * kernel mode will push the registers.
+ * The location depends on V8086 mode. If we are
+ * not in V8086 mode, then a trap into the kernel
+ * won`t save the v86 segments, so we leave room.
+ */
- /*
- * Disable USER64_CS
- */
- ldt_desc_p(USER64_CS)->access &= ~ACC_PL_U;
+ pcb_stack_top = (pcb->iss.efl & EFL_VM)
+ ? (int) (&pcb->iss + 1)
+ : (int) (&pcb->iss.v86_segs);
+
+ mp_disable_preemption();
+ mycpu = cpu_number();
+
+ if (tss == 0) {
+ /*
+ * No per-thread IO permissions.
+ * Use standard kernel TSS.
+ */
+ if (!(gdt_desc_p(KERNEL_TSS)->access & ACC_TSS_BUSY))
+ set_tr(KERNEL_TSS);
+ current_ktss()->esp0 = pcb_stack_top;
+ }
+ else {
+ /*
+ * Set the IO permissions. Use this thread`s TSS.
+ */
+ *gdt_desc_p(USER_TSS)
+ = *(struct real_descriptor *)tss->iopb_desc;
+ tss->tss.esp0 = pcb_stack_top;
+ set_tr(USER_TSS);
+ gdt_desc_p(KERNEL_TSS)->access &= ~ ACC_TSS_BUSY;
}
/*
- * Set the thread`s cthread (a.k.a pthread)
- * For 32-bit user this involves setting the USER_CTHREAD
- * descriptor in the LDT to point to the cthread data.
- * The involves copying in the pre-initialized descriptor.
- */
- ldtp = (struct real_descriptor *)current_ldt();
- ldtp[sel_idx(USER_CTHREAD)] = pcb->cthread_desc;
- if (pcb->uldt_selector != 0)
- ldtp[sel_idx(pcb->uldt_selector)] = pcb->uldt_desc;
- /*
- * For 64-bit, we additionally set the 64-bit User GS base
- * address. On return to 64-bit user, the GS.Base MSR will be written.
+ * Set the thread`s LDT or LDT entry.
*/
- cdp->cpu_uber.cu_user_gs_base = pcb->cthread_self;
+ if (uldt == 0) {
+ struct real_descriptor *ldtp;
+ /*
+ * Use system LDT.
+ */
+ // Set up the tasks specific ldt entries if extant
+ ldtp = (struct real_descriptor *)current_ldt();
+ ldtp[sel_idx(USER_CTHREAD)] = pcb->cthread_desc;
+ if (pcb->uldt_selector != 0)
+ ldtp[sel_idx(pcb->uldt_selector)] = pcb->uldt_desc;
+ set_ldt(KERNEL_LDT);
+ }
+ else {
+ /*
+ * Thread has its own LDT. // THIS SHOULD BE REMOVED!!!!
+ */
+ *gdt_desc_p(USER_LDT) = uldt->desc;
+ set_ldt(USER_LDT);
+ /*debug*/
+ if ((DEBUG_uldt++ % 0x7fff) == 0)
+ printf("KERNEL----> setting user ldt");
+
+ }
+ mp_enable_preemption();
/*
- * Set the thread`s LDT or LDT entry.
+ * Load the floating-point context, if necessary.
*/
- if (new->task == TASK_NULL || new->task->i386_ldt == 0) {
- /*
- * Use system LDT.
- */
- ml_cpu_set_ldt(KERNEL_LDT);
- } else {
- /*
- * Task has its own LDT.
- */
- user_ldt_set(new);
- }
+ fpu_load_context(pcb);
+
}
/*
machine_load_context(
thread_t new)
{
- new->machine.specFlags |= OnProc;
act_machine_switch_pcb(new);
Load_context(new);
}
*/
fpu_save_context(old);
- old->machine.specFlags &= ~OnProc;
- new->machine.specFlags |= OnProc;
-
/*
* Switch address maps if need be, even if not switching tasks.
* (A server activation may be "borrowing" a client map.)
*/
- PMAP_SWITCH_CONTEXT(old, new, cpu_number())
+ {
+ int mycpu = cpu_number();
+
+ PMAP_SWITCH_CONTEXT(old, new, mycpu)
+ }
/*
* Load the rest of the user state for the new thread
*/
act_machine_switch_pcb(new);
- KERNEL_DEBUG_CONSTANT(
- MACHDBG_CODE(DBG_MACH_SCHED,MACH_SCHED) | DBG_FUNC_NONE,
- (int)old, (int)new, old->sched_pri, new->sched_pri, 0);
+ KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_SCHED) | DBG_FUNC_NONE,
+ (int)old, (int)new, old->sched_pri, new->sched_pri, 0);
+ old->continuation = NULL;
return(Switch_context(old, continuation, new));
}
machine_thread_state_initialize(
thread_t thread)
{
- /*
- * If there's an fpu save area, free it.
- * The initialized state will then be lazily faulted-in, if required.
- * And if we're target, re-arm the no-fpu trap.
- */
- if (thread->machine.pcb->ifps) {
- (void) fpu_set_fxstate(thread, NULL);
-
- if (thread == current_thread())
- clear_fpu();
- }
- return KERN_SUCCESS;
-}
+#pragma unused (thread)
-uint32_t
-get_eflags_exportmask(void)
-{
- return EFL_USER_SET;
+ return KERN_SUCCESS;
}
-
-/*
- * x86_SAVED_STATE32 - internal save/restore general register state on 32/64 bit processors
- * for 32bit tasks only
- * x86_SAVED_STATE64 - internal save/restore general register state on 64 bit processors
- * for 64bit tasks only
- * x86_THREAD_STATE32 - external set/get general register state on 32/64 bit processors
- * for 32bit tasks only
- * x86_THREAD_STATE64 - external set/get general register state on 64 bit processors
- * for 64bit tasks only
- * x86_SAVED_STATE - external set/get general register state on 32/64 bit processors
- * for either 32bit or 64bit tasks
- * x86_FLOAT_STATE32 - internal/external save/restore float and xmm state on 32/64 bit processors
- * for 32bit tasks only
- * x86_FLOAT_STATE64 - internal/external save/restore float and xmm state on 64 bit processors
- * for 64bit tasks only
- * x86_FLOAT_STATE - external save/restore float and xmm state on 32/64 bit processors
- * for either 32bit or 64bit tasks
- * x86_EXCEPTION_STATE32 - external get exception state on 32/64 bit processors
- * for 32bit tasks only
- * x86_EXCEPTION_STATE64 - external get exception state on 64 bit processors
- * for 64bit tasks only
- * x86_EXCEPTION_STATE - external get exception state on 323/64 bit processors
- * for either 32bit or 64bit tasks
- */
-
-
-static void
-get_exception_state64(thread_t thread, x86_exception_state64_t *es)
-{
- x86_saved_state64_t *saved_state;
-
- saved_state = USER_REGS64(thread);
-
- es->trapno = saved_state->isf.trapno;
- es->err = saved_state->isf.err;
- es->faultvaddr = saved_state->cr2;
-}
-
-static void
-get_exception_state32(thread_t thread, x86_exception_state32_t *es)
-{
- x86_saved_state32_t *saved_state;
-
- saved_state = USER_REGS32(thread);
-
- es->trapno = saved_state->trapno;
- es->err = saved_state->err;
- es->faultvaddr = saved_state->cr2;
-}
-
-
-static int
-set_thread_state32(thread_t thread, x86_thread_state32_t *ts)
-{
- x86_saved_state32_t *saved_state;
-
- saved_state = USER_REGS32(thread);
-
- /*
- * Scrub segment selector values:
- */
- if (ts->cs != USER_CS) ts->cs = USER_CS;
- if (ts->ss == 0) ts->ss = USER_DS;
- if (ts->ds == 0) ts->ds = USER_DS;
- if (ts->es == 0) ts->es = USER_DS;
-
- /* Check segment selectors are safe */
- if (!valid_user_segment_selectors(ts->cs,
- ts->ss,
- ts->ds,
- ts->es,
- ts->fs,
- ts->gs))
- return(KERN_INVALID_ARGUMENT);
-
- saved_state->eax = ts->eax;
- saved_state->ebx = ts->ebx;
- saved_state->ecx = ts->ecx;
- saved_state->edx = ts->edx;
- saved_state->edi = ts->edi;
- saved_state->esi = ts->esi;
- saved_state->ebp = ts->ebp;
- saved_state->uesp = ts->esp;
- saved_state->efl = (ts->eflags & ~EFL_USER_CLEAR) | EFL_USER_SET;
- saved_state->eip = ts->eip;
- saved_state->cs = ts->cs;
- saved_state->ss = ts->ss;
- saved_state->ds = ts->ds;
