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linux-sg2042
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x86: use generic register name in the thread and tss structures 

This changes size-specific register names (eip/rip, esp/rsp, etc.) to
generic names in the thread and tss structures.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
H. Peter Anvin 2008-01-30 13:31:02 +01:00 committed by Ingo Molnar
parent 25149b62d3
commit faca62273b
23 changed files with 99 additions and 101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kernel/asm-offsets_32.c
View File

@ -101,8 +101,8 @@ void foo(void)
OFFSET(pbe_orig_address, pbe, orig_address);
OFFSET(pbe_next, pbe, next);
/* Offset from the sysenter stack to tss.esp0 */
DEFINE(TSS_sysenter_esp0, offsetof(struct tss_struct, x86_tss.esp0) -
/* Offset from the sysenter stack to tss.sp0 */
DEFINE(TSS_sysenter_sp0, offsetof(struct tss_struct, x86_tss.sp0) -
sizeof(struct tss_struct));
DEFINE(PAGE_SIZE_asm, PAGE_SIZE);

2
arch/x86/kernel/cpu/common.c
View File

@ -691,7 +691,7 @@ void __cpuinit cpu_init(void)
BUG();
enter_lazy_tlb(&init_mm, curr);
load_esp0(t, thread);
load_sp0(t, thread);
set_tss_desc(cpu,t);
load_TR_desc();
load_LDT(&init_mm.context);

15
arch/x86/kernel/doublefault_32.c
View File

@ -35,12 +35,13 @@ static void doublefault_fn(void)
if (ptr_ok(tss)) {
struct i386_hw_tss *t = (struct i386_hw_tss *)tss;
printk(KERN_EMERG "eip = %08lx, esp = %08lx\n", t->eip, t->esp);
printk(KERN_EMERG "eip = %08lx, esp = %08lx\n",
t->ip, t->sp);
printk(KERN_EMERG "eax = %08lx, ebx = %08lx, ecx = %08lx, edx = %08lx\n",
t->eax, t->ebx, t->ecx, t->edx);
t->ax, t->bx, t->cx, t->dx);
printk(KERN_EMERG "esi = %08lx, edi = %08lx\n",
t->esi, t->edi);
t->si, t->di);
}
}
@ -50,15 +51,15 @@ static void doublefault_fn(void)
struct tss_struct doublefault_tss __cacheline_aligned = {
.x86_tss = {
.esp0 = STACK_START,
.sp0 = STACK_START,
.ss0 = __KERNEL_DS,
.ldt = 0,
.io_bitmap_base = INVALID_IO_BITMAP_OFFSET,
.eip = (unsigned long) doublefault_fn,
.ip = (unsigned long) doublefault_fn,
/* 0x2 bit is always set */
.eflags = X86_EFLAGS_SF | 0x2,
.esp = STACK_START,
.flags = X86_EFLAGS_SF | 0x2,
.sp = STACK_START,
.es = __USER_DS,
.cs = __KERNEL_CS,
.ss = __KERNEL_DS,

6
arch/x86/kernel/entry_32.S
View File

@ -288,7 +288,7 @@ ENTRY(ia32_sysenter_target)
CFI_SIGNAL_FRAME
CFI_DEF_CFA esp, 0
CFI_REGISTER esp, ebp
movl TSS_sysenter_esp0(%esp),%esp
movl TSS_sysenter_sp0(%esp),%esp
sysenter_past_esp:
/*
* No need to follow this irqs on/off section: the syscall
@ -743,7 +743,7 @@ END(device_not_available)
* that sets up the real kernel stack. Check here, since we can't
* allow the wrong stack to be used.
*
* "TSS_sysenter_esp0+12" is because the NMI/debug handler will have
* "TSS_sysenter_sp0+12" is because the NMI/debug handler will have
* already pushed 3 words if it hits on the sysenter instruction:
* eflags, cs and eip.
*
@ -755,7 +755,7 @@ END(device_not_available)
cmpw $__KERNEL_CS,4(%esp); \
jne ok; \
label: \
movl TSS_sysenter_esp0+offset(%esp),%esp; \
movl TSS_sysenter_sp0+offset(%esp),%esp; \
CFI_DEF_CFA esp, 0; \
CFI_UNDEFINED eip; \
pushfl; \

