diff options
Diffstat (limited to 'arch/sparc/include/asm/processor_64.h')
| -rw-r--r-- | arch/sparc/include/asm/processor_64.h | 47 |
1 files changed, 18 insertions, 29 deletions
diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h index 4c3f7f01c709..321859454ca4 100644 --- a/arch/sparc/include/asm/processor_64.h +++ b/arch/sparc/include/asm/processor_64.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * include/asm/processor.h * @@ -7,21 +8,11 @@ #ifndef __ASM_SPARC64_PROCESSOR_H #define __ASM_SPARC64_PROCESSOR_H -/* - * Sparc64 implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ void *pc; __asm__("rd %%pc, %0" : "=r" (pc)); pc; }) - #include <asm/asi.h> #include <asm/pstate.h> #include <asm/ptrace.h> #include <asm/page.h> -/* The sparc has no problems with write protection */ -#define wp_works_ok 1 -#define wp_works_ok__is_a_macro /* for versions in ksyms.c */ - /* * User lives in his very own context, and cannot reference us. Note * that TASK_SIZE is a misnomer, it really gives maximum user virtual @@ -30,7 +21,7 @@ * XXX No longer using virtual page tables, kill this upper limit... */ #define VA_BITS 44 -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ #define VPTE_SIZE (1UL << (VA_BITS - PAGE_SHIFT + 3)) #else #define VPTE_SIZE (1 << (VA_BITS - PAGE_SHIFT + 3)) @@ -54,11 +45,7 @@ #endif -#ifndef __ASSEMBLY__ - -typedef struct { - unsigned char seg; -} mm_segment_t; +#ifndef __ASSEMBLER__ /* The Sparc processor specific thread struct. */ /* XXX This should die, everything can go into thread_info now. */ @@ -75,7 +62,7 @@ struct thread_struct { #endif }; -#endif /* !(__ASSEMBLY__) */ +#endif /* !(__ASSEMBLER__) */ #ifndef CONFIG_DEBUG_SPINLOCK #define INIT_THREAD { \ @@ -88,14 +75,12 @@ struct thread_struct { } #endif /* !(CONFIG_DEBUG_SPINLOCK) */ -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ #include <linux/types.h> #include <asm/fpumacro.h> -/* Return saved PC of a blocked thread. */ struct task_struct; -extern unsigned long thread_saved_pc(struct task_struct *); /* On Uniprocessor, even in RMO processes see TSO semantics */ #ifdef CONFIG_SMP @@ -191,20 +176,24 @@ do { \ regs->tstate &= ~TSTATE_PEF; \ } while (0) -/* Free all resources held by a thread. */ -#define release_thread(tsk) do { } while (0) - -extern unsigned long get_wchan(struct task_struct *task); +unsigned long __get_wchan(struct task_struct *task); #define task_pt_regs(tsk) (task_thread_info(tsk)->kregs) #define KSTK_EIP(tsk) (task_pt_regs(tsk)->tpc) #define KSTK_ESP(tsk) (task_pt_regs(tsk)->u_regs[UREG_FP]) /* Please see the commentary in asm/backoff.h for a description of - * what these instructions are doing and how they have been choosen. + * what these instructions are doing and how they have been chosen. * To make a long story short, we are trying to yield the current cpu * strand during busy loops. */ +#ifdef BUILD_VDSO +#define cpu_relax() asm volatile("\n99:\n\t" \ + "rd %%ccr, %%g0\n\t" \ + "rd %%ccr, %%g0\n\t" \ + "rd %%ccr, %%g0\n\t" \ + ::: "memory") +#else /* ! BUILD_VDSO */ #define cpu_relax() asm volatile("\n99:\n\t" \ "rd %%ccr, %%g0\n\t" \ "rd %%ccr, %%g0\n\t" \ @@ -216,6 +205,7 @@ extern unsigned long get_wchan(struct task_struct *task); "nop\n\t" \ ".previous" \ ::: "memory") +#endif /* Prefetch support. This is tuned for UltraSPARC-III and later. * UltraSPARC-I will treat these as nops, and UltraSPARC-II has @@ -223,7 +213,6 @@ extern unsigned long get_wchan(struct task_struct *task); */ #define ARCH_HAS_PREFETCH #define ARCH_HAS_PREFETCHW -#define ARCH_HAS_SPINLOCK_PREFETCH static inline void prefetch(const void *x) { @@ -249,10 +238,10 @@ static inline void prefetchw(const void *x) : "r" (x)); } -#define spin_lock_prefetch(x) prefetchw(x) - #define HAVE_ARCH_PICK_MMAP_LAYOUT -#endif /* !(__ASSEMBLY__) */ +int do_mathemu(struct pt_regs *regs, struct fpustate *f, bool illegal_insn_trap); + +#endif /* !(__ASSEMBLER__) */ #endif /* !(__ASM_SPARC64_PROCESSOR_H) */ |