- saved_state->es = ts->es;
- saved_state->fs = ts->fs;
- saved_state->gs = ts->gs;
-
- /*
- * If the trace trap bit is being set,
- * ensure that the user returns via iret
- * - which is signaled thusly:
- */
- if ((saved_state->efl & EFL_TF) && saved_state->cs == SYSENTER_CS)
- saved_state->cs = SYSENTER_TF_CS;
-
- return(KERN_SUCCESS);
-}
-
-static int
-set_thread_state64(thread_t thread, x86_thread_state64_t *ts)
-{
- x86_saved_state64_t *saved_state;
-
- saved_state = USER_REGS64(thread);
-
- if (!IS_USERADDR64_CANONICAL(ts->rsp) ||
- !IS_USERADDR64_CANONICAL(ts->rip))
- return(KERN_INVALID_ARGUMENT);
-
- saved_state->r8 = ts->r8;
- saved_state->r9 = ts->r9;
- saved_state->r10 = ts->r10;
- saved_state->r11 = ts->r11;
- saved_state->r12 = ts->r12;
- saved_state->r13 = ts->r13;
- saved_state->r14 = ts->r14;
- saved_state->r15 = ts->r15;
- saved_state->rax = ts->rax;
- saved_state->rax = ts->rax;
- saved_state->rbx = ts->rbx;
- saved_state->rcx = ts->rcx;
- saved_state->rdx = ts->rdx;
- saved_state->rdi = ts->rdi;
- saved_state->rsi = ts->rsi;
- saved_state->rbp = ts->rbp;
- saved_state->isf.rsp = ts->rsp;
- saved_state->isf.rflags = (ts->rflags & ~EFL_USER_CLEAR) | EFL_USER_SET;
- saved_state->isf.rip = ts->rip;
- saved_state->isf.cs = USER64_CS;
- saved_state->fs = ts->fs;
- saved_state->gs = ts->gs;
-
- return(KERN_SUCCESS);
-}
-
-
-
-static void
-get_thread_state32(thread_t thread, x86_thread_state32_t *ts)
-{
- x86_saved_state32_t *saved_state;
-
- saved_state = USER_REGS32(thread);
-
- ts->eax = saved_state->eax;
- ts->ebx = saved_state->ebx;
- ts->ecx = saved_state->ecx;
- ts->edx = saved_state->edx;
- ts->edi = saved_state->edi;
- ts->esi = saved_state->esi;
- ts->ebp = saved_state->ebp;
- ts->esp = saved_state->uesp;
- ts->eflags = saved_state->efl;
- ts->eip = saved_state->eip;
- ts->cs = saved_state->cs;
- ts->ss = saved_state->ss;
- ts->ds = saved_state->ds;
- ts->es = saved_state->es;
- ts->fs = saved_state->fs;
- ts->gs = saved_state->gs;
-}
-
-
-static void
-get_thread_state64(thread_t thread, x86_thread_state64_t *ts)
-{
- x86_saved_state64_t *saved_state;
-
- saved_state = USER_REGS64(thread);
-
- ts->r8 = saved_state->r8;
- ts->r9 = saved_state->r9;
- ts->r10 = saved_state->r10;
- ts->r11 = saved_state->r11;
- ts->r12 = saved_state->r12;
- ts->r13 = saved_state->r13;
- ts->r14 = saved_state->r14;
- ts->r15 = saved_state->r15;
- ts->rax = saved_state->rax;
- ts->rbx = saved_state->rbx;
- ts->rcx = saved_state->rcx;
- ts->rdx = saved_state->rdx;
- ts->rdi = saved_state->rdi;
- ts->rsi = saved_state->rsi;
- ts->rbp = saved_state->rbp;
- ts->rsp = saved_state->isf.rsp;
- ts->rflags = saved_state->isf.rflags;
- ts->rip = saved_state->isf.rip;
- ts->cs = saved_state->isf.cs;
- ts->fs = saved_state->fs;
- ts->gs = saved_state->gs;
-}
-
-
-
+
+
/*
* act_machine_set_state:
*
thread_state_t tstate,
mach_msg_type_number_t count)
{
+ int kernel_act = 0;
- switch (flavor)
- {
- case x86_SAVED_STATE32:
+ switch (flavor) {
+ case THREAD_SYSCALL_STATE:
+ {
+ register struct thread_syscall_state *state;
+ register struct i386_saved_state *saved_state = USER_REGS(thr_act);
+
+ state = (struct thread_syscall_state *) tstate;
+ saved_state->eax = state->eax;
+ saved_state->edx = state->edx;
+ if (kernel_act)
+ saved_state->efl = state->efl;
+ else
+ saved_state->efl = (state->efl & ~EFL_USER_CLEAR) | EFL_USER_SET;
+ saved_state->eip = state->eip;
+ saved_state->uesp = state->esp;
+ break;
+ }
+
+ case i386_SAVED_STATE:
{
- x86_saved_state32_t *state;
- x86_saved_state32_t *saved_state;
+ register struct i386_saved_state *state;
+ register struct i386_saved_state *saved_state;
- if (count < x86_SAVED_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (count < i386_SAVED_STATE_COUNT) {
+ return(KERN_INVALID_ARGUMENT);
+ }
- state = (x86_saved_state32_t *) tstate;
+ state = (struct i386_saved_state *) tstate;
/* Check segment selectors are safe */
- if (!valid_user_segment_selectors(state->cs,
+ if (!kernel_act &&
+ !valid_user_segment_selectors(state->cs,
state->ss,
state->ds,
state->es,
state->fs,
state->gs))
- return KERN_INVALID_ARGUMENT;
+ return KERN_INVALID_ARGUMENT;
- saved_state = USER_REGS32(thr_act);
+ saved_state = USER_REGS(thr_act);
/*
* General registers
saved_state->ecx = state->ecx;
saved_state->eax = state->eax;
saved_state->eip = state->eip;
-
- saved_state->efl = (state->efl & ~EFL_USER_CLEAR) | EFL_USER_SET;
-
- /*
- * If the trace trap bit is being set,
- * ensure that the user returns via iret
- * - which is signaled thusly:
- */
- if ((saved_state->efl & EFL_TF) && state->cs == SYSENTER_CS)
- state->cs = SYSENTER_TF_CS;
-
- /*
- * User setting segment registers.
- * Code and stack selectors have already been
- * checked. Others will be reset by 'iret'
- * if they are not valid.
- */
- saved_state->cs = state->cs;
- saved_state->ss = state->ss;
- saved_state->ds = state->ds;
- saved_state->es = state->es;
- saved_state->fs = state->fs;
- saved_state->gs = state->gs;
- break;
- }
-
- case x86_SAVED_STATE64:
- {
- x86_saved_state64_t *state;
- x86_saved_state64_t *saved_state;
-
- if (count < x86_SAVED_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_saved_state64_t *) tstate;
-
- /* Verify that the supplied code segment selector is
- * valid. In 64-bit mode, the FS and GS segment overrides
- * use the FS.base and GS.base MSRs to calculate
- * base addresses, and the trampolines don't directly
- * restore the segment registers--hence they are no
- * longer relevant for validation.
- */
- if (!valid_user_code_selector(state->isf.cs))
- return KERN_INVALID_ARGUMENT;
-
- /* Check pc and stack are canonical addresses */
- if (!IS_USERADDR64_CANONICAL(state->isf.rsp) ||
- !IS_USERADDR64_CANONICAL(state->isf.rip))
- return KERN_INVALID_ARGUMENT;
-
- saved_state = USER_REGS64(thr_act);
+ if (kernel_act)
+ saved_state->efl = state->efl;
+ else
+ saved_state->efl = (state->efl & ~EFL_USER_CLEAR)
+ | EFL_USER_SET;
/*
- * General registers
- */
- saved_state->r8 = state->r8;
- saved_state->r9 = state->r9;
- saved_state->r10 = state->r10;
- saved_state->r11 = state->r11;
- saved_state->r12 = state->r12;
- saved_state->r13 = state->r13;
- saved_state->r14 = state->r14;
- saved_state->r15 = state->r15;
- saved_state->rdi = state->rdi;
- saved_state->rsi = state->rsi;
- saved_state->rbp = state->rbp;
- saved_state->rbx = state->rbx;
- saved_state->rdx = state->rdx;
- saved_state->rcx = state->rcx;
- saved_state->rax = state->rax;
- saved_state->isf.rsp = state->isf.rsp;
- saved_state->isf.rip = state->isf.rip;
-
- saved_state->isf.rflags = (state->isf.rflags & ~EFL_USER_CLEAR) | EFL_USER_SET;
-
- /*
- * User setting segment registers.