2
arch/x86/kernel/paravirt_32.c
View File

@ -382,7 +382,7 @@ struct pv_cpu_ops pv_cpu_ops = {
.write_ldt_entry = write_dt_entry,
.write_gdt_entry = write_dt_entry,
.write_idt_entry = write_dt_entry,
.load_esp0 = native_load_esp0,
.load_sp0 = native_load_sp0,
.irq_enable_syscall_ret = native_irq_enable_syscall_ret,
.iret = native_iret,

12
arch/x86/kernel/process_32.c
View File

@ -75,7 +75,7 @@ EXPORT_PER_CPU_SYMBOL(cpu_number);
*/
unsigned long thread_saved_pc(struct task_struct *tsk)
{
return ((unsigned long *)tsk->thread.esp)[3];
return ((unsigned long *)tsk->thread.sp)[3];
}
/*
@ -488,10 +488,10 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
childregs->ax = 0;
childregs->sp = sp;
p->thread.esp = (unsigned long) childregs;
p->thread.esp0 = (unsigned long) (childregs+1);
p->thread.sp = (unsigned long) childregs;
p->thread.sp0 = (unsigned long) (childregs+1);
p->thread.eip = (unsigned long) ret_from_fork;
p->thread.ip = (unsigned long) ret_from_fork;
savesegment(gs,p->thread.gs);
@ -718,7 +718,7 @@ struct task_struct fastcall * __switch_to(struct task_struct *prev_p, struct tas
/*
* Reload esp0.
*/
load_esp0(tss, next);
load_sp0(tss, next);
/*
* Save away %gs. No need to save %fs, as it was saved on the
@ -851,7 +851,7 @@ unsigned long get_wchan(struct task_struct *p)
if (!p || p == current || p->state == TASK_RUNNING)
return 0;
stack_page = (unsigned long)task_stack_page(p);
sp = p->thread.esp;
sp = p->thread.sp;
if (!stack_page || sp < stack_page || sp > top_esp+stack_page)
return 0;
/* include/asm-i386/system.h:switch_to() pushes bp last. */

16
arch/x86/kernel/process_64.c
View File

@ -493,9 +493,9 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
if (sp == ~0UL)
childregs->sp = (unsigned long)childregs;
p->thread.rsp = (unsigned long) childregs;
p->thread.rsp0 = (unsigned long) (childregs+1);
p->thread.userrsp = me->thread.userrsp;
p->thread.sp = (unsigned long) childregs;
p->thread.sp0 = (unsigned long) (childregs+1);
p->thread.usersp = me->thread.usersp;
set_tsk_thread_flag(p, TIF_FORK);
@ -607,7 +607,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
/*
* Reload esp0, LDT and the page table pointer:
*/
tss->rsp0 = next->rsp0;
tss->sp0 = next->sp0;
/*
* Switch DS and ES.
@ -666,8 +666,8 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
/*
* Switch the PDA and FPU contexts.
*/
prev->userrsp = read_pda(oldrsp);
write_pda(oldrsp, next->userrsp);
prev->usersp = read_pda(oldrsp);
write_pda(oldrsp, next->usersp);
write_pda(pcurrent, next_p);
write_pda(kernelstack,
@ -769,9 +769,9 @@ unsigned long get_wchan(struct task_struct *p)
if (!p || p == current || p->state==TASK_RUNNING)
return 0;
stack = (unsigned long)task_stack_page(p);
if (p->thread.rsp < stack || p->thread.rsp > stack+THREAD_SIZE)
if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE)
return 0;
fp = *(u64 *)(p->thread.rsp);
fp = *(u64 *)(p->thread.sp);
do {
if (fp < (unsigned long)stack ||
fp > (unsigned long)stack+THREAD_SIZE)

