/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_CRIS_ARCH_PROCESSOR_H #define __ASM_CRIS_ARCH_PROCESSOR_H /* * Default implementation of macro that returns current * instruction pointer ("program counter"). */ #define current_text_addr() ({void *pc; __asm__ ("move.d $pc,%0" : "=rm" (pc)); pc; }) /* CRIS has no problems with write protection */ #define wp_works_ok 1 /* CRIS thread_struct. this really has nothing to do with the processor itself, since * CRIS does not do any hardware task-switching, but it's here for legacy reasons. * The thread_struct here is used when task-switching using _resume defined in entry.S. * The offsets here are hardcoded into _resume - if you change this struct, you need to * change them as well!!! */ struct thread_struct { unsigned long ksp; /* kernel stack pointer */ unsigned long usp; /* user stack pointer */ unsigned long dccr; /* saved flag register */ }; /* * User space process size. This is hardcoded into a few places, * so don't change it unless you know what you are doing. */ #ifdef CONFIG_CRIS_LOW_MAP #define TASK_SIZE (0x50000000UL) /* 1.25 GB */ #else #define TASK_SIZE (0xA0000000UL) /* 2.56 GB */ #endif #define INIT_THREAD { \ 0, 0, 0x20 } /* ccr = int enable, nothing else */ #define KSTK_EIP(tsk) \ ({ \ unsigned long eip = 0; \ unsigned long regs = (unsigned long)task_pt_regs(tsk); \ if (regs > PAGE_SIZE && \ virt_addr_valid(regs)) \ eip = ((struct pt_regs *)regs)->irp; \ eip; \ }) /* give the thread a program location * set user-mode (The 'U' flag (User mode flag) is CCR/DCCR bit 8) * switch user-stackpointer */ #define start_thread(regs, ip, usp) do { \ regs->irp = ip; \ regs->dccr |= 1 << U_DCCR_BITNR; \ wrusp(usp); \ } while(0) /* Called when handling a kernel bus fault fixup. * * After a fixup we do not want to return by restoring the CPU-state * anymore, so switch frame-types (see ptrace.h) */ #define arch_fixup(regs) \ regs->frametype = CRIS_FRAME_NORMAL; #endif
Name | Type | Size | Permission | Actions |
---|---|---|---|---|
bitops.h | File | 1.81 KB | 0644 |
|
bug.h | File | 2.07 KB | 0644 |
|
cache.h | File | 219 B | 0644 |
|
checksum.h | File | 726 B | 0644 |
|
delay.h | File | 394 B | 0644 |
|
dma.h | File | 1.74 KB | 0644 |
|
io.h | File | 6.46 KB | 0644 |
|
io_interface_mux.h | File | 2.02 KB | 0644 |
|
irq.h | File | 5.95 KB | 0644 |
|
irqflags.h | File | 994 B | 0644 |
|
memmap.h | File | 680 B | 0644 |
|
mmu.h | File | 3.4 KB | 0644 |
|
offset.h | File | 1.19 KB | 0644 |
|
page.h | File | 920 B | 0644 |
|
pgtable.h | File | 324 B | 0644 |
|
processor.h | File | 2 KB | 0644 |
|
swab.h | File | 672 B | 0644 |
|
system.h | File | 809 B | 0644 |
|
thread_info.h | File | 335 B | 0644 |
|
timex.h | File | 982 B | 0644 |
|
tlb.h | File | 394 B | 0644 |
|
uaccess.h | File | 17.7 KB | 0644 |
|
unistd.h | File | 4.38 KB | 0644 |
|