search for: popfl

...ile (0) -/* interrupt control.. */ -#define local_save_flags(x) do { typecheck(unsigned long,x); __asm__ __volatile__("pushfl ; popl %0":"=g" (x): /* no input */); } while (0) -#define local_irq_restore(x) do { typecheck(unsigned long,x); __asm__ __volatile__("pushl %0 ; popfl": /* no output */ :"g" (x):"memory", "cc"); } while (0) -#define local_irq_disable() __asm__ __volatile__("cli": : :"memory") -#define local_irq_enable() __asm__ __volatile__("sti": : :"memory") -/* used in the idle loop; s...

...ile (0) -/* interrupt control.. */ -#define local_save_flags(x) do { typecheck(unsigned long,x); __asm__ __volatile__("pushfl ; popl %0":"=g" (x): /* no input */); } while (0) -#define local_irq_restore(x) do { typecheck(unsigned long,x); __asm__ __volatile__("pushl %0 ; popfl": /* no output */ :"g" (x):"memory", "cc"); } while (0) -#define local_irq_disable() __asm__ __volatile__("cli": : :"memory") -#define local_irq_enable() __asm__ __volatile__("sti": : :"memory") -/* used in the idle loop; s...

I am new to the LLVM backends, I am wondering how instruction selection is done in LLVM backends, I looked at the .td files in Target/X86, they all seem to be small and do not deal with common X86 instructions, i.e. mov, push, pop, etc. Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL:

...; popl %0" - : "=g" (flags) - : /* no input */ - ); - - return flags; -} - #define raw_local_save_flags(flags) \ do { (flags) = __raw_local_save_flags(); } while (0) - -static inline void raw_local_irq_restore(unsigned long flags) -{ - __asm__ __volatile__( - "pushl %0 ; popfl" - : /* no output */ - :"g" (flags) - :"memory", "cc" - ); -} - -static inline void raw_local_irq_disable(void) -{ - __asm__ __volatile__("cli" : : : "memory"); -} - -static inline void raw_local_irq_enable(void) -{ - __asm__ __volatile__(&q...

...; popl %0" - : "=g" (flags) - : /* no input */ - ); - - return flags; -} - #define raw_local_save_flags(flags) \ do { (flags) = __raw_local_save_flags(); } while (0) - -static inline void raw_local_irq_restore(unsigned long flags) -{ - __asm__ __volatile__( - "pushl %0 ; popfl" - : /* no output */ - :"g" (flags) - :"memory", "cc" - ); -} - -static inline void raw_local_irq_disable(void) -{ - __asm__ __volatile__("cli" : : : "memory"); -} - -static inline void raw_local_irq_enable(void) -{ - __asm__ __volatile__(&q...

...bits in EFLAGS from given mask - */ -static inline void set_iopl_mask(unsigned mask) -{ - unsigned int reg; - __asm__ __volatile__ ("pushfl;" - "popl %0;" - "andl %1, %0;" - "orl %2, %0;" - "pushl %0;" - "popfl" - : "=&r" (reg) - : "i" (~X86_EFLAGS_IOPL), "r" (mask)); -} - /* Forward declaration, a strange C thing */ struct task_struct; struct mm_struct; @@ -740,4 +643,8 @@ extern void mcheck_init(struct cpuinfo_x #define mcheck_init(c) do {} while(0) #end...

...bits in EFLAGS from given mask - */ -static inline void set_iopl_mask(unsigned mask) -{ - unsigned int reg; - __asm__ __volatile__ ("pushfl;" - "popl %0;" - "andl %1, %0;" - "orl %2, %0;" - "pushl %0;" - "popfl" - : "=&r" (reg) - : "i" (~X86_EFLAGS_IOPL), "r" (mask)); -} - /* Forward declaration, a strange C thing */ struct task_struct; struct mm_struct; @@ -740,4 +643,8 @@ extern void mcheck_init(struct cpuinfo_x #define mcheck_init(c) do {} while(0) #end...

...bits in EFLAGS from given mask + */ +static inline void set_iopl_mask(unsigned mask) +{ + unsigned int reg; + __asm__ __volatile__ ("pushfl;" + "popl %0;" + "andl %1, %0;" + "orl %2, %0;" + "pushl %0;" + "popfl" + : "=&r" (reg) + : "i" (~X86_EFLAGS_IOPL), "r" (mask)); +} +#endif /* CONFIG_PARAVIRT */ /* * Generic CPUID function @@ -508,33 +539,6 @@ static inline void load_esp0(struct tss_ regs->esp = new_esp; \ } while (0) -/* - * These special...

...bits in EFLAGS from given mask + */ +static inline void set_iopl_mask(unsigned mask) +{ + unsigned int reg; + __asm__ __volatile__ ("pushfl;" + "popl %0;" + "andl %1, %0;" + "orl %2, %0;" + "pushl %0;" + "popfl" + : "=&r" (reg) + : "i" (~X86_EFLAGS_IOPL), "r" (mask)); +} +#endif /* CONFIG_PARAVIRT */ /* * Generic CPUID function @@ -508,33 +539,6 @@ static inline void load_esp0(struct tss_ regs->esp = new_esp; \ } while (0) -/* - * These special...