8
arch/x86/kernel/smpboot_32.c
View File

@ -454,7 +454,7 @@ void __devinit initialize_secondary(void)
"movl %0,%%esp\n\t"
"jmp *%1"
:
:"m" (current->thread.esp),"m" (current->thread.eip));
:"m" (current->thread.sp),"m" (current->thread.ip));
}
/* Static state in head.S used to set up a CPU */
@ -753,7 +753,7 @@ static inline struct task_struct * __cpuinit alloc_idle_task(int cpu)
/* initialize thread_struct. we really want to avoid destroy
* idle tread
*/
idle->thread.esp = (unsigned long)task_pt_regs(idle);
idle->thread.sp = (unsigned long)task_pt_regs(idle);
init_idle(idle, cpu);
return idle;
}
@ -798,7 +798,7 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
per_cpu(current_task, cpu) = idle;
early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
idle->thread.eip = (unsigned long) start_secondary;
idle->thread.ip = (unsigned long) start_secondary;
/* start_eip had better be page-aligned! */
start_eip = setup_trampoline();
@ -808,7 +808,7 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
/* So we see what's up */
printk("Booting processor %d/%d ip %lx\n", cpu, apicid, start_eip);
/* Stack for startup_32 can be just as for start_secondary onwards */
stack_start.sp = (void *) idle->thread.esp;
stack_start.sp = (void *) idle->thread.sp;
irq_ctx_init(cpu);

6
arch/x86/kernel/smpboot_64.c
View File

@ -577,7 +577,7 @@ static int __cpuinit do_boot_cpu(int cpu, int apicid)
c_idle.idle = get_idle_for_cpu(cpu);
if (c_idle.idle) {
c_idle.idle->thread.rsp = (unsigned long) (((struct pt_regs *)
c_idle.idle->thread.sp = (unsigned long) (((struct pt_regs *)
(THREAD_SIZE + task_stack_page(c_idle.idle))) - 1);
init_idle(c_idle.idle, cpu);
goto do_rest;
@ -613,8 +613,8 @@ do_rest:
start_rip = setup_trampoline();
init_rsp = c_idle.idle->thread.rsp;
per_cpu(init_tss,cpu).rsp0 = init_rsp;
init_rsp = c_idle.idle->thread.sp;
per_cpu(init_tss,cpu).sp0 = init_rsp;
initial_code = start_secondary;
clear_tsk_thread_flag(c_idle.idle, TIF_FORK);

6
arch/x86/kernel/traps_32.c
View File

@ -163,7 +163,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
unsigned long dummy;
stack = &dummy;
if (task != current)
stack = (unsigned long *)task->thread.esp;
stack = (unsigned long *)task->thread.sp;
}
#ifdef CONFIG_FRAME_POINTER
@ -173,7 +173,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
asm ("movl %%ebp, %0" : "=r" (bp) : );
} else {
/* bp is the last reg pushed by switch_to */
bp = *(unsigned long *) task->thread.esp;
bp = *(unsigned long *) task->thread.sp;
}
}
#endif
@ -253,7 +253,7 @@ static void show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
if (sp == NULL) {
if (task)
sp = (unsigned long*)task->thread.esp;
sp = (unsigned long*)task->thread.sp;
else
sp = (unsigned long *)&sp;
}

4
arch/x86/kernel/traps_64.c
View File

@ -230,7 +230,7 @@ void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
unsigned long dummy;
stack = &dummy;
if (tsk && tsk != current)
stack = (unsigned long *)tsk->thread.rsp;
stack = (unsigned long *)tsk->thread.sp;
}
/*
@ -366,7 +366,7 @@ _show_stack(struct task_struct *tsk, struct pt_regs *regs, unsigned long *sp)
if (sp == NULL) {
if (tsk)
sp = (unsigned long *)tsk->thread.rsp;
sp = (unsigned long *)tsk->thread.sp;
else
sp = (unsigned long *)&sp;
}