- * Code and stack selectors have already been
- * checked. Others will be reset by 'sys'
- * if they are not valid.
+ * Segment registers. Set differently in V8086 mode.
*/
- saved_state->isf.cs = state->isf.cs;
- saved_state->isf.ss = state->isf.ss;
- saved_state->fs = state->fs;
- saved_state->gs = state->gs;
-
- break;
- }
-
- case x86_FLOAT_STATE32:
- {
- if (count != x86_FLOAT_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- return fpu_set_fxstate(thr_act, tstate);
- }
-
- case x86_FLOAT_STATE64:
- {
- if (count != x86_FLOAT_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if ( !thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- return fpu_set_fxstate(thr_act, tstate);
- }
-
- case x86_FLOAT_STATE:
- {
- x86_float_state_t *state;
-
- if (count != x86_FLOAT_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_float_state_t *)tstate;
-
- if (state->fsh.flavor == x86_FLOAT_STATE64 && state->fsh.count == x86_FLOAT_STATE64_COUNT &&
- thread_is_64bit(thr_act)) {
- return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs64);
+ if (state->efl & EFL_VM) {
+ /*
+ * Set V8086 mode segment registers.
+ */
+ saved_state->cs = state->cs & 0xffff;
+ saved_state->ss = state->ss & 0xffff;
+ saved_state->v86_segs.v86_ds = state->ds & 0xffff;
+ saved_state->v86_segs.v86_es = state->es & 0xffff;
+ saved_state->v86_segs.v86_fs = state->fs & 0xffff;
+ saved_state->v86_segs.v86_gs = state->gs & 0xffff;
+
+ /*
+ * Zero protected mode segment registers.
+ */
+ saved_state->ds = 0;
+ saved_state->es = 0;
+ saved_state->fs = 0;
+ saved_state->gs = 0;
+
+ if (thr_act->machine.pcb->ims.v86s.int_table) {
+ /*
+ * Hardware assist on.
+ */
+ thr_act->machine.pcb->ims.v86s.flags =
+ state->efl & (EFL_TF | EFL_IF);
+ }
}
- if (state->fsh.flavor == x86_FLOAT_STATE32 && state->fsh.count == x86_FLOAT_STATE32_COUNT &&
- !thread_is_64bit(thr_act)) {
- return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs32);
+ else if (kernel_act) {
+ /*
+ * 386 mode. Set segment registers for flat
+ * 32-bit address space.
+ */
+ saved_state->cs = KERNEL_CS;
+ saved_state->ss = KERNEL_DS;
+ saved_state->ds = KERNEL_DS;
+ saved_state->es = KERNEL_DS;
+ saved_state->fs = KERNEL_DS;
+ saved_state->gs = CPU_DATA_GS;
}
- return(KERN_INVALID_ARGUMENT);
- }
-
-
-
- case OLD_i386_THREAD_STATE:
- case x86_THREAD_STATE32:
- {
- if (count != x86_THREAD_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- return set_thread_state32(thr_act, (x86_thread_state32_t *)tstate);
- }
-
- case x86_THREAD_STATE64:
- {
- if (count != x86_THREAD_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if ( !thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- return set_thread_state64(thr_act, (x86_thread_state64_t *)tstate);
- }
-
- case x86_THREAD_STATE:
- {
- x86_thread_state_t *state;
-
- if (count != x86_THREAD_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_thread_state_t *)tstate;
-
- if (state->tsh.flavor == x86_THREAD_STATE64 && state->tsh.count == x86_THREAD_STATE64_COUNT &&
- thread_is_64bit(thr_act)) {
- return set_thread_state64(thr_act, &state->uts.ts64);
- } else if (state->tsh.flavor == x86_THREAD_STATE32 && state->tsh.count == x86_THREAD_STATE32_COUNT &&
- !thread_is_64bit(thr_act)) {
- return set_thread_state32(thr_act, &state->uts.ts32);
- } else
- return(KERN_INVALID_ARGUMENT);
-
- break;
- }
- case x86_DEBUG_STATE32:
- {
- x86_debug_state32_t *state;
- kern_return_t ret;
-
- if (thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_debug_state32_t *)tstate;
-
- ret = set_debug_state32(thr_act, state);
-
- return ret;
- }
- case x86_DEBUG_STATE64:
- {
- x86_debug_state64_t *state;
- kern_return_t ret;
-
- if (!thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_debug_state64_t *)tstate;
-
- ret = set_debug_state64(thr_act, state);
-
- return ret;
- }
- case x86_DEBUG_STATE:
- {
- x86_debug_state_t *state;
- kern_return_t ret = KERN_INVALID_ARGUMENT;
-
- if (count != x86_DEBUG_STATE_COUNT)
- return (KERN_INVALID_ARGUMENT);
-
- state = (x86_debug_state_t *)tstate;
- if (state->dsh.flavor == x86_DEBUG_STATE64 &&
- state->dsh.count == x86_DEBUG_STATE64_COUNT &&
- thread_is_64bit(thr_act)) {
- ret = set_debug_state64(thr_act, &state->uds.ds64);
+ else {
+ /*
+ * User setting segment registers.
+ * Code and stack selectors have already been
+ * checked. Others will be reset by 'iret'
+ * if they are not valid.
+ */
+ saved_state->cs = state->cs;
+ saved_state->ss = state->ss;
+ saved_state->ds = state->ds;
+ saved_state->es = state->es;
+ saved_state->fs = state->fs;
+ saved_state->gs = state->gs;
}
- else
- if (state->dsh.flavor == x86_DEBUG_STATE32 &&
- state->dsh.count == x86_DEBUG_STATE32_COUNT &&
- !thread_is_64bit(thr_act)) {
- ret = set_debug_state32(thr_act, &state->uds.ds32);
- }
- return ret;
- }
- default:
- return(KERN_INVALID_ARGUMENT);
- }
-
- return(KERN_SUCCESS);
-}
-
-
-
-/*
- * thread_getstatus:
- *
- * Get the status of the specified thread.
- */
-
-kern_return_t
-machine_thread_get_state(
- thread_t thr_act,
- thread_flavor_t flavor,
- thread_state_t tstate,
- mach_msg_type_number_t *count)
-{
- switch (flavor) {
-
- case THREAD_STATE_FLAVOR_LIST:
- {
- if (*count < 3)
- return (KERN_INVALID_ARGUMENT);
-
- tstate[0] = i386_THREAD_STATE;
- tstate[1] = i386_FLOAT_STATE;
- tstate[2] = i386_EXCEPTION_STATE;
-
- *count = 3;
break;
}
- case THREAD_STATE_FLAVOR_LIST_NEW:
+ case i386_NEW_THREAD_STATE:
+ case i386_REGS_SEGS_STATE:
{
- if (*count < 4)
- return (KERN_INVALID_ARGUMENT);
-
- tstate[0] = x86_THREAD_STATE;
- tstate[1] = x86_FLOAT_STATE;
- tstate[2] = x86_EXCEPTION_STATE;
- tstate[3] = x86_DEBUG_STATE;
-
- *count = 4;
- break;
- }
-
- case x86_SAVED_STATE32:
- {
- x86_saved_state32_t *state;
- x86_saved_state32_t *saved_state;
-
- if (*count < x86_SAVED_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ register struct i386_new_thread_state *state;
+ register struct i386_saved_state *saved_state;
- state = (x86_saved_state32_t *) tstate;
- saved_state = USER_REGS32(thr_act);
-
- /*
- * First, copy everything:
- */
- *state = *saved_state;
- state->ds = saved_state->ds & 0xffff;
- state->es = saved_state->es & 0xffff;
- state->fs = saved_state->fs & 0xffff;
- state->gs = saved_state->gs & 0xffff;
-
- *count = x86_SAVED_STATE32_COUNT;
- break;
- }
-
- case x86_SAVED_STATE64:
- {
- x86_saved_state64_t *state;
- x86_saved_state64_t *saved_state;
+ if (count < i386_NEW_THREAD_STATE_COUNT) {
+ return(KERN_INVALID_ARGUMENT);
+ }
- if (*count < x86_SAVED_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ state = (struct i386_new_thread_state *) tstate;
+
+ if (flavor == i386_REGS_SEGS_STATE) {
+ /*
+ * Code and stack selectors must not be null,
+ * and must have user protection levels.
+ * Only the low 16 bits are valid.