...cpu/common.c 2005-11-04 17:45:05.000000000 -0800 +++ linux-2.6.14-zach-work/arch/i386/kernel/cpu/common.c 2005-11-05 00:28:08.000000000 -0800 @@ -617,11 +617,6 @@ void __devinit cpu_init(void) load_idt(&idt_descr); /* - * Delete NT - */ - __asm__("pushfl ; andl $0xffffbfff,(%esp) ; popfl"); - - /* * Set up and load the per-CPU TSS and LDT */ atomic_inc(&init_mm.mm_count);

...cpu/common.c 2005-11-04 17:45:05.000000000 -0800 +++ linux-2.6.14-zach-work/arch/i386/kernel/cpu/common.c 2005-11-05 00:28:08.000000000 -0800 @@ -617,11 +617,6 @@ void __devinit cpu_init(void) load_idt(&idt_descr); /* - * Delete NT - */ - __asm__("pushfl ; andl $0xffffbfff,(%esp) ; popfl"); - - /* * Set up and load the per-CPU TSS and LDT */ atomic_inc(&init_mm.mm_count);

...rom given mask - */ -static fastcall inline void native_set_iopl_mask(unsigned mask) -{ - unsigned int reg; - __asm__ __volatile__ ("pushfl;" - "popl %0;" - "andl %1, %0;" - "orl %2, %0;" - "pushl %0;" - "popfl" - : "=&r" (reg) - : "i" (~X86_EFLAGS_IOPL), "r" (mask)); -} - /* Forward declaration, a strange C thing */ struct task_struct; struct mm_struct; @@ -651,6 +548,105 @@ static inline void rep_nop(void) #define cpu_relax() rep_nop() +#ifdef CONFIG_...

...rom given mask - */ -static fastcall inline void native_set_iopl_mask(unsigned mask) -{ - unsigned int reg; - __asm__ __volatile__ ("pushfl;" - "popl %0;" - "andl %1, %0;" - "orl %2, %0;" - "pushl %0;" - "popfl" - : "=&r" (reg) - : "i" (~X86_EFLAGS_IOPL), "r" (mask)); -} - /* Forward declaration, a strange C thing */ struct task_struct; struct mm_struct; @@ -651,6 +548,105 @@ static inline void rep_nop(void) #define cpu_relax() rep_nop() +#ifdef CONFIG_...

Hi all, I've been looking at finding common ground between the VMI, Xen and other paravirtualization approaches, and after some discussion, we're getting somewhere. These first two patches are the fundamentals, stolen mainly from the VMI patches: removing assumptions about the kernel running in ring 0, and macro-izing all the obvious para-virtualize-needing insns. The third patch is

Hi all, I've been looking at finding common ground between the VMI, Xen and other paravirtualization approaches, and after some discussion, we're getting somewhere. These first two patches are the fundamentals, stolen mainly from the VMI patches: removing assumptions about the kernel running in ring 0, and macro-izing all the obvious para-virtualize-needing insns. The third patch is

...atic fastcall unsigned long nopara_save_fl_irq_disable(void) +{ + unsigned long f; + __asm__ __volatile__("pushfl ; popl %0; cli":"=g" (f): : "memory"); + return f; +} + +static fastcall void nopara_restore_fl(unsigned long f) +{ + __asm__ __volatile__("pushl %0 ; popfl": /* no output */ + :"g" (f) + :"memory", "cc"); +} + +static fastcall void nopara_irq_disable(void) +{ + __asm__ __volatile__("cli": : :"memory"); +} + +static fastcall void nopara_irq_enable(void) +{ + __asm__ __volatile__(&quot...

...USER_SEL + call do_set_segment_base + +1: + # MSR restore + WRMSR(MSR_FS_BASE, saved_fs_base) + WRMSR(MSR_GS_BASE, saved_gs_base) + WRMSR(MSR_SHADOW_GS_BASE, saved_kernel_gs_base) + +#else /* !defined(__x86_64__) */ + + pushl SAVED_GREG(flags) + popfl + + /* No reload to fs/gs, which is saved in bottom stack already */ + mov REF(saved_ds), %ds + mov REF(saved_es), %es + +#endif + + call restore_rest_processor_state + + LOAD_GREG(bp) + LOAD_GREG(ax) + LOAD_GREG(bx) + LOAD_GREG(cx) +...

..." + "pushfl \n\t" + "popl %0 \n\t" + "movl %0,%1 \n\t" + "xorl $0x200000,%0 \n\t" + "pushl %0 \n\t" + "popfl \n\t" + "pushfl \n\t" + "popl %0 \n\t" + "popfl" + : "=r" (eax), + "=r" (ebx) + : + : "cc"); +...

...avirt.h> #include <asm/desc.h> #include <asm/setup.h> +#include <asm/delay.h> = static fastcall void native_cpuid(unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx) @@ -328,6 +329,11 @@ static fastcall void native_set_iopl_mas "popfl" : "=3D&r" (reg) : "i" (~X86_EFLAGS_IOPL), "r" (mask)); +} + +static fastcall void native_io_delay(void) +{ + asm volatile("outb %al,$0x80"); } = /* These are in entry.S */ @@ -445,6 +451,9 @@ struct paravirt_ops paravirt_ops =3...

...avirt.h> #include <asm/desc.h> #include <asm/setup.h> +#include <asm/delay.h> = static fastcall void native_cpuid(unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx) @@ -328,6 +329,11 @@ static fastcall void native_set_iopl_mas "popfl" : "=3D&r" (reg) : "i" (~X86_EFLAGS_IOPL), "r" (mask)); +} + +static fastcall void native_io_delay(void) +{ + asm volatile("outb %al,$0x80"); } = /* These are in entry.S */ @@ -445,6 +451,9 @@ struct paravirt_ops paravirt_ops =3...