16
arch/x86/kernel/vm86_32.c
View File

@ -147,10 +147,10 @@ struct pt_regs * fastcall save_v86_state(struct kernel_vm86_regs * regs)
}
tss = &per_cpu(init_tss, get_cpu());
current->thread.esp0 = current->thread.saved_esp0;
current->thread.sp0 = current->thread.saved_sp0;
current->thread.sysenter_cs = __KERNEL_CS;
load_esp0(tss, &current->thread);
current->thread.saved_esp0 = 0;
load_sp0(tss, &current->thread);
current->thread.saved_sp0 = 0;
put_cpu();
ret = KVM86->regs32;
@ -207,7 +207,7 @@ asmlinkage int sys_vm86old(struct pt_regs regs)
int tmp, ret = -EPERM;
tsk = current;
if (tsk->thread.saved_esp0)
if (tsk->thread.saved_sp0)
goto out;
tmp = copy_vm86_regs_from_user(&info.regs, &v86->regs,
offsetof(struct kernel_vm86_struct, vm86plus) -
@ -256,7 +256,7 @@ asmlinkage int sys_vm86(struct pt_regs regs)
/* we come here only for functions VM86_ENTER, VM86_ENTER_NO_BYPASS */
ret = -EPERM;
if (tsk->thread.saved_esp0)
if (tsk->thread.saved_sp0)
goto out;
v86 = (struct vm86plus_struct __user *)regs.cx;
tmp = copy_vm86_regs_from_user(&info.regs, &v86->regs,
@ -318,15 +318,15 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
* Save old state, set default return value (%ax) to 0
*/
info->regs32->ax = 0;
tsk->thread.saved_esp0 = tsk->thread.esp0;
tsk->thread.saved_sp0 = tsk->thread.sp0;
tsk->thread.saved_fs = info->regs32->fs;
savesegment(gs, tsk->thread.saved_gs);
tss = &per_cpu(init_tss, get_cpu());
tsk->thread.esp0 = (unsigned long) &info->VM86_TSS_ESP0;
tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0;
if (cpu_has_sep)
tsk->thread.sysenter_cs = 0;
load_esp0(tss, &tsk->thread);
load_sp0(tss, &tsk->thread);
put_cpu();
tsk->thread.screen_bitmap = info->screen_bitmap;

10
arch/x86/kernel/vmi_32.c
View File

@ -62,7 +62,7 @@ static struct {
void (*cpuid)(void /* non-c */);
void (*_set_ldt)(u32 selector);
void (*set_tr)(u32 selector);
void (*set_kernel_stack)(u32 selector, u32 esp0);
void (*set_kernel_stack)(u32 selector, u32 sp0);
void (*allocate_page)(u32, u32, u32, u32, u32);
void (*release_page)(u32, u32);
void (*set_pte)(pte_t, pte_t *, unsigned);
@ -214,17 +214,17 @@ static void vmi_set_tr(void)
vmi_ops.set_tr(GDT_ENTRY_TSS*sizeof(struct desc_struct));
}
static void vmi_load_esp0(struct tss_struct *tss,
static void vmi_load_sp0(struct tss_struct *tss,
struct thread_struct *thread)
{
tss->x86_tss.esp0 = thread->esp0;
tss->x86_tss.sp0 = thread->sp0;
/* This can only happen when SEP is enabled, no need to test "SEP"arately */
if (unlikely(tss->x86_tss.ss1 != thread->sysenter_cs)) {
tss->x86_tss.ss1 = thread->sysenter_cs;
wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
}
vmi_ops.set_kernel_stack(__KERNEL_DS, tss->x86_tss.esp0);
vmi_ops.set_kernel_stack(__KERNEL_DS, tss->x86_tss.sp0);
}
static void vmi_flush_tlb_user(void)
@ -793,7 +793,7 @@ static inline int __init activate_vmi(void)
para_fill(pv_cpu_ops.write_ldt_entry, WriteLDTEntry);
para_fill(pv_cpu_ops.write_gdt_entry, WriteGDTEntry);
para_fill(pv_cpu_ops.write_idt_entry, WriteIDTEntry);
para_wrap(pv_cpu_ops.load_esp0, vmi_load_esp0, set_kernel_stack, UpdateKernelStack);
para_wrap(pv_cpu_ops.load_sp0, vmi_load_sp0, set_kernel_stack, UpdateKernelStack);
para_fill(pv_cpu_ops.set_iopl_mask, SetIOPLMask);
para_fill(pv_cpu_ops.io_delay, IODelay);

