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MFi386: revision 1.579.

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This commit is contained in:
Yoshihiro Takahashi 2003-10-31 14:54:33 +00:00
parent b62911f8dd
commit b84a41b421
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=121804
2 changed files with 20 additions and 28 deletions
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24
sys/pc98/i386/machdep.c
View File

@ -2220,14 +2220,12 @@ cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
#if defined(I586_CPU) && !defined(NO_F00F_HACK)
static void f00f_hack(void *unused);
SYSINIT(f00f_hack, SI_SUB_INTRINSIC, SI_ORDER_FIRST, f00f_hack, NULL);
SYSINIT(f00f_hack, SI_SUB_INTRINSIC, SI_ORDER_FIRST, f00f_hack, NULL)
static void
f00f_hack(void *unused) {
f00f_hack(void *unused)
{
struct gate_descriptor *new_idt;
#ifndef SMP
struct region_descriptor r_idt;
#endif
vm_offset_t tmp;
if (!has_f00f_bug)
@ -2237,29 +2235,27 @@ f00f_hack(void *unused) {
printf("Intel Pentium detected, installing workaround for F00F bug\n");
r_idt.rd_limit = sizeof(idt0) - 1;
tmp = kmem_alloc(kernel_map, PAGE_SIZE * 2);
if (tmp == 0)
panic("kmem_alloc returned 0");
if (((unsigned int)tmp & (PAGE_SIZE-1)) != 0)
panic("kmem_alloc returned non-page-aligned memory");
/* Put the first seven entries in the lower page */
new_idt = (struct gate_descriptor*)(tmp + PAGE_SIZE - (7*8));
/* Put the problematic entry (#6) at the end of the lower page. */
new_idt = (struct gate_descriptor*)
(tmp + PAGE_SIZE - 7 * sizeof(struct gate_descriptor));
bcopy(idt, new_idt, sizeof(idt0));
r_idt.rd_base = (int)new_idt;
r_idt.rd_base = (u_int)new_idt;
lidt(&r_idt);
idt = new_idt;
if (vm_map_protect(kernel_map, tmp, tmp + PAGE_SIZE,
VM_PROT_READ, FALSE) != KERN_SUCCESS)
panic("vm_map_protect failed");
return;
}
#endif /* defined(I586_CPU) && !NO_F00F_HACK */
int
ptrace_set_pc(struct thread *td, unsigned long addr)
ptrace_set_pc(struct thread *td, u_long addr)
{
td->td_frame->tf_eip = addr;
return (0);
}

24
sys/pc98/pc98/machdep.c
View File

@ -2220,14 +2220,12 @@ cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
#if defined(I586_CPU) && !defined(NO_F00F_HACK)
static void f00f_hack(void *unused);
SYSINIT(f00f_hack, SI_SUB_INTRINSIC, SI_ORDER_FIRST, f00f_hack, NULL);
SYSINIT(f00f_hack, SI_SUB_INTRINSIC, SI_ORDER_FIRST, f00f_hack, NULL)
static void
f00f_hack(void *unused) {
f00f_hack(void *unused)
{
struct gate_descriptor *new_idt;
#ifndef SMP
struct region_descriptor r_idt;
#endif
vm_offset_t tmp;
if (!has_f00f_bug)
@ -2237,29 +2235,27 @@ f00f_hack(void *unused) {
printf("Intel Pentium detected, installing workaround for F00F bug\n");
r_idt.rd_limit = sizeof(idt0) - 1;
tmp = kmem_alloc(kernel_map, PAGE_SIZE * 2);
if (tmp == 0)
panic("kmem_alloc returned 0");
if (((unsigned int)tmp & (PAGE_SIZE-1)) != 0)
panic("kmem_alloc returned non-page-aligned memory");
/* Put the first seven entries in the lower page */
new_idt = (struct gate_descriptor*)(tmp + PAGE_SIZE - (7*8));
/* Put the problematic entry (#6) at the end of the lower page. */
new_idt = (struct gate_descriptor*)
(tmp + PAGE_SIZE - 7 * sizeof(struct gate_descriptor));
bcopy(idt, new_idt, sizeof(idt0));
r_idt.rd_base = (int)new_idt;
r_idt.rd_base = (u_int)new_idt;
lidt(&r_idt);
idt = new_idt;
if (vm_map_protect(kernel_map, tmp, tmp + PAGE_SIZE,
VM_PROT_READ, FALSE) != KERN_SUCCESS)
panic("vm_map_protect failed");
return;
}
#endif /* defined(I586_CPU) && !NO_F00F_HACK */
int
ptrace_set_pc(struct thread *td, unsigned long addr)
ptrace_set_pc(struct thread *td, u_long addr)
{
td->td_frame->tf_eip = addr;
return (0);
}