cb38d37733
The thread_struct is not fundamentally different between architectures, and this patch puts it in the common header. What's really unique for each of them is enclosed in ifdefs. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
222 lines
5.9 KiB
C
222 lines
5.9 KiB
C
/*
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* Copyright (C) 1994 Linus Torvalds
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*/
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#ifndef __ASM_X86_64_PROCESSOR_H
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#define __ASM_X86_64_PROCESSOR_H
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#include <asm/segment.h>
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#include <asm/page.h>
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#include <asm/types.h>
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#include <asm/sigcontext.h>
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#include <asm/cpufeature.h>
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#include <linux/threads.h>
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#include <asm/msr.h>
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#include <asm/current.h>
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#include <asm/system.h>
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#include <asm/mmsegment.h>
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#include <asm/percpu.h>
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#include <linux/personality.h>
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#include <linux/cpumask.h>
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#include <asm/desc_defs.h>
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/*
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* CPU type and hardware bug flags. Kept separately for each CPU.
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*/
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struct cpuinfo_x86 {
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__u8 x86; /* CPU family */
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__u8 x86_vendor; /* CPU vendor */
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__u8 x86_model;
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__u8 x86_mask;
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int cpuid_level; /* Maximum supported CPUID level, -1=no CPUID */
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__u32 x86_capability[NCAPINTS];
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char x86_vendor_id[16];
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char x86_model_id[64];
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int x86_cache_size; /* in KB */
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int x86_clflush_size;
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int x86_cache_alignment;
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int x86_tlbsize; /* number of 4K pages in DTLB/ITLB combined(in pages)*/
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__u8 x86_virt_bits, x86_phys_bits;
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__u8 x86_max_cores; /* cpuid returned max cores value */
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__u8 x86_coreid_bits; /* cpuid returned core id bits */
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__u32 x86_power;
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__u32 extended_cpuid_level; /* Max extended CPUID function supported */
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unsigned long loops_per_jiffy;
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#ifdef CONFIG_SMP
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cpumask_t llc_shared_map; /* cpus sharing the last level cache */
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#endif
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__u8 apicid;
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#ifdef CONFIG_SMP
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__u8 booted_cores; /* number of cores as seen by OS */
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__u8 phys_proc_id; /* Physical Processor id. */
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__u8 cpu_core_id; /* Core id. */
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__u8 cpu_index; /* index into per_cpu list */
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#endif
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} ____cacheline_aligned;
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#define X86_VENDOR_INTEL 0
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#define X86_VENDOR_CYRIX 1
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#define X86_VENDOR_AMD 2
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#define X86_VENDOR_UMC 3
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#define X86_VENDOR_NEXGEN 4
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#define X86_VENDOR_CENTAUR 5
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#define X86_VENDOR_TRANSMETA 7
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#define X86_VENDOR_NUM 8
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#define X86_VENDOR_UNKNOWN 0xff
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#ifdef CONFIG_SMP
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DECLARE_PER_CPU(struct cpuinfo_x86, cpu_info);
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#define cpu_data(cpu) per_cpu(cpu_info, cpu)
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#define current_cpu_data cpu_data(smp_processor_id())
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#else
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#define cpu_data(cpu) boot_cpu_data
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#define current_cpu_data boot_cpu_data
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#endif
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extern char ignore_irq13;
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extern void identify_cpu(struct cpuinfo_x86 *);
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/*
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* User space process size. 47bits minus one guard page.
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*/
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#define TASK_SIZE64 (0x800000000000UL - 4096)
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/* This decides where the kernel will search for a free chunk of vm
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* space during mmap's.