+ */
+ state->cs &= 0xffff;
+ state->ss &= 0xffff;
+ state->ds &= 0xffff;
+ state->es &= 0xffff;
+ state->fs &= 0xffff;
+ state->gs &= 0xffff;
+
+ if (!kernel_act &&
+ !valid_user_segment_selectors(state->cs,
+ state->ss,
+ state->ds,
+ state->es,
+ state->fs,
+ state->gs))
+ return KERN_INVALID_ARGUMENT;
+ }
- state = (x86_saved_state64_t *)tstate;
- saved_state = USER_REGS64(thr_act);
+ saved_state = USER_REGS(thr_act);
/*
- * First, copy everything:
+ * General registers
*/
- *state = *saved_state;
- state->fs = saved_state->fs & 0xffff;
- state->gs = saved_state->gs & 0xffff;
+ saved_state->edi = state->edi;
+ saved_state->esi = state->esi;
+ saved_state->ebp = state->ebp;
+ saved_state->uesp = state->uesp;
+ saved_state->ebx = state->ebx;
+ saved_state->edx = state->edx;
+ saved_state->ecx = state->ecx;
+ saved_state->eax = state->eax;
+ saved_state->eip = state->eip;
+ if (kernel_act)
+ saved_state->efl = state->efl;
+ else
+ saved_state->efl = (state->efl & ~EFL_USER_CLEAR)
+ | EFL_USER_SET;
- *count = x86_SAVED_STATE64_COUNT;
+ /*
+ * Segment registers. Set differently in V8086 mode.
+ */
+ if (state->efl & EFL_VM) {
+ /*
+ * Set V8086 mode segment registers.
+ */
+ saved_state->cs = state->cs & 0xffff;
+ saved_state->ss = state->ss & 0xffff;
+ saved_state->v86_segs.v86_ds = state->ds & 0xffff;
+ saved_state->v86_segs.v86_es = state->es & 0xffff;
+ saved_state->v86_segs.v86_fs = state->fs & 0xffff;
+ saved_state->v86_segs.v86_gs = state->gs & 0xffff;
+
+ /*
+ * Zero protected mode segment registers.
+ */
+ saved_state->ds = 0;
+ saved_state->es = 0;
+ saved_state->fs = 0;
+ saved_state->gs = 0;
+
+ if (thr_act->machine.pcb->ims.v86s.int_table) {
+ /*
+ * Hardware assist on.
+ */
+ thr_act->machine.pcb->ims.v86s.flags =
+ state->efl & (EFL_TF | EFL_IF);
+ }
+ }
+ else if (flavor == i386_NEW_THREAD_STATE && kernel_act) {
+ /*
+ * 386 mode. Set segment registers for flat
+ * 32-bit address space.
+ */
+ saved_state->cs = KERNEL_CS;
+ saved_state->ss = KERNEL_DS;
+ saved_state->ds = KERNEL_DS;
+ saved_state->es = KERNEL_DS;
+ saved_state->fs = KERNEL_DS;
+ saved_state->gs = CPU_DATA_GS;
+ }
+ else {
+ /*
+ * User setting segment registers.
+ * Code and stack selectors have already been
+ * checked. Others will be reset by 'iret'
+ * if they are not valid.
+ */
+ saved_state->cs = state->cs;
+ saved_state->ss = state->ss;
+ saved_state->ds = state->ds;
+ saved_state->es = state->es;
+ saved_state->fs = state->fs;
+ saved_state->gs = state->gs;
+ }
break;
}
- case x86_FLOAT_STATE32:
- {
- if (*count < x86_FLOAT_STATE32_COUNT)
+ case i386_FLOAT_STATE: {
+ if (count < i386_old_FLOAT_STATE_COUNT)
return(KERN_INVALID_ARGUMENT);
+ if (count < i386_FLOAT_STATE_COUNT)
+ return fpu_set_state(thr_act,(struct i386_float_state*)tstate);
+ else return fpu_set_fxstate(thr_act,(struct i386_float_state*)tstate);
+ }
- if (thread_is_64bit(thr_act))
+ /*
+ * Temporary - replace by i386_io_map
+ */
+ case i386_ISA_PORT_MAP_STATE: {
+ if (count < i386_ISA_PORT_MAP_STATE_COUNT)
return(KERN_INVALID_ARGUMENT);
- *count = x86_FLOAT_STATE32_COUNT;
-
- return fpu_get_fxstate(thr_act, tstate);
+ break;
}
- case x86_FLOAT_STATE64:
+ case i386_V86_ASSIST_STATE:
{
- if (*count < x86_FLOAT_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ register struct i386_v86_assist_state *state;
+ vm_offset_t int_table;
+ int int_count;
- if ( !thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (count < i386_V86_ASSIST_STATE_COUNT)
+ return KERN_INVALID_ARGUMENT;
- *count = x86_FLOAT_STATE64_COUNT;
+ state = (struct i386_v86_assist_state *) tstate;
+ int_table = state->int_table;
+ int_count = state->int_count;
- return fpu_get_fxstate(thr_act, tstate);
- }
+ if (int_table >= VM_MAX_ADDRESS ||
+ int_table +
+ int_count * sizeof(struct v86_interrupt_table)
+ > VM_MAX_ADDRESS)
+ return KERN_INVALID_ARGUMENT;
- case x86_FLOAT_STATE:
- {
- x86_float_state_t *state;
- kern_return_t kret;
+ thr_act->machine.pcb->ims.v86s.int_table = int_table;
+ thr_act->machine.pcb->ims.v86s.int_count = int_count;
- if (*count < x86_FLOAT_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ thr_act->machine.pcb->ims.v86s.flags =
+ USER_REGS(thr_act)->efl & (EFL_TF | EFL_IF);
+ break;
+ }
- state = (x86_float_state_t *)tstate;
+ case i386_THREAD_STATE: {
+ struct i386_saved_state *saved_state;
+ i386_thread_state_t *state25;
+
+ saved_state = USER_REGS(thr_act);
+ state25 = (i386_thread_state_t *)tstate;
+
+ saved_state->eax = state25->eax;
+ saved_state->ebx = state25->ebx;
+ saved_state->ecx = state25->ecx;
+ saved_state->edx = state25->edx;
+ saved_state->edi = state25->edi;
+ saved_state->esi = state25->esi;
+ saved_state->ebp = state25->ebp;
+ saved_state->uesp = state25->esp;
+ saved_state->efl = (state25->eflags & ~EFL_USER_CLEAR)
+ | EFL_USER_SET;
+ saved_state->eip = state25->eip;
+ saved_state->cs = USER_CS; /* FIXME? */
+ saved_state->ss = USER_DS;
+ saved_state->ds = USER_DS;
+ saved_state->es = USER_DS;
+ saved_state->fs = state25->fs;
+ saved_state->gs = state25->gs;
+ }
+ break;
- /*
- * no need to bzero... currently
- * x86_FLOAT_STATE64_COUNT == x86_FLOAT_STATE32_COUNT
- */
- if (thread_is_64bit(thr_act)) {
- state->fsh.flavor = x86_FLOAT_STATE64;
- state->fsh.count = x86_FLOAT_STATE64_COUNT;
+ default:
+ return(KERN_INVALID_ARGUMENT);
+ }
- kret = fpu_get_fxstate(thr_act, (thread_state_t)&state->ufs.fs64);
- } else {
- state->fsh.flavor = x86_FLOAT_STATE32;
- state->fsh.count = x86_FLOAT_STATE32_COUNT;
+ return(KERN_SUCCESS);
+}
- kret = fpu_get_fxstate(thr_act, (thread_state_t)&state->ufs.fs32);
- }
- *count = x86_FLOAT_STATE_COUNT;
+/*
+ * thread_getstatus:
+ *
+ * Get the status of the specified thread.
+ */
- return(kret);
- }
+kern_return_t
+machine_thread_get_state(
+ thread_t thr_act,
+ thread_flavor_t flavor,
+ thread_state_t tstate,
+ mach_msg_type_number_t *count)
+{
+ switch (flavor) {
- case OLD_i386_THREAD_STATE:
- case x86_THREAD_STATE32:
+ case i386_SAVED_STATE:
{
- if (*count < x86_THREAD_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ register struct i386_saved_state *state;
+ register struct i386_saved_state *saved_state;
- *count = x86_THREAD_STATE32_COUNT;
+ if (*count < i386_SAVED_STATE_COUNT)
+ return(KERN_INVALID_ARGUMENT);
- get_thread_state32(thr_act, (x86_thread_state32_t *)tstate);
- break;
- }
-
- case x86_THREAD_STATE64:
- {
- if (*count < x86_THREAD_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ state = (struct i386_saved_state *) tstate;
+ saved_state = USER_REGS(thr_act);
- if ( !thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ /*
+ * First, copy everything:
+ */
+ *state = *saved_state;
- *count = x86_THREAD_STATE64_COUNT;
+ if (saved_state->efl & EFL_VM) {
+ /*
+ * V8086 mode.
