diff options
Diffstat (limited to 'include/asm-parisc/processor.h')
| -rw-r--r-- | include/asm-parisc/processor.h | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/include/asm-parisc/processor.h b/include/asm-parisc/processor.h deleted file mode 100644 index 3c9d34844c83..000000000000 --- a/include/asm-parisc/processor.h +++ /dev/null @@ -1,357 +0,0 @@ -/* - * include/asm-parisc/processor.h - * - * Copyright (C) 1994 Linus Torvalds - * Copyright (C) 2001 Grant Grundler - */ - -#ifndef __ASM_PARISC_PROCESSOR_H -#define __ASM_PARISC_PROCESSOR_H - -#ifndef __ASSEMBLY__ -#include <linux/threads.h> - -#include <asm/prefetch.h> -#include <asm/hardware.h> -#include <asm/pdc.h> -#include <asm/ptrace.h> -#include <asm/types.h> -#include <asm/system.h> -#endif /* __ASSEMBLY__ */ - -#define KERNEL_STACK_SIZE (4*PAGE_SIZE) - -/* - * Default implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#ifdef CONFIG_PA20 -#define current_ia(x) __asm__("mfia %0" : "=r"(x)) -#else /* mfia added in pa2.0 */ -#define current_ia(x) __asm__("blr 0,%0\n\tnop" : "=r"(x)) -#endif -#define current_text_addr() ({ void *pc; current_ia(pc); pc; }) - -#define TASK_SIZE_OF(tsk) ((tsk)->thread.task_size) -#define TASK_SIZE TASK_SIZE_OF(current) -#define TASK_UNMAPPED_BASE (current->thread.map_base) - -#define DEFAULT_TASK_SIZE32 (0xFFF00000UL) -#define DEFAULT_MAP_BASE32 (0x40000000UL) - -#ifdef CONFIG_64BIT -#define DEFAULT_TASK_SIZE (MAX_ADDRESS-0xf000000) -#define DEFAULT_MAP_BASE (0x200000000UL) -#else -#define DEFAULT_TASK_SIZE DEFAULT_TASK_SIZE32 -#define DEFAULT_MAP_BASE DEFAULT_MAP_BASE32 -#endif - -#ifdef __KERNEL__ - -/* XXX: STACK_TOP actually should be STACK_BOTTOM for parisc. - * prumpf */ - -#define STACK_TOP TASK_SIZE -#define STACK_TOP_MAX DEFAULT_TASK_SIZE - -#endif - -#ifndef __ASSEMBLY__ - -/* - * Data detected about CPUs at boot time which is the same for all CPU's. - * HP boxes are SMP - ie identical processors. - * - * FIXME: some CPU rev info may be processor specific... - */ -struct system_cpuinfo_parisc { - unsigned int cpu_count; - unsigned int cpu_hz; - unsigned int hversion; - unsigned int sversion; - enum cpu_type cpu_type; - - struct { - struct pdc_model model; - unsigned long versions; - unsigned long cpuid; - unsigned long capabilities; - char sys_model_name[81]; /* PDC-ROM returnes this model name */ - } pdc; - - const char *cpu_name; /* e.g. "PA7300LC (PCX-L2)" */ - const char *family_name; /* e.g. "1.1e" */ -}; - - -/* Per CPU data structure - ie varies per CPU. */ -struct cpuinfo_parisc { - unsigned long it_value; /* Interval Timer at last timer Intr */ - unsigned long it_delta; /* Interval delta (tic_10ms / HZ * 100) */ - unsigned long irq_count; /* number of IRQ's since boot */ - unsigned long irq_max_cr16; /* longest time to handle a single IRQ */ - unsigned long cpuid; /* aka slot_number or set to NO_PROC_ID */ - unsigned long hpa; /* Host Physical address */ - unsigned long txn_addr; /* MMIO addr of EIR or id_eid */ -#ifdef CONFIG_SMP - unsigned long pending_ipi; /* bitmap of type ipi_message_type */ - unsigned long ipi_count; /* number ipi Interrupts */ -#endif - unsigned long bh_count; /* number of times bh was invoked */ - unsigned long prof_counter; /* per CPU profiling support */ - unsigned long prof_multiplier; /* per CPU profiling support */ - unsigned long fp_rev; - unsigned long fp_model; - unsigned int state; - struct parisc_device *dev; - unsigned long loops_per_jiffy; -}; - -extern struct system_cpuinfo_parisc boot_cpu_data; -extern struct cpuinfo_parisc cpu_data[NR_CPUS]; -#define current_cpu_data