Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
241 | 98.77% | 2 | 50.00% | |
2 | 0.82% | 1 | 25.00% | |
1 | 0.41% | 1 | 25.00% | |
Total | 244 | 4 |
Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Richard Kuo | 241 | 98.77% | 2 | 50.00% |
Thomas Gleixner | 2 | 0.82% | 1 | 25.00% |
Kees Cook | 1 | 0.41% | 1 | 25.00% |
Total | 244 | 4 |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Process/processor support for the Hexagon architecture * * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved. */ #ifndef _ASM_PROCESSOR_H #define _ASM_PROCESSOR_H #ifndef __ASSEMBLY__ #include <asm/mem-layout.h> #include <asm/registers.h> #include <asm/hexagon_vm.h> /* task_struct, defined elsewhere, is the "process descriptor" */ struct task_struct; extern void start_thread(struct pt_regs *, unsigned long, unsigned long); /* * thread_struct is supposed to be for context switch data. * Specifically, to hold the state necessary to perform switch_to... */ struct thread_struct { void *switch_sp; }; /* * initializes thread_struct * The only thing we have in there is switch_sp * which doesn't really need to be initialized. */ #define INIT_THREAD { \ } #define cpu_relax() __vmyield() /* * Decides where the kernel will search for a free chunk of vm space during * mmaps. * See also arch_get_unmapped_area. * Doesn't affect if you have MAX_FIXED in the page flags set though... * * Apparently the convention is that ld.so will ask for "unmapped" private * memory to be allocated SOMEWHERE, but it also asks for memory explicitly * via MAP_FIXED at the lower * addresses starting at VA=0x0. * * If the two requests collide, you get authentic segfaulting action, so * you have to kick the "unmapped" base requests higher up. */ #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE/3)) #define task_pt_regs(task) \ ((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE) - 1) #define KSTK_EIP(tsk) (pt_elr(task_pt_regs(tsk))) #define KSTK_ESP(tsk) (pt_psp(task_pt_regs(tsk))) extern unsigned long __get_wchan(struct task_struct *p); /* The following stuff is pretty HEXAGON specific. */ /* This is really just here for __switch_to. Offsets are pulled via asm-offsets.c */ /* * No real reason why VM and native switch stacks should be different. * Ultimately this should merge. Note that Rev C. ABI called out only * R24-27 as callee saved GPRs needing explicit attention (R29-31 being * dealt with automagically by allocframe), but the current ABI has * more, R16-R27. By saving more, the worst case is that we waste some * cycles if building with the old compilers. */ struct hexagon_switch_stack { union { struct { unsigned long r16; unsigned long r17; }; unsigned long long r1716; }; union { struct { unsigned long r18; unsigned long r19; }; unsigned long long r1918; }; union { struct { unsigned long r20; unsigned long r21; }; unsigned long long r2120; }; union { struct { unsigned long r22; unsigned long r23; }; unsigned long long r2322; }; union { struct { unsigned long r24; unsigned long r25; }; unsigned long long r2524; }; union { struct { unsigned long r26; unsigned long r27; }; unsigned long long r2726; }; unsigned long fp; unsigned long lr; }; #endif /* !__ASSEMBLY__ */ #endif