Imbus/xv6-riscv-kernel
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Style nits; indentation and tabs

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This commit is contained in:
Austin Clements 2011-08-29 16:12:01 -04:00
parent 16f205b5c9
commit a7061b4f97
5 changed files with 36 additions and 36 deletions
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2
defs.h
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@ -131,7 +131,7 @@ void release(struct spinlock*);
void pushcli(void);
void popcli(void);
void initsleeplock(struct sleeplock*);
void acquire_sleeplock(struct sleeplock*,struct spinlock*);
void acquire_sleeplock(struct sleeplock*, struct spinlock*);
void release_sleeplock(struct sleeplock*);
int acquired_sleeplock(struct sleeplock*);

2
file.c
View file

@ -134,7 +134,7 @@ filewrite(struct file *f, char *addr, int n)
begin_trans();
ilock(f->ip);
if ((r = writei(f->ip, addr + i, f->off, n1)) > 0)
f->off += r;
f->off += r;
iunlock(f->ip);
commit_trans();

8
main.c
View file

@ -107,10 +107,10 @@ startothers(void)
// Use PTE_PS in page directory entry to enable 4Mbyte pages.
__attribute__((__aligned__(PGSIZE)))
pde_t enterpgdir[NPDENTRIES] = {
// Map VA's [0, 4MB) to PA's [0, 4MB)
[0] = (0) + PTE_P + PTE_W + PTE_PS,
// Map VA's [KERNBASE, KERNBASE+4MB) to PA's [0, 4MB)
[KERNBASE>>PDXSHIFT] = (0) + PTE_P + PTE_W + PTE_PS,
// Map VA's [0, 4MB) to PA's [0, 4MB)
[0] = (0) + PTE_P + PTE_W + PTE_PS,
// Map VA's [KERNBASE, KERNBASE+4MB) to PA's [0, 4MB)
[KERNBASE>>PDXSHIFT] = (0) + PTE_P + PTE_W + PTE_PS,
};
//PAGEBREAK!

58
mmu.h
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@ -25,19 +25,19 @@
#define FL_ID 0x00200000 // ID flag
// Control Register flags
#define CR0_PE 0x00000001 // Protection Enable
#define CR0_MP 0x00000002 // Monitor coProcessor
#define CR0_EM 0x00000004 // Emulation
#define CR0_TS 0x00000008 // Task Switched
#define CR0_ET 0x00000010 // Extension Type
#define CR0_NE 0x00000020 // Numeric Errror
#define CR0_WP 0x00010000 // Write Protect
#define CR0_AM 0x00040000 // Alignment Mask
#define CR0_NW 0x20000000 // Not Writethrough
#define CR0_CD 0x40000000 // Cache Disable
#define CR0_PG 0x80000000 // Paging
#define CR0_PE 0x00000001 // Protection Enable
#define CR0_MP 0x00000002 // Monitor coProcessor
#define CR0_EM 0x00000004 // Emulation
#define CR0_TS 0x00000008 // Task Switched
#define CR0_ET 0x00000010 // Extension Type
#define CR0_NE 0x00000020 // Numeric Errror
#define CR0_WP 0x00010000 // Write Protect
#define CR0_AM 0x00040000 // Alignment Mask
#define CR0_NW 0x20000000 // Not Writethrough
#define CR0_CD 0x40000000 // Cache Disable
#define CR0_PG 0x80000000 // Paging
#define CR4_PSE 0x00000010 // Page size extension
#define CR4_PSE 0x00000010 // Page size extension
#define SEG_KCODE 1 // kernel code
#define SEG_KDATA 2 // kernel data+stack
@ -109,39 +109,39 @@ struct segdesc {
// \--- PDX(va) --/ \--- PTX(va) --/
// page directory index
#define PDX(va) (((uint)(va) >> PDXSHIFT) & 0x3FF)
#define PDX(va) (((uint)(va) >> PDXSHIFT) & 0x3FF)
// page table index
#define PTX(va) (((uint)(va) >> PTXSHIFT) & 0x3FF)
#define PTX(va) (((uint)(va) >> PTXSHIFT) & 0x3FF)
// construct virtual address from indexes and offset
#define PGADDR(d, t, o) ((uint)((d) << PDXSHIFT | (t) << PTXSHIFT | (o)))
#define PGADDR(d, t, o) ((uint)((d) << PDXSHIFT | (t) << PTXSHIFT | (o)))
// Page directory and page table constants.
#define NPDENTRIES 1024 // page directory entries per page directory
#define NPTENTRIES 1024 // page table entries per page table
#define NPDENTRIES 1024 // page directory entries per page directory
#define NPTENTRIES 1024 // page table entries per page table
#define PGSIZE 4096 // bytes mapped by a page
#define PGSHIFT 12 // log2(PGSIZE)
#define PTXSHIFT 12 // offset of PTX in a linear address
#define PDXSHIFT 22 // offset of PDX in a linear address
#define PTXSHIFT 12 // offset of PTX in a linear address
#define PDXSHIFT 22 // offset of PDX in a linear address
#define PGROUNDUP(sz) (((sz)+PGSIZE-1) & ~(PGSIZE-1))
#define PGROUNDDOWN(a) (((a)) & ~(PGSIZE-1))
// Page table/directory entry flags.
#define PTE_P 0x001 // Present
#define PTE_W 0x002 // Writeable
#define PTE_U 0x004 // User
#define PTE_PWT 0x008 // Write-Through
#define PTE_PCD 0x010 // Cache-Disable
#define PTE_A 0x020 // Accessed
#define PTE_D 0x040 // Dirty
#define PTE_PS 0x080 // Page Size
#define PTE_MBZ 0x180 // Bits must be zero
#define PTE_P 0x001 // Present
#define PTE_W 0x002 // Writeable
#define PTE_U 0x004 // User
#define PTE_PWT 0x008 // Write-Through
#define PTE_PCD 0x010 // Cache-Disable
#define PTE_A 0x020 // Accessed
#define PTE_D 0x040 // Dirty
#define PTE_PS 0x080 // Page Size
#define PTE_MBZ 0x180 // Bits must be zero
// Address in page table or page directory entry
#define PTE_ADDR(pte) ((uint)(pte) & ~0xFFF)
#define PTE_ADDR(pte) ((uint)(pte) & ~0xFFF)
#ifndef __ASSEMBLER__
typedef uint pte_t;

2
vm.c
View file

@ -137,7 +137,7 @@ setupkvm(char* (*alloc)(void))
panic("PHYSTOP too high");
for(k = kmap; k < &kmap[NELEM(kmap)]; k++)
if(mappages(pgdir, k->virt, k->phys_end - k->phys_start, (uint)k->phys_start,
k->perm, alloc) < 0)
k->perm, alloc) < 0)
return 0;
return pgdir;