6
arch/x86/lguest/boot.c
View File

@ -755,10 +755,10 @@ static void lguest_time_init(void)
* segment), the privilege level (we're privilege level 1, the Host is 0 and
* will not tolerate us trying to use that), the stack pointer, and the number
* of pages in the stack. */
static void lguest_load_esp0(struct tss_struct *tss,
static void lguest_load_sp0(struct tss_struct *tss,
struct thread_struct *thread)
{
lazy_hcall(LHCALL_SET_STACK, __KERNEL_DS|0x1, thread->esp0,
lazy_hcall(LHCALL_SET_STACK, __KERNEL_DS|0x1, thread->sp0,
THREAD_SIZE/PAGE_SIZE);
}
@ -957,7 +957,7 @@ __init void lguest_init(void)
pv_cpu_ops.cpuid = lguest_cpuid;
pv_cpu_ops.load_idt = lguest_load_idt;
pv_cpu_ops.iret = lguest_iret;
pv_cpu_ops.load_esp0 = lguest_load_esp0;
pv_cpu_ops.load_sp0 = lguest_load_sp0;
pv_cpu_ops.load_tr_desc = lguest_load_tr_desc;
pv_cpu_ops.set_ldt = lguest_set_ldt;
pv_cpu_ops.load_tls = lguest_load_tls;

4
arch/x86/vdso/vdso32-setup.c
View File

@ -243,9 +243,9 @@ void enable_sep_cpu(void)
}
tss->x86_tss.ss1 = __KERNEL_CS;
tss->x86_tss.esp1 = sizeof(struct tss_struct) + (unsigned long) tss;
tss->x86_tss.sp1 = sizeof(struct tss_struct) + (unsigned long) tss;
wrmsr(MSR_IA32_SYSENTER_CS, __KERNEL_CS, 0);
wrmsr(MSR_IA32_SYSENTER_ESP, tss->x86_tss.esp1, 0);
wrmsr(MSR_IA32_SYSENTER_ESP, tss->x86_tss.sp1, 0);
wrmsr(MSR_IA32_SYSENTER_EIP, (unsigned long) ia32_sysenter_target, 0);
put_cpu();
}

6
arch/x86/xen/enlighten.c
View File

@ -499,11 +499,11 @@ static void xen_write_gdt_entry(struct desc_struct *dt, int entry,
preempt_enable();
}
static void xen_load_esp0(struct tss_struct *tss,
static void xen_load_sp0(struct tss_struct *tss,
struct thread_struct *thread)
{
struct multicall_space mcs = xen_mc_entry(0);
MULTI_stack_switch(mcs.mc, __KERNEL_DS, thread->esp0);
MULTI_stack_switch(mcs.mc, __KERNEL_DS, thread->sp0);
xen_mc_issue(PARAVIRT_LAZY_CPU);
}
@ -968,7 +968,7 @@ static const struct pv_cpu_ops xen_cpu_ops __initdata = {
.write_ldt_entry = xen_write_ldt_entry,
.write_gdt_entry = xen_write_gdt_entry,
.write_idt_entry = xen_write_idt_entry,
.load_esp0 = xen_load_esp0,
.load_sp0 = xen_load_sp0,
.set_iopl_mask = xen_set_iopl_mask,
.io_delay = xen_io_delay,

4
arch/x86/xen/smp.c
View File

@ -239,10 +239,10 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
ctxt->gdt_ents = ARRAY_SIZE(gdt->gdt);
ctxt->user_regs.cs = __KERNEL_CS;
ctxt->user_regs.esp = idle->thread.esp0 - sizeof(struct pt_regs);
ctxt->user_regs.esp = idle->thread.sp0 - sizeof(struct pt_regs);
ctxt->kernel_ss = __KERNEL_DS;
ctxt->kernel_sp = idle->thread.esp0;
ctxt->kernel_sp = idle->thread.sp0;
ctxt->event_callback_cs = __KERNEL_CS;
ctxt->event_callback_eip = (unsigned long)xen_hypervisor_callback;