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*/
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#define IA32_PAGE_OFFSET ((current->personality & ADDR_LIMIT_3GB) ? 0xc0000000 : 0xFFFFe000)
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#define TASK_SIZE (test_thread_flag(TIF_IA32) ? IA32_PAGE_OFFSET : TASK_SIZE64)
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#define TASK_SIZE_OF(child) ((test_tsk_thread_flag(child, TIF_IA32)) ? IA32_PAGE_OFFSET : TASK_SIZE64)
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struct i387_fxsave_struct {
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u16 cwd;
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u16 swd;
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u16 twd;
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u16 fop;
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u64 rip;
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u64 rdp;
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u32 mxcsr;
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u32 mxcsr_mask;
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u32 st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
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u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg = 256 bytes */
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u32 padding[24];
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} __attribute__ ((aligned (16)));
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union i387_union {
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struct i387_fxsave_struct fxsave;
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};
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extern struct cpuinfo_x86 boot_cpu_data;
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/* Save the original ist values for checking stack pointers during debugging */
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struct orig_ist {
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unsigned long ist[7];
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};
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DECLARE_PER_CPU(struct orig_ist, orig_ist);
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#ifdef CONFIG_X86_VSMP
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#define ARCH_MIN_TASKALIGN (1 << INTERNODE_CACHE_SHIFT)
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#define ARCH_MIN_MMSTRUCT_ALIGN (1 << INTERNODE_CACHE_SHIFT)
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#else
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#define ARCH_MIN_TASKALIGN 16
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#define ARCH_MIN_MMSTRUCT_ALIGN 0
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#endif
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#define INIT_THREAD { \
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.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
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}
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#define INIT_TSS { \
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.x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
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}
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#define INIT_MMAP \
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{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }
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#define start_thread(regs,new_rip,new_rsp) do { \
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asm volatile("movl %0,%%fs; movl %0,%%es; movl %0,%%ds": :"r" (0)); \
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load_gs_index(0); \
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(regs)->ip = (new_rip); \
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(regs)->sp = (new_rsp); \
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write_pda(oldrsp, (new_rsp)); \
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(regs)->cs = __USER_CS; \
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(regs)->ss = __USER_DS; \
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(regs)->flags = 0x200; \
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set_fs(USER_DS); \
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} while(0)
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/*
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* Return saved PC of a blocked thread.
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* What is this good for? it will be always the scheduler or ret_from_fork.
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*/
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#define thread_saved_pc(t) (*(unsigned long *)((t)->thread.sp - 8))
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#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.sp0 - 1)
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#define KSTK_ESP(tsk) -1 /* sorry. doesn't work for syscall. */
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#if defined(CONFIG_MPSC) || defined(CONFIG_MCORE2)
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#define ASM_NOP1 P6_NOP1
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#define ASM_NOP2 P6_NOP2
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#define ASM_NOP3 P6_NOP3
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#define ASM_NOP4 P6_NOP4
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#define ASM_NOP5 P6_NOP5
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#define ASM_NOP6 P6_NOP6
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#define ASM_NOP7 P6_NOP7
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#define ASM_NOP8 P6_NOP8
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#else
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#define ASM_NOP1 K8_NOP1
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#define ASM_NOP2 K8_NOP2
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#define ASM_NOP3 K8_NOP3
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#define ASM_NOP4 K8_NOP4
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#define ASM_NOP5 K8_NOP5
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#define ASM_NOP6 K8_NOP6
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#define ASM_NOP7 K8_NOP7
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#define ASM_NOP8 K8_NOP8
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#endif
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/* Opteron nops */
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#define K8_NOP1 ".byte 0x90\n"
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#define K8_NOP2 ".byte 0x66,0x90\n"
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#define K8_NOP3 ".byte 0x66,0x66,0x90\n"
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#define K8_NOP4 ".byte 0x66,0x66,0x66,0x90\n"
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#define K8_NOP5 K8_NOP3 K8_NOP2
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#define K8_NOP6 K8_NOP3 K8_NOP3
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#define K8_NOP7 K8_NOP4 K8_NOP3
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#define K8_NOP8 K8_NOP4 K8_NOP4
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/* P6 nops */
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/* uses eax dependencies (Intel-recommended choice) */
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#define P6_NOP1 ".byte 0x90\n"
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#define P6_NOP2 ".byte 0x66,0x90\n"
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#define P6_NOP3 ".byte 0x0f,0x1f,0x00\n"
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#define P6_NOP4 ".byte 0x0f,0x1f,0x40,0\n"
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#define P6_NOP5 ".byte 0x0f,0x1f,0x44,0x00,0\n"
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#define P6_NOP6 ".byte 0x66,0x0f,0x1f,0x44,0x00,0\n"
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#define P6_NOP7 ".byte 0x0f,0x1f,0x80,0,0,0,0\n"
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#define P6_NOP8 ".byte 0x0f,0x1f,0x84,0x00,0,0,0,0\n"
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#define ASM_NOP_MAX 8
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static inline void prefetchw(void *x)
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{
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alternative_input("prefetcht0 (%1)",
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"prefetchw (%1)",
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X86_FEATURE_3DNOW,
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"r" (x));
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}
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#define stack_current() \
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({ \
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struct thread_info *ti; \
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asm("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
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ti->task; \
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})
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#endif /* __ASM_X86_64_PROCESSOR_H */
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