cpu_data[smp_processor_id()] - -#define CPU_HVERSION ((boot_cpu_data.hversion >> 4) & 0x0FFF) - -typedef struct { - int seg; -} mm_segment_t; - -#define ARCH_MIN_TASKALIGN 8 - -struct thread_struct { - struct pt_regs regs; - unsigned long task_size; - unsigned long map_base; - unsigned long flags; -}; - -/* Thread struct flags. */ -#define PARISC_UAC_NOPRINT (1UL << 0) /* see prctl and unaligned.c */ -#define PARISC_UAC_SIGBUS (1UL << 1) -#define PARISC_KERNEL_DEATH (1UL << 31) /* see die_if_kernel()... */ - -#define PARISC_UAC_SHIFT 0 -#define PARISC_UAC_MASK (PARISC_UAC_NOPRINT|PARISC_UAC_SIGBUS) - -#define SET_UNALIGN_CTL(task,value) \ - ({ \ - (task)->thread.flags = (((task)->thread.flags & ~PARISC_UAC_MASK) \ - | (((value) << PARISC_UAC_SHIFT) & \ - PARISC_UAC_MASK)); \ - 0; \ - }) - -#define GET_UNALIGN_CTL(task,addr) \ - ({ \ - put_user(((task)->thread.flags & PARISC_UAC_MASK) \ - >> PARISC_UAC_SHIFT, (int __user *) (addr)); \ - }) - -#define INIT_THREAD { \ - .regs = { .gr = { 0, }, \ - .fr = { 0, }, \ - .sr = { 0, }, \ - .iasq = { 0, }, \ - .iaoq = { 0, }, \ - .cr27 = 0, \ - }, \ - .task_size = DEFAULT_TASK_SIZE, \ - .map_base = DEFAULT_MAP_BASE, \ - .flags = 0 \ - } - -/* - * Return saved PC of a blocked thread. This is used by ps mostly. - */ - -unsigned long thread_saved_pc(struct task_struct *t); -void show_trace(struct task_struct *task, unsigned long *stack); - -/* - * Start user thread in another space. - * - * Note that we set both the iaoq and r31 to the new pc. When - * the kernel initially calls execve it will return through an - * rfi path that will use the values in the iaoq. The execve - * syscall path will return through the gateway page, and - * that uses r31 to branch to. - * - * For ELF we clear r23, because the dynamic linker uses it to pass - * the address of the finalizer function. - * - * We also initialize sr3 to an illegal value (illegal for our - * implementation, not for the architecture). - */ -typedef unsigned int elf_caddr_t; - -#define start_thread_som(regs, new_pc, new_sp) do { \ - unsigned long *sp = (unsigned long *)new_sp; \ - __u32 spaceid = (__u32)current->mm->context; \ - unsigned long pc = (unsigned long)new_pc; \ - /* offset pc for priv. level */ \ - pc |= 3; \ - \ - set_fs(USER_DS); \ - regs->iasq[0] = spaceid; \ - regs->iasq[1] = spaceid; \ - regs->iaoq[0] = pc; \ - regs->iaoq[1] = pc + 4; \ - regs->sr[2] = LINUX_GATEWAY_SPACE; \ - regs->sr[3] = 0xffff; \ - regs->sr[4] = spaceid; \ - regs->sr[5] = spaceid; \ - regs->sr[6] = spaceid; \ - regs->sr[7] = spaceid; \ - regs->gr[ 0] = USER_PSW; \ - regs->gr[30] = ((new_sp)+63)&~63; \ - regs->gr[31] = pc; \ - \ - get_user(regs->gr[26],&sp[0]); \ - get_user(regs->gr[25],&sp[-1]); \ - get_user(regs->gr[24],&sp[-2]); \ - get_user(regs->gr[23],&sp[-3]); \ -} while(0) - -/* The ELF abi wants things done a "wee bit" differently than - * som does. Supporting this behavior here avoids - * having our own version of create_elf_tables. - * - * Oh, and yes, that is not a typo, we are really passing argc in r25 - * and argv in r24 (rather than r26 and r25). This is because that's - * where __libc_start_main wants them. - * - * Duplicated from dl-machine.h for the benefit of readers: - * - * Our initial stack layout is rather different from everyone else's - * due to the unique PA-RISC ABI. As far as I know it looks like - * this: - - ----------------------------------- (user startup code creates this frame) - | 32 bytes of magic | - |---------------------------------| - | 32 bytes argument/sp save area | - |---------------------------------| (bprm->p) - | ELF auxiliary info | - | (up to 28 words) | - |---------------------------------| - | NULL | - |---------------------------------| - | Environment pointers | - |---------------------------------| - | NULL | - |---------------------------------| - | Argument pointers | - |---------------------------------| <- argv - | argc (1 word) | - |---------------------------------| <- bprm->exec (HACK!) - | N bytes of slack | - |---------------------------------| - | filename passed to execve | - |---------------------------------| (mm->env_end) - | env strings | - |---------------------------------| (mm->env_start, mm->arg_end) - | arg strings | - |---------------------------------| - | additional faked arg strings if | - | we're invoked via binfmt_script | - |---------------------------------| (mm->arg_start) - stack base is at TASK_SIZE - rlim_max. - -on downward growing arches, it looks like this: - stack base at TASK_SIZE - | filename passed to execve - | env strings - | arg strings - | faked arg strings - | slack - | ELF - | envps - | argvs - | argc - - * The pleasant part of this is that if we need to skip arguments we - * can just decrement argc and move argv, because the stack pointer - * is utterly unrelated to the location of the environment and - * argument vectors. - * - * Note that the S/390 people took the easy way out and hacked their - * GCC to make the stack grow downwards. - * - * Final Note: For entry from syscall, the W (wide) bit of the PSW - * is stuffed into the lowest bit of the user sp (%r30), so we fill - * it in here from the current->personality - */ - -#ifdef CONFIG_64BIT -#define USER_WIDE_MODE (!test_thread_flag(TIF_32BIT)) -#else -#define USER_WIDE_MODE 0 -#endif - -#define start_thread(regs, new_pc, new_sp) do { \ - elf_addr_t *sp = (elf_addr_t *)new_sp; \ - __u32 spaceid = (__u32)current->mm->context; \ - elf_addr_t pc = (elf_addr_t)new_pc | 3; \ - elf_caddr_t *argv = (elf_caddr_t *)bprm->exec + 1; \ - \ - set_fs(USER_DS); \ - regs->iasq[0] = spaceid; \ - regs->iasq[1] = spaceid; \ - regs->iaoq[0] = pc; \ - regs->iaoq[1] = pc + 4; \ - regs->sr[2] = LINUX_GATEWAY_SPACE; \ - regs->sr[3] = 0xffff; \ - regs->sr[4] = spaceid; \ - regs->sr[5] = spaceid; \ - regs->sr[6] = spaceid; \ - regs->sr[7] = spaceid; \ - regs->gr[ 0] = USER_PSW | (USER_WIDE_MODE ? PSW_W : 0); \ - regs->fr[ 0] = 0LL; \ - regs->fr[ 1] = 0LL; \ - regs->fr[ 2] = 0LL; \ - regs->fr[ 3] = 0LL; \ - regs->gr[30] = (((unsigned long)sp + 63) &~ 63) | (USER_WIDE_MODE ? 1 : 0); \ - regs->gr[31] = pc; \ - \ - get_user(regs->gr[25], (argv - 1)); \ - regs->gr[24] = (long) argv; \ - regs->gr[23] = 0; \ -} while(0) - -struct task_struct; -struct mm_struct; - -/* Free all resources held by a thread. */ -extern void release_thread(struct task_struct *); -extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - -/* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) - -extern void map_hpux_gateway_page(struct task_struct *tsk, struct mm_struct *mm); - -extern unsigned long get_wchan(struct task_struct *p); - -#define KSTK_EIP(tsk) ((tsk)->thread.regs.iaoq[0]) -#define KSTK_ESP(tsk) ((tsk)->thread.regs.gr[30]) - -#define cpu_relax() barrier() - -/* Used as a macro to identify the combined VIPT/PIPT cached - * CPUs which require a guarantee of coherency (no inequivalent - * aliases with different data, whether clean or not) to operate */ -static inline int parisc_requires_coherency(void) -{ -#ifdef CONFIG_PA8X00 - return (boot_cpu_data.cpu_type == mako) || - (boot_cpu_data.cpu_type == mako2); -#else - return 0; -#endif -} - -#endif /* __ASSEMBLY__ */ - -#endif /* __ASM_PARISC_PROCESSOR_H */ |