4
drivers/lguest/x86/core.c
View File

@ -94,7 +94,7 @@ static void copy_in_guest_info(struct lguest *lg, struct lguest_pages *pages)
/* Set up the two "TSS" members which tell the CPU what stack to use
* for traps which do directly into the Guest (ie. traps at privilege
* level 1). */
pages->state.guest_tss.esp1 = lg->esp1;
pages->state.guest_tss.sp1 = lg->esp1;
pages->state.guest_tss.ss1 = lg->ss1;
/* Copy direct-to-Guest trap entries. */
@ -416,7 +416,7 @@ void __init lguest_arch_host_init(void)
/* We know where we want the stack to be when the Guest enters
* the switcher: in pages->regs. The stack grows upwards, so
* we start it at the end of that structure. */
state->guest_tss.esp0 = (long)(&pages->regs + 1);
state->guest_tss.sp0 = (long)(&pages->regs + 1);
/* And this is the GDT entry to use for the stack: we keep a
* couple of special LGUEST entries. */
state->guest_tss.ss0 = LGUEST_DS;

6
include/asm-x86/paravirt.h
View File

@ -101,7 +101,7 @@ struct pv_cpu_ops {
int entrynum, u32 low, u32 high);
void (*write_idt_entry)(struct desc_struct *,
int entrynum, u32 low, u32 high);
void (*load_esp0)(struct tss_struct *tss, struct thread_struct *t);
void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t);
void (*set_iopl_mask)(unsigned mask);
@ -449,10 +449,10 @@ static inline int paravirt_enabled(void)
return pv_info.paravirt_enabled;
}
static inline void load_esp0(struct tss_struct *tss,
static inline void load_sp0(struct tss_struct *tss,
struct thread_struct *thread)
{
PVOP_VCALL2(pv_cpu_ops.load_esp0, tss, thread);
PVOP_VCALL2(pv_cpu_ops.load_sp0, tss, thread);
}
#define ARCH_SETUP pv_init_ops.arch_setup();

37
include/asm-x86/processor_32.h
View File

@ -292,20 +292,17 @@ struct thread_struct;
/* This is the TSS defined by the hardware. */
struct i386_hw_tss {
unsigned short back_link,__blh;
unsigned long esp0;
unsigned long sp0;
unsigned short ss0,__ss0h;
unsigned long esp1;
unsigned long sp1;
unsigned short ss1,__ss1h; /* ss1 is used to cache MSR_IA32_SYSENTER_CS */
unsigned long esp2;
unsigned long sp2;
unsigned short ss2,__ss2h;
unsigned long __cr3;
unsigned long eip;
unsigned long eflags;
unsigned long eax,ecx,edx,ebx;
unsigned long esp;
unsigned long ebp;
unsigned long esi;
unsigned long edi;
unsigned long ip;
unsigned long flags;
unsigned long ax, cx, dx, bx;
unsigned long sp, bp, si, di;
unsigned short es, __esh;
unsigned short cs, __csh;
unsigned short ss, __ssh;
@ -346,10 +343,10 @@ struct tss_struct {
struct thread_struct {
/* cached TLS descriptors. */
struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
unsigned long esp0;
unsigned long sp0;
unsigned long sysenter_cs;
unsigned long eip;
unsigned long esp;
unsigned long ip;
unsigned long sp;
unsigned long fs;
unsigned long gs;
/* Hardware debugging registers */
@ -366,7 +363,7 @@ struct thread_struct {
/* virtual 86 mode info */
struct vm86_struct __user * vm86_info;
unsigned long screen_bitmap;
unsigned long v86flags, v86mask, saved_esp0;
unsigned long v86flags, v86mask, saved_sp0;
unsigned int saved_fs, saved_gs;
/* IO permissions */
unsigned long *io_bitmap_ptr;
@ -378,7 +375,7 @@ struct thread_struct {
};
#define INIT_THREAD { \
.esp0 = sizeof(init_stack) + (long)&init_stack, \
.sp0 = sizeof(init_stack) + (long)&init_stack, \
.vm86_info = NULL, \
.sysenter_cs = __KERNEL_CS, \
.io_bitmap_ptr = NULL, \
@ -393,7 +390,7 @@ struct thread_struct {
*/
#define INIT_TSS { \
.x86_tss = { \
.esp0 = sizeof(init_stack) + (long)&init_stack, \
.sp0 = sizeof(init_stack) + (long)&init_stack, \
.ss0 = __KERNEL_DS, \
.ss1 = __KERNEL_CS, \
.io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \
@ -503,9 +500,9 @@ static inline void rep_nop(void)
#define cpu_relax() rep_nop()
static inline void native_load_esp0(struct tss_struct *tss, struct thread_struct *thread)
static inline void native_load_sp0(struct tss_struct *tss, struct thread_struct *thread)
{
tss->x86_tss.esp0 = thread->esp0;
tss->x86_tss.sp0 = thread->sp0;
/* This can only happen when SEP is enabled, no need to test "SEP"arately */
if (unlikely(tss->x86_tss.ss1 != thread->sysenter_cs)) {
tss->x86_tss.ss1 = thread->sysenter_cs;
@ -585,9 +582,9 @@ static inline void native_set_iopl_mask(unsigned mask)
#define paravirt_enabled() 0
#define __cpuid native_cpuid
static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread)
static inline void load_sp0(struct tss_struct *tss, struct thread_struct *thread)
{
native_load_esp0(tss, thread);
native_load_sp0(tss, thread);
}
/*