+ */
+ state->ds = saved_state->v86_segs.v86_ds & 0xffff;
+ state->es = saved_state->v86_segs.v86_es & 0xffff;
+ state->fs = saved_state->v86_segs.v86_fs & 0xffff;
+ state->gs = saved_state->v86_segs.v86_gs & 0xffff;
- get_thread_state64(thr_act, (x86_thread_state64_t *)tstate);
+ if (thr_act->machine.pcb->ims.v86s.int_table) {
+ /*
+ * Hardware assist on
+ */
+ if ((thr_act->machine.pcb->ims.v86s.flags &
+ (EFL_IF|V86_IF_PENDING)) == 0)
+ state->efl &= ~EFL_IF;
+ }
+ }
+ else {
+ /*
+ * 386 mode.
+ */
+ state->ds = saved_state->ds & 0xffff;
+ state->es = saved_state->es & 0xffff;
+ state->fs = saved_state->fs & 0xffff;
+ state->gs = saved_state->gs & 0xffff;
+ }
+ *count = i386_SAVED_STATE_COUNT;
break;
}
- case x86_THREAD_STATE:
+ case i386_NEW_THREAD_STATE:
+ case i386_REGS_SEGS_STATE:
{
- x86_thread_state_t *state;
-
- if (*count < x86_THREAD_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_thread_state_t *)tstate;
+ register struct i386_new_thread_state *state;
+ register struct i386_saved_state *saved_state;
- bzero((char *)state, sizeof(x86_thread_state_t));
+ if (*count < i386_NEW_THREAD_STATE_COUNT)
+ return(KERN_INVALID_ARGUMENT);
- if (thread_is_64bit(thr_act)) {
- state->tsh.flavor = x86_THREAD_STATE64;
- state->tsh.count = x86_THREAD_STATE64_COUNT;
+ state = (struct i386_new_thread_state *) tstate;
+ saved_state = USER_REGS(thr_act);
- get_thread_state64(thr_act, &state->uts.ts64);
- } else {
- state->tsh.flavor = x86_THREAD_STATE32;
- state->tsh.count = x86_THREAD_STATE32_COUNT;
-
- get_thread_state32(thr_act, &state->uts.ts32);
+ /*
+ * General registers.
+ */
+ state->edi = saved_state->edi;
+ state->esi = saved_state->esi;
+ state->ebp = saved_state->ebp;
+ state->ebx = saved_state->ebx;
+ state->edx = saved_state->edx;
+ state->ecx = saved_state->ecx;
+ state->eax = saved_state->eax;
+ state->eip = saved_state->eip;
+ state->efl = saved_state->efl;
+ state->uesp = saved_state->uesp;
+
+ state->cs = saved_state->cs;
+ state->ss = saved_state->ss;
+ if (saved_state->efl & EFL_VM) {
+ /*
+ * V8086 mode.
+ */
+ state->ds = saved_state->v86_segs.v86_ds & 0xffff;
+ state->es = saved_state->v86_segs.v86_es & 0xffff;
+ state->fs = saved_state->v86_segs.v86_fs & 0xffff;
+ state->gs = saved_state->v86_segs.v86_gs & 0xffff;
+
+ if (thr_act->machine.pcb->ims.v86s.int_table) {
+ /*
+ * Hardware assist on
+ */
+ if ((thr_act->machine.pcb->ims.v86s.flags &
+ (EFL_IF|V86_IF_PENDING)) == 0)
+ state->efl &= ~EFL_IF;
+ }
}
- *count = x86_THREAD_STATE_COUNT;
-
+ else {
+ /*
+ * 386 mode.
+ */
+ state->ds = saved_state->ds & 0xffff;
+ state->es = saved_state->es & 0xffff;
+ state->fs = saved_state->fs & 0xffff;
+ state->gs = saved_state->gs & 0xffff;
+ }
+ *count = i386_NEW_THREAD_STATE_COUNT;
break;
}
-
- case x86_EXCEPTION_STATE32:
+ case THREAD_SYSCALL_STATE:
{
- if (*count < x86_EXCEPTION_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- *count = x86_EXCEPTION_STATE32_COUNT;
-
- get_exception_state32(thr_act, (x86_exception_state32_t *)tstate);
+ register struct thread_syscall_state *state;
+ register struct i386_saved_state *saved_state = USER_REGS(thr_act);
+
+ state = (struct thread_syscall_state *) tstate;
+ state->eax = saved_state->eax;
+ state->edx = saved_state->edx;
+ state->efl = saved_state->efl;
+ state->eip = saved_state->eip;
+ state->esp = saved_state->uesp;
+ *count = i386_THREAD_SYSCALL_STATE_COUNT;
break;
}
- case x86_EXCEPTION_STATE64:
- {
- if (*count < x86_EXCEPTION_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ case THREAD_STATE_FLAVOR_LIST:
+ if (*count < 5)
+ return (KERN_INVALID_ARGUMENT);
+ tstate[0] = i386_NEW_THREAD_STATE;
+ tstate[1] = i386_FLOAT_STATE;
+ tstate[2] = i386_ISA_PORT_MAP_STATE;
+ tstate[3] = i386_V86_ASSIST_STATE;
+ tstate[4] = THREAD_SYSCALL_STATE;
+ *count = 5;
+ break;
- if ( !thread_is_64bit(thr_act))
+ case i386_FLOAT_STATE: {
+ if (*count < i386_old_FLOAT_STATE_COUNT)
return(KERN_INVALID_ARGUMENT);
-
- *count = x86_EXCEPTION_STATE64_COUNT;
-
- get_exception_state64(thr_act, (x86_exception_state64_t *)tstate);
- break;
+ if (*count< i386_FLOAT_STATE_COUNT) {
+ *count = i386_old_FLOAT_STATE_COUNT;
+ return fpu_get_state(thr_act,(struct i386_float_state *)tstate);
+ } else {
+ *count = i386_FLOAT_STATE_COUNT;
+ return fpu_get_fxstate(thr_act,(struct i386_float_state *)tstate);
+ }
}
- case x86_EXCEPTION_STATE:
- {
- x86_exception_state_t *state;
+ /*
+ * Temporary - replace by i386_io_map
+ */
+ case i386_ISA_PORT_MAP_STATE: {
+ register struct i386_isa_port_map_state *state;
+ register iopb_tss_t tss;
- if (*count < x86_EXCEPTION_STATE_COUNT)
+ if (*count < i386_ISA_PORT_MAP_STATE_COUNT)
return(KERN_INVALID_ARGUMENT);
- state = (x86_exception_state_t *)tstate;
+ state = (struct i386_isa_port_map_state *) tstate;
+ tss = thr_act->machine.pcb->ims.io_tss;
- bzero((char *)state, sizeof(x86_exception_state_t));
+ if (tss == 0) {
+ unsigned int i;
- if (thread_is_64bit(thr_act)) {
- state->esh.flavor = x86_EXCEPTION_STATE64;
- state->esh.count = x86_EXCEPTION_STATE64_COUNT;
+ /*
+ * The thread has no ktss, so no IO permissions.
+ */
- get_exception_state64(thr_act, &state->ues.es64);
+ for (i = 0; i < sizeof state->pm; i++)
+ state->pm[i] = 0xff;
} else {
- state->esh.flavor = x86_EXCEPTION_STATE32;
- state->esh.count = x86_EXCEPTION_STATE32_COUNT;
+ /*
+ * The thread has its own ktss.
