Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
This commit is contained in:
Linus Torvalds
2005-04-16 15:20:36 -07:00
کامیت 1da177e4c3
17291فایلهای تغییر یافته به همراه6718755 افزوده شده و 0 حذف شده

25
arch/mips/lib-64/Makefile Normal file
مشاهده پرونده

@@ -0,0 +1,25 @@
#
# Makefile for MIPS-specific library files..
#
lib-y += csum_partial.o memset.o watch.o
obj-$(CONFIG_CPU_MIPS32) += dump_tlb.o
obj-$(CONFIG_CPU_MIPS64) += dump_tlb.o
obj-$(CONFIG_CPU_NEVADA) += dump_tlb.o
obj-$(CONFIG_CPU_R10000) += dump_tlb.o
obj-$(CONFIG_CPU_R3000) += r3k_dump_tlb.o
obj-$(CONFIG_CPU_R4300) += dump_tlb.o
obj-$(CONFIG_CPU_R4X00) += dump_tlb.o
obj-$(CONFIG_CPU_R5000) += dump_tlb.o
obj-$(CONFIG_CPU_R5432) += dump_tlb.o
obj-$(CONFIG_CPU_R6000) +=
obj-$(CONFIG_CPU_R8000) +=
obj-$(CONFIG_CPU_RM7000) += dump_tlb.o
obj-$(CONFIG_CPU_RM9000) += dump_tlb.o
obj-$(CONFIG_CPU_SB1) += dump_tlb.o
obj-$(CONFIG_CPU_TX39XX) += r3k_dump_tlb.o
obj-$(CONFIG_CPU_TX49XX) += dump_tlb.o
obj-$(CONFIG_CPU_VR41XX) += dump_tlb.o
EXTRA_AFLAGS := $(CFLAGS)