20
include/asm-x86/processor_64.h
View File

@ -177,9 +177,9 @@ union i387_union {
struct tss_struct {
u32 reserved1;
u64 rsp0;
u64 rsp1;
u64 rsp2;
u64 sp0;
u64 sp1;
u64 sp2;
u64 reserved2;
u64 ist[7];
u32 reserved3;
@ -216,9 +216,9 @@ DECLARE_PER_CPU(struct orig_ist, orig_ist);
#endif
struct thread_struct {
unsigned long rsp0;
unsigned long rsp;
unsigned long userrsp; /* Copy from PDA */
unsigned long sp0;
unsigned long sp;
unsigned long usersp; /* Copy from PDA */
unsigned long fs;
unsigned long gs;
unsigned short es, ds, fsindex, gsindex;
@ -245,11 +245,11 @@ struct thread_struct {
} __attribute__((aligned(16)));
#define INIT_THREAD { \
.rsp0 = (unsigned long)&init_stack + sizeof(init_stack) \
.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
}
#define INIT_TSS { \
.rsp0 = (unsigned long)&init_stack + sizeof(init_stack) \
.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
}
#define INIT_MMAP \
@ -293,10 +293,10 @@ extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
* Return saved PC of a blocked thread.
* What is this good for? it will be always the scheduler or ret_from_fork.
*/
#define thread_saved_pc(t) (*(unsigned long *)((t)->thread.rsp - 8))
#define thread_saved_pc(t) (*(unsigned long *)((t)->thread.sp - 8))
extern unsigned long get_wchan(struct task_struct *p);
#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.rsp0 - 1)
#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.sp0 - 1)
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->ip)
#define KSTK_ESP(tsk) -1 /* sorry. doesn't work for syscall. */

4
include/asm-x86/system_32.h
View File

@ -28,9 +28,9 @@ extern struct task_struct * FASTCALL(__switch_to(struct task_struct *prev, struc
"1:\t" \
"popl %%ebp\n\t" \
"popfl" \
:"=m" (prev->thread.esp),"=m" (prev->thread.eip), \
:"=m" (prev->thread.sp),"=m" (prev->thread.ip), \
"=a" (last),"=S" (esi),"=D" (edi) \
:"m" (next->thread.esp),"m" (next->thread.eip), \
:"m" (next->thread.sp),"m" (next->thread.ip), \
"2" (prev), "d" (next)); \
} while (0)

2
include/asm-x86/system_64.h
View File

@ -40,7 +40,7 @@
RESTORE_CONTEXT \
: "=a" (last) \
: [next] "S" (next), [prev] "D" (prev), \
[threadrsp] "i" (offsetof(struct task_struct, thread.rsp)), \
[threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \
[ti_flags] "i" (offsetof(struct thread_info, flags)),\
[tif_fork] "i" (TIF_FORK), \
[thread_info] "i" (offsetof(struct task_struct, stack)), \