+ */
- get_exception_state32(thr_act, &state->ues.es32);
+ bcopy((char *) tss->bitmap,
+ (char *) state->pm,
+ sizeof state->pm);
}
- *count = x86_EXCEPTION_STATE_COUNT;
+ *count = i386_ISA_PORT_MAP_STATE_COUNT;
break;
- }
- case x86_DEBUG_STATE32:
- {
- if (*count < x86_DEBUG_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ }
- if (thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ case i386_V86_ASSIST_STATE:
+ {
+ register struct i386_v86_assist_state *state;
- get_debug_state32(thr_act, (x86_debug_state32_t *)tstate);
+ if (*count < i386_V86_ASSIST_STATE_COUNT)
+ return KERN_INVALID_ARGUMENT;
- *count = x86_DEBUG_STATE32_COUNT;
+ state = (struct i386_v86_assist_state *) tstate;
+ state->int_table = thr_act->machine.pcb->ims.v86s.int_table;
+ state->int_count = thr_act->machine.pcb->ims.v86s.int_count;
+ *count = i386_V86_ASSIST_STATE_COUNT;
break;
- }
- case x86_DEBUG_STATE64:
- {
- if (*count < x86_DEBUG_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (!thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- get_debug_state64(thr_act, (x86_debug_state64_t *)tstate);
-
- *count = x86_DEBUG_STATE64_COUNT;
+ }
+ case i386_THREAD_STATE: {
+ struct i386_saved_state *saved_state;
+ i386_thread_state_t *state;
+
+ saved_state = USER_REGS(thr_act);
+ state = (i386_thread_state_t *)tstate;
+
+ state->eax = saved_state->eax;
+ state->ebx = saved_state->ebx;
+ state->ecx = saved_state->ecx;
+ state->edx = saved_state->edx;
+ state->edi = saved_state->edi;
+ state->esi = saved_state->esi;
+ state->ebp = saved_state->ebp;
+ state->esp = saved_state->uesp;
+ state->eflags = saved_state->efl;
+ state->eip = saved_state->eip;
+ state->cs = saved_state->cs;
+ state->ss = saved_state->ss;
+ state->ds = saved_state->ds;
+ state->es = saved_state->es;
+ state->fs = saved_state->fs;
+ state->gs = saved_state->gs;
break;
}
- case x86_DEBUG_STATE:
- {
- x86_debug_state_t *state;
-
- if (*count < x86_DEBUG_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_debug_state_t *)tstate;
-
- bzero(state, sizeof *state);
-
- if (thread_is_64bit(thr_act)) {
- state->dsh.flavor = x86_DEBUG_STATE64;
- state->dsh.count = x86_DEBUG_STATE64_COUNT;
-
- get_debug_state64(thr_act, &state->uds.ds64);
- } else {
- state->dsh.flavor = x86_DEBUG_STATE32;
- state->dsh.count = x86_DEBUG_STATE32_COUNT;
- get_debug_state32(thr_act, &state->uds.ds32);
- }
- *count = x86_DEBUG_STATE_COUNT;
- break;
- }
default:
return(KERN_INVALID_ARGUMENT);
}
return(KERN_SUCCESS);
}
-kern_return_t
-machine_thread_get_kern_state(
- thread_t thread,
- thread_flavor_t flavor,
- thread_state_t tstate,
- mach_msg_type_number_t *count)
-{
-
- /*
- * This works only for an interrupted kernel thread
- */
- if (thread != current_thread() || current_cpu_datap()->cpu_int_state == NULL)
- return KERN_FAILURE;
-
- switch(flavor) {
-
- case x86_THREAD_STATE32:
- {
-
- x86_thread_state32_t *state;
- x86_saved_state32_t *saved_state;
-
- if (*count < x86_THREAD_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_thread_state32_t *)tstate;
-
- assert(is_saved_state32(current_cpu_datap()->cpu_int_state));
- saved_state = saved_state32(current_cpu_datap()->cpu_int_state);
- /*
- * General registers.
- */
- state->eax = saved_state->eax;
- state->ebx = saved_state->ebx;
- state->ecx = saved_state->ecx;
- state->edx = saved_state->edx;
- state->edi = saved_state->edi;
- state->esi = saved_state->esi;
- state->ebp = saved_state->ebp;
- state->esp = saved_state->uesp;
- state->eflags = saved_state->efl;
- state->eip = saved_state->eip;
- state->cs = saved_state->cs;
- state->ss = saved_state->ss;
- state->ds = saved_state->ds & 0xffff;
- state->es = saved_state->es & 0xffff;
- state->fs = saved_state->fs & 0xffff;
- state->gs = saved_state->gs & 0xffff;
-
- *count = x86_THREAD_STATE32_COUNT;
-
- return KERN_SUCCESS;
- }
- break; // for completeness
-
- case x86_THREAD_STATE:
- {
- // wrap a 32 bit thread state into a 32/64bit clean thread state
- x86_thread_state_t *state;
- x86_saved_state32_t *saved_state;
-
- if(*count < x86_THREAD_STATE_COUNT)
- return (KERN_INVALID_ARGUMENT);
-
- state = (x86_thread_state_t *)tstate;
- assert(is_saved_state32(current_cpu_datap()->cpu_int_state));
- saved_state = saved_state32(current_cpu_datap()->cpu_int_state);
-
- state->tsh.flavor = x86_THREAD_STATE32;
- state->tsh.count = x86_THREAD_STATE32_COUNT;
-
- /*
- * General registers.
- */
-
- state->uts.ts32.eax = saved_state->eax;
- state->uts.ts32.ebx = saved_state->ebx;
- state->uts.ts32.ecx = saved_state->ecx;
- state->uts.ts32.edx = saved_state->edx;
- state->uts.ts32.edi = saved_state->edi;
- state->uts.ts32.esi = saved_state->esi;
- state->uts.ts32.ebp = saved_state->ebp;
- state->uts.ts32.esp = saved_state->uesp;
- state->uts.ts32.eflags = saved_state->efl;
- state->uts.ts32.eip = saved_state->eip;
- state->uts.ts32.cs = saved_state->cs;
- state->uts.ts32.ss = saved_state->ss;
- state->uts.ts32.ds = saved_state->ds & 0xffff;
- state->uts.ts32.es = saved_state->es & 0xffff;
- state->uts.ts32.fs = saved_state->fs & 0xffff;
- state->uts.ts32.gs = saved_state->gs & 0xffff;
-
- *count = x86_THREAD_STATE_COUNT;
- return KERN_SUCCESS;
- }
- break;
- }
- return KERN_FAILURE;
-}
-
-
/*
* Initialize the machine-dependent state for a new thread.
*/
kern_return_t
machine_thread_create(
thread_t thread,
- task_t task)
+ __unused task_t task)
{
- pcb_t pcb = &thread->machine.xxx_pcb;
- struct real_descriptor *ldtp;
- pmap_paddr_t paddr;
- x86_saved_state_t *iss;
-
- inval_copy_windows(thread);
-
- thread->machine.physwindow_pte = 0;
- thread->machine.physwindow_busy = 0;
-
- if (task_has_64BitAddr(task)) {
- x86_sframe64_t *sf64;
-
- sf64 = (x86_sframe64_t *)zalloc(iss_zone64);
-
- if (sf64 == NULL)
- panic("iss_zone64");
- pcb->sf = (void *)sf64;
-
- bzero((char *)sf64, sizeof(x86_sframe64_t));
-
- iss = (x86_saved_state_t *) &sf64->ssf;
- iss->flavor = x86_SAVED_STATE64;
- /*
- * Guarantee that the bootstrapped thread will be in user
- * mode.
- */
- iss->ss_64.isf.rflags = EFL_USER_SET;
- iss->ss_64.isf.cs = USER64_CS;
- iss->ss_64.isf.ss = USER_DS;
- iss->ss_64.fs = USER_DS;
- iss->ss_64.gs = USER_DS;
- } else {
- if (cpu_mode_is64bit()) {
- x86_sframe_compat32_t *sfc32;
-
- sfc32 = (x86_sframe_compat32_t *)zalloc(iss_zone32);
- if (sfc32 == NULL)
- panic("iss_zone32");
- pcb->sf = (void *)sfc32;
-
- bzero((char *)sfc32, sizeof(x86_sframe_compat32_t));
-
- iss = (x86_saved_state_t *) &sfc32->ssf.iss32;
- iss->flavor = x86_SAVED_STATE32;
-#if DEBUG
- {
- x86_saved_state_compat32_t *xssc;
-
- xssc = (x86_saved_state_compat32_t *) iss;
- xssc->pad_for_16byte_alignment[0] = 0x64326432;
- xssc->pad_for_16byte_alignment[1] = 0x64326432;
- }
-#endif
- } else {
- x86_sframe32_t *sf32;
-
- sf32 = (x86_sframe32_t *)zalloc(iss_zone32);
-
- if (sf32 == NULL)
- panic("iss_zone32");
- pcb->sf = (void *)sf32;
-
- bzero((char *)sf32, sizeof(x86_sframe32_t));
-
- iss = (x86_saved_state_t *) &sf32->ssf;
- iss->flavor = x86_SAVED_STATE32;
- }
- /*
- * Guarantee that the bootstrapped thread will be in user
- * mode.
- */
- iss->ss_32.cs = USER_CS;
- iss->ss_32.ss = USER_DS;
- iss->ss_32.ds = USER_DS;
- iss->ss_32.es = USER_DS;
- iss->ss_32.fs = USER_DS;
- iss->ss_32.gs = USER_DS;
- iss->ss_32.efl = EFL_USER_SET;
- }
- pcb->iss = iss;
+ pcb_t pcb = &thread->machine.xxx_pcb;
thread->machine.pcb = pcb;
- simple_lock_init(&pcb->lock, 0);
- ldtp = (struct real_descriptor *)pmap_index_to_virt(HIGH_FIXED_LDT_BEGIN);
- pcb->cthread_desc = ldtp[sel_idx(USER_DS)];
- pcb->uldt_desc = ldtp[sel_idx(USER_DS)];
- pcb->uldt_selector = 0;
+ simple_lock_init(&pcb->lock, 0);
- pcb->iss_pte0 = (uint64_t)pte_kernel_rw(kvtophys((vm_offset_t)pcb->iss));
+ /*
+ * Guarantee that the bootstrapped thread will be in user
+ * mode.
+ */
+ pcb->iss.cs = USER_CS;
+ pcb->iss.ss = USER_DS;
+ pcb->iss.ds = USER_DS;
+ pcb->iss.es = USER_DS;
+ pcb->iss.fs = USER_DS;
+ pcb->iss.gs = USER_DS;
+ pcb->iss.efl = EFL_USER_SET;
+ {
+ struct real_descriptor *ldtp;
+ ldtp = (struct real_descriptor *)ldt;
+ pcb->cthread_desc = ldtp[sel_idx(USER_DS)];
+ pcb->uldt_desc = ldtp[sel_idx(USER_DS)];
+ pcb->uldt_selector = 0;
+ }
- if (0 == (paddr = pa_to_pte(kvtophys((vm_offset_t)(pcb->iss) + PAGE_SIZE))))
- pcb->iss_pte1 = INTEL_PTE_INVALID;
- else
- pcb->iss_pte1 = (uint64_t)pte_kernel_rw(paddr);
+ /*
+ * Allocate a kernel stack per thread.
+ */
+ stack_alloc(thread);
return(KERN_SUCCESS);
}
assert(pcb);
- if (pcb->ifps != 0)
- fpu_free(pcb->ifps);
- if (pcb->sf != 0) {
- if (thread_is_64bit(thread))
- zfree(iss_zone64, pcb->sf);
- else
- zfree(iss_zone32, pcb->sf);
- pcb->sf = 0;
- }
- if (pcb->ids) {
- if (thread_is_64bit(thread))
- zfree(ids_zone64, pcb->ids);
- else
- zfree(ids_zone32, pcb->ids);
- }
+ if (pcb->ims.io_tss != 0)
+ iopb_destroy(pcb->ims.io_tss);
+ if (pcb->ims.ifps != 0)
+ fpu_free(pcb->ims.ifps);
+ if (pcb->ims.ldt != 0)
+ user_ldt_free(pcb->ims.ldt);
thread->machine.pcb = (pcb_t)0;
-
-}
-
-void
-machine_thread_switch_addrmode(thread_t thread, int oldmode_is64bit)
-{
- register pcb_t pcb = thread->machine.pcb;
-
- assert(pcb);
-
- if (pcb->sf != 0) {
- if (oldmode_is64bit)
- zfree(iss_zone64, pcb->sf);
- else
- zfree(iss_zone32, pcb->sf);
- }
- machine_thread_create(thread, thread->task);
-
- /* If we're switching ourselves, reset the pcb addresses etc. */
- if (thread == current_thread())
- act_machine_switch_pcb(thread);
}
-
-
/*
* This is used to set the current thr_act/thread
* when starting up a new processor
void
machine_set_current_thread( thread_t thread )
{
- current_cpu_datap()->cpu_active_thread = thread;
+ mp_disable_preemption();
+
+ current_cpu_datap()->cpu_active_thread = thread;
+ current_cpu_datap()->cpu_active_kloaded = THREAD_NULL;
+
+ mp_enable_preemption();
}
-/*
- * This is called when a task is termianted.
- */
void
machine_thread_terminate_self(void)
{
- task_t self_task = current_task();
- if (self_task) {
- user_ldt_t user_ldt = self_task->i386_ldt;
- if (user_ldt != 0) {
- self_task->i386_ldt = 0;
- user_ldt_free(user_ldt);
- }
- }
}
void
void
machine_thread_init(void)
{
- if (cpu_mode_is64bit()) {
- iss_zone64 = zinit(sizeof(x86_sframe64_t),
- THREAD_MAX * sizeof(x86_sframe64_t),
- THREAD_CHUNK * sizeof(x86_sframe64_t),
- "x86_64 saved state");
-
- assert(sizeof(x86_sframe_compat32_t) % 16 == 0);
- iss_zone32 = zinit(sizeof(x86_sframe_compat32_t),
- THREAD_MAX * sizeof(x86_sframe_compat32_t),
- THREAD_CHUNK * sizeof(x86_sframe_compat32_t),
- "x86_32 saved state");
-
- ids_zone32 = zinit(sizeof(x86_debug_state32_t),
- THREAD_MAX * (sizeof(x86_debug_state32_t)),
- THREAD_CHUNK * (sizeof(x86_debug_state32_t)),
- "x86_32 debug state");
- ids_zone64 = zinit(sizeof(x86_debug_state64_t),
- THREAD_MAX * sizeof(x86_debug_state64_t),
- THREAD_CHUNK * sizeof(x86_debug_state64_t),
- "x86_64 debug state");
-
- } else {
- iss_zone32 = zinit(sizeof(x86_sframe32_t),
- THREAD_MAX * sizeof(x86_sframe32_t),
- THREAD_CHUNK * sizeof(x86_sframe32_t),
- "x86 saved state");
- ids_zone32 = zinit(sizeof(x86_debug_state32_t),
- THREAD_MAX * (sizeof(x86_debug_state32_t)),
- THREAD_CHUNK * (sizeof(x86_debug_state32_t)),
- "x86 debug state");
- }
fpu_module_init();
iopb_init();
}
void
dump_regs(thread_t thr_act)
{
- if (thr_act->machine.pcb == NULL)
- return;
-
- if (thread_is_64bit(thr_act)) {
- x86_saved_state64_t *ssp;
-
- ssp = USER_REGS64(thr_act);
-
- panic("dump_regs: 64bit tasks not yet supported");
-
- } else {
- x86_saved_state32_t *ssp;
-
- ssp = USER_REGS32(thr_act);
-
- /*
- * Print out user register state
- */
+ if (thr_act->machine.pcb) {
+ register struct i386_saved_state *ssp = USER_REGS(thr_act);
+ /* Print out user register state */
printf("\tRegs:\tedi=%x esi=%x ebp=%x ebx=%x edx=%x\n",
ssp->edi, ssp->esi, ssp->ebp, ssp->ebx, ssp->edx);
-
printf("\t\tecx=%x eax=%x eip=%x efl=%x uesp=%x\n",
ssp->ecx, ssp->eax, ssp->eip, ssp->efl, ssp->uesp);
-
printf("\t\tcs=%x ss=%x\n", ssp->cs, ssp->ss);
}
}
user_addr_t
get_useraddr(void)
{
+
thread_t thr_act = current_thread();
- if (thr_act->machine.pcb == NULL)
- return (0);
-
- if (thread_is_64bit(thr_act)) {
- x86_saved_state64_t *iss64;
-
- iss64 = USER_REGS64(thr_act);
-
- return(iss64->isf.rip);
- } else {
- x86_saved_state32_t *iss32;
-
- iss32 = USER_REGS32(thr_act);
+ if (thr_act->machine.pcb)
+ return(thr_act->machine.pcb->iss.eip);
+ else
+ return(0);
- return(iss32->eip);
- }
}
/*
vm_offset_t
machine_stack_detach(thread_t thread)
{
- vm_offset_t stack;
+ vm_offset_t stack;
- KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_DETACH),
- thread, thread->priority,
- thread->sched_pri, 0,
- 0);
+ KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_DETACH),
+ thread, thread->priority,
+ thread->sched_pri, 0,
+ 0);
- stack = thread->kernel_stack;
- thread->kernel_stack = 0;
-
- return (stack);
+ stack = thread->kernel_stack;
+ thread->kernel_stack = 0;
+ return(stack);
}
/*
thread_t thread,
vm_offset_t stack)
{
- struct x86_kernel_state32 *statep;
+ struct i386_kernel_state *statep;
+
+ KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_ATTACH),
+ thread, thread->priority,
+ thread->sched_pri, 0, 0);
- KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_ATTACH),
- thread, thread->priority,
- thread->sched_pri, 0, 0);
+ assert(stack);
+ statep = STACK_IKS(stack);
+ thread->kernel_stack = stack;
- assert(stack);
- thread->kernel_stack = stack;
+ statep->k_eip = (unsigned long) Thread_continue;
+ statep->k_ebx = (unsigned long) thread_continue;
+ statep->k_esp = (unsigned long) STACK_IEL(stack);
- statep = STACK_IKS(stack);
- statep->k_eip = (unsigned long) Thread_continue;
- statep->k_ebx = (unsigned long) thread_continue;
- statep->k_esp = (unsigned long) STACK_IEL(stack);
+ STACK_IEL(stack)->saved_state = &thread->machine.pcb->iss;
- return;
+ return;
}
/*
machine_stack_handoff(thread_t old,
thread_t new)
{
- vm_offset_t stack;
+ vm_offset_t stack;
- assert(new);
- assert(old);
+ KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_HANDOFF),
+ thread, thread->priority,
+ thread->sched_pri, 0, 0);
- stack = old->kernel_stack;
- if (stack == old->reserved_stack) {
- assert(new->reserved_stack);
- old->reserved_stack = new->reserved_stack;
- new->reserved_stack = stack;
- }
- old->kernel_stack = 0;
- /*
- * A full call to machine_stack_attach() is unnecessry
- * because old stack is already initialized.
- */
- new->kernel_stack = stack;
+ assert(new);
+ assert(old);
- fpu_save_context(old);
+ stack = machine_stack_detach(old);
+ machine_stack_attach(new, stack);
- old->machine.specFlags &= ~OnProc;
- new->machine.specFlags |= OnProc;
+ PMAP_SWITCH_CONTEXT(old->task, new->task, cpu_number());
- PMAP_SWITCH_CONTEXT(old, new, cpu_number());
- act_machine_switch_pcb(new);
+ KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_HANDOFF) | DBG_FUNC_NONE,
+ (int)old, (int)new, old->sched_pri, new->sched_pri, 0);
- KERNEL_DEBUG_CONSTANT(
- MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_HANDOFF)|DBG_FUNC_NONE,
- old->reason, (int)new, old->sched_pri, new->sched_pri, 0);
+ machine_set_current_thread(new);
- machine_set_current_thread(new);
+ current_cpu_datap()->cpu_active_stack = new->kernel_stack;
- return;
+ return;
}
-
-
-
-struct x86_act_context32 {
- x86_saved_state32_t ss;
- x86_float_state32_t fs;
- x86_debug_state32_t ds;
-};
-
-struct x86_act_context64 {
- x86_saved_state64_t ss;
- x86_float_state64_t fs;
- x86_debug_state64_t ds;
+struct i386_act_context {
+ struct i386_saved_state ss;
+ struct i386_float_state fs;
};
-
-
void *
act_thread_csave(void)
{
- kern_return_t kret;
- mach_msg_type_number_t val;
- thread_t thr_act = current_thread();
-
- if (thread_is_64bit(thr_act)) {
- struct x86_act_context64 *ic64;
+struct i386_act_context *ic;
+kern_return_t kret;
+int val;
- ic64 = (struct x86_act_context64 *)kalloc(sizeof(struct x86_act_context64));
-
- if (ic64 == (struct x86_act_context64 *)NULL)
- return((void *)0);
-
- val = x86_SAVED_STATE64_COUNT;
- kret = machine_thread_get_state(thr_act, x86_SAVED_STATE64,
- (thread_state_t) &ic64->ss, &val);
- if (kret != KERN_SUCCESS) {
- kfree(ic64, sizeof(struct x86_act_context64));
- return((void *)0);
- }
- val = x86_FLOAT_STATE64_COUNT;
- kret = machine_thread_get_state(thr_act, x86_FLOAT_STATE64,
- (thread_state_t) &ic64->fs, &val);
+ ic = (struct i386_act_context *)kalloc(sizeof(struct i386_act_context));
- if (kret != KERN_SUCCESS) {
- kfree(ic64, sizeof(struct x86_act_context64));
- return((void *)0);
- }
+ if (ic == (struct i386_act_context *)NULL)
+ return((void *)0);
- val = x86_DEBUG_STATE64_COUNT;
- kret = machine_thread_get_state(thr_act,
- x86_DEBUG_STATE64,
- (thread_state_t)&ic64->ds,
+ val = i386_SAVED_STATE_COUNT;
+ kret = machine_thread_get_state(current_thread(),
+ i386_SAVED_STATE,
+ (thread_state_t) &ic->ss,
&val);
if (kret != KERN_SUCCESS) {
- kfree(ic64, sizeof(struct x86_act_context64));
- return((void *)0);
- }
- return(ic64);
-
- } else {
- struct x86_act_context32 *ic32;
-
- ic32 = (struct x86_act_context32 *)kalloc(sizeof(struct x86_act_context32));
-
- if (ic32 == (struct x86_act_context32 *)NULL)
- return((void *)0);
-
- val = x86_SAVED_STATE32_COUNT;
- kret = machine_thread_get_state(thr_act, x86_SAVED_STATE32,
- (thread_state_t) &ic32->ss, &val);
- if (kret != KERN_SUCCESS) {
- kfree(ic32, sizeof(struct x86_act_context32));
- return((void *)0);
+ kfree(ic,sizeof(struct i386_act_context));
+ return((void *)0);
}
- val = x86_FLOAT_STATE32_COUNT;
- kret = machine_thread_get_state(thr_act, x86_FLOAT_STATE32,
- (thread_state_t) &ic32->fs, &val);
- if (kret != KERN_SUCCESS) {
- kfree(ic32, sizeof(struct x86_act_context32));
- return((void *)0);
- }
-
- val = x86_DEBUG_STATE32_COUNT;
- kret = machine_thread_get_state(thr_act,
- x86_DEBUG_STATE32,
- (thread_state_t)&ic32->ds,
+ val = i386_FLOAT_STATE_COUNT;
+ kret = machine_thread_get_state(current_thread(),
+ i386_FLOAT_STATE,
+ (thread_state_t) &ic->fs,
&val);
if (kret != KERN_SUCCESS) {
- kfree(ic32, sizeof(struct x86_act_context32));
- return((void *)0);
+ kfree(ic,sizeof(struct i386_act_context));
+ return((void *)0);
}
- return(ic32);
- }
+ return(ic);
}
-
-
void
act_thread_catt(void *ctx)
{
- thread_t thr_act = current_thread();
- kern_return_t kret;
-
- if (ctx == (void *)NULL)
- return;
-
- if (thread_is_64bit(thr_act)) {
- struct x86_act_context64 *ic64;
-
- ic64 = (struct x86_act_context64 *)ctx;
-
- kret = machine_thread_set_state(thr_act, x86_SAVED_STATE64,
- (thread_state_t) &ic64->ss, x86_SAVED_STATE64_COUNT);
- if (kret == KERN_SUCCESS) {
- machine_thread_set_state(thr_act, x86_FLOAT_STATE64,
- (thread_state_t) &ic64->fs, x86_FLOAT_STATE64_COUNT);
- }
- kfree(ic64, sizeof(struct x86_act_context64));
- } else {
- struct x86_act_context32 *ic32;
-
- ic32 = (struct x86_act_context32 *)ctx;
-
- kret = machine_thread_set_state(thr_act, x86_SAVED_STATE32,
- (thread_state_t) &ic32->ss, x86_SAVED_STATE32_COUNT);
- if (kret == KERN_SUCCESS) {
- kret = machine_thread_set_state(thr_act, x86_FLOAT_STATE32,
- (thread_state_t) &ic32->fs, x86_FLOAT_STATE32_COUNT);
- if (kret == KERN_SUCCESS && thr_act->machine.pcb->ids)
- machine_thread_set_state(thr_act,
- x86_DEBUG_STATE32,
- (thread_state_t)&ic32->ds,
- x86_DEBUG_STATE32_COUNT);
- }
- kfree(ic32, sizeof(struct x86_act_context32));
- }
+struct i386_act_context *ic;
+kern_return_t kret;
+
+ ic = (struct i386_act_context *)ctx;
+
+ if (ic == (struct i386_act_context *)NULL)
+ return;
+
+ kret = machine_thread_set_state(current_thread(),
+ i386_SAVED_STATE,
+ (thread_state_t) &ic->ss,
+ i386_SAVED_STATE_COUNT);
+ if (kret != KERN_SUCCESS)
+ goto out;
+
+ kret = machine_thread_set_state(current_thread(),
+ i386_FLOAT_STATE,
+ (thread_state_t) &ic->fs,
+ i386_FLOAT_STATE_COUNT);
+ if (kret != KERN_SUCCESS)
+ goto out;
+out:
+ kfree(ic,sizeof(struct i386_act_context));
}
-
-void act_thread_cfree(__unused void *ctx)
+void act_thread_cfree(void *ctx)
{
- /* XXX - Unused */
+ kfree(ctx,sizeof(struct i386_act_context));
}
+
projects / apple / xnu.git / blobdiff