مشاهده پرونده

@@ -0,0 +1,242 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Quick'n'dirty IP checksum ...
*
* Copyright (C) 1998, 1999 Ralf Baechle
* Copyright (C) 1999 Silicon Graphics, Inc.
*/
#include <asm/asm.h>
#include <asm/regdef.h>
#define ADDC(sum,reg) \
addu sum, reg; \
sltu v1, sum, reg; \
addu sum, v1
#define CSUM_BIGCHUNK(src, offset, sum, t0, t1, t2, t3) \
lw t0, (offset + 0x00)(src); \
lw t1, (offset + 0x04)(src); \
lw t2, (offset + 0x08)(src); \
lw t3, (offset + 0x0c)(src); \
ADDC(sum, t0); \
ADDC(sum, t1); \
ADDC(sum, t2); \
ADDC(sum, t3); \
lw t0, (offset + 0x10)(src); \
lw t1, (offset + 0x14)(src); \
lw t2, (offset + 0x18)(src); \
lw t3, (offset + 0x1c)(src); \
ADDC(sum, t0); \
ADDC(sum, t1); \
ADDC(sum, t2); \
ADDC(sum, t3); \
/*
* a0: source address
* a1: length of the area to checksum
* a2: partial checksum
*/
#define src a0
#define sum v0
.text
.set noreorder
/* unknown src alignment and < 8 bytes to go */
small_csumcpy:
move a1, ta2
andi ta0, a1, 4
beqz ta0, 1f
andi ta0, a1, 2
/* Still a full word to go */
ulw ta1, (src)
daddiu src, 4
ADDC(sum, ta1)
1: move ta1, zero
beqz ta0, 1f
andi ta0, a1, 1
/* Still a halfword to go */
ulhu ta1, (src)
daddiu src, 2
1: beqz ta0, 1f
sll ta1, ta1, 16
lbu ta2, (src)
nop
#ifdef __MIPSEB__
sll ta2, ta2, 8
#endif
or ta1, ta2
1: ADDC(sum, ta1)
/* fold checksum */
sll v1, sum, 16
addu sum, v1
sltu v1, sum, v1
srl sum, sum, 16
addu sum, v1
/* odd buffer alignment? */
beqz t3, 1f
nop
sll v1, sum, 8
srl sum, sum, 8
or sum, v1
andi sum, 0xffff
1:
.set reorder
/* Add the passed partial csum. */
ADDC(sum, a2)
jr ra
.set noreorder
/* ------------------------------------------------------------------------- */
.align 5
LEAF(csum_partial)
move sum, zero
move t3, zero
sltiu t8, a1, 0x8
bnez t8, small_csumcpy /* < 8 bytes to copy */
move ta2, a1
beqz a1, out
andi t3, src, 0x1 /* odd buffer? */
hword_align:
beqz t3, word_align
andi t8, src, 0x2
lbu ta0, (src)
dsubu a1, a1, 0x1
#ifdef __MIPSEL__
sll ta0, ta0, 8
#endif
ADDC(sum, ta0)
daddu src, src, 0x1
andi t8, src, 0x2
word_align:
beqz t8, dword_align
sltiu t8, a1, 56
lhu ta0, (src)
dsubu a1, a1, 0x2
ADDC(sum, ta0)
sltiu t8, a1, 56
daddu src, src, 0x2
dword_align:
bnez t8, do_end_words
move t8, a1
andi t8, src, 0x4
beqz t8, qword_align
andi t8, src, 0x8
lw ta0, 0x00(src)
dsubu a1, a1, 0x4
ADDC(sum, ta0)
daddu src, src, 0x4
andi t8, src, 0x8
qword_align:
beqz t8, oword_align
andi t8, src, 0x10
lw ta0, 0x00(src)
lw ta1, 0x04(src)
dsubu a1, a1, 0x8
ADDC(sum, ta0)
ADDC(sum, ta1)
daddu src, src, 0x8
andi t8, src, 0x10
oword_align:
beqz t8, begin_movement
dsrl t8, a1, 0x7
lw ta3, 0x08(src)
lw t0, 0x0c(src)
lw ta0, 0x00(src)
lw ta1, 0x04(src)
ADDC(sum, ta3)
ADDC(sum, t0)
ADDC(sum, ta0)
ADDC(sum, ta1)
dsubu a1, a1, 0x10
daddu src, src, 0x10
dsrl t8, a1, 0x7
begin_movement:
beqz t8, 1f
andi ta2, a1, 0x40
move_128bytes:
CSUM_BIGCHUNK(src, 0x00, sum, ta0, ta1, ta3, t0)
CSUM_BIGCHUNK(src, 0x20, sum, ta0, ta1, ta3, t0)
CSUM_BIGCHUNK(src, 0x40, sum, ta0, ta1, ta3, t0)
CSUM_BIGCHUNK(src, 0x60, sum, ta0, ta1, ta3, t0)
dsubu t8, t8, 0x01
bnez t8, move_128bytes
daddu src, src, 0x80
1:
beqz ta2, 1f
andi ta2, a1, 0x20
move_64bytes:
CSUM_BIGCHUNK(src, 0x00, sum, ta0, ta1, ta3, t0)
CSUM_BIGCHUNK(src, 0x20, sum, ta0, ta1, ta3, t0)
daddu src, src, 0x40
1:
beqz ta2, do_end_words
andi t8, a1, 0x1c
move_32bytes:
CSUM_BIGCHUNK(src, 0x00, sum, ta0, ta1, ta3, t0)
andi t8, a1, 0x1c
daddu src, src, 0x20
do_end_words:
beqz t8, maybe_end_cruft
dsrl t8, t8, 0x2
end_words:
lw ta0, (src)
dsubu t8, t8, 0x1
ADDC(sum, ta0)
bnez t8, end_words
daddu src, src, 0x4
maybe_end_cruft:
andi ta2, a1, 0x3
small_memcpy:
j small_csumcpy; move a1, ta2 /* XXX ??? */
beqz t2, out
move a1, ta2
end_bytes:
lb ta0, (src)
dsubu a1, a1, 0x1
bnez a2, end_bytes
daddu src, src, 0x1
out:
jr ra
move v0, sum
END(csum_partial)

211
arch/mips/lib-64/dump_tlb.c Normal file
مشاهده پرونده

@@ -0,0 +1,211 @@
/*
* Dump R4x00 TLB for debugging purposes.
*
* Copyright (C) 1994, 1995 by Waldorf Electronics, written by Ralf Baechle.
* Copyright (C) 1999 by Silicon Graphics, Inc.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <asm/bootinfo.h>
#include <asm/cachectl.h>
#include <asm/cpu.h>
#include <asm/mipsregs.h>
#include <asm/page.h>
#include <asm/pgtable.h>
static inline const char *msk2str(unsigned int mask)
{
switch (mask) {
case PM_4K: return "4kb";
case PM_16K: return "16kb";
case PM_64K: return "64kb";
case PM_256K: return "256kb";
#ifndef CONFIG_CPU_VR41XX
case PM_1M: return "1Mb";
case PM_4M: return "4Mb";
case PM_16M: return "16Mb";
case PM_64M: return "64Mb";
case PM_256M: return "256Mb";
#endif
}
return "unknown";
}
#define BARRIER() \
__asm__ __volatile__( \
".set\tnoreorder\n\t" \
"nop;nop;nop;nop;nop;nop;nop\n\t" \
".set\treorder");
void dump_tlb(int first, int last)
{
unsigned long s_entryhi, entryhi, entrylo0, entrylo1, asid;
unsigned int s_index, pagemask, c0, c1, i;
s_entryhi = read_c0_entryhi();
s_index = read_c0_index();
asid = s_entryhi & 0xff;
for (i = first; i <= last; i++) {
write_c0_index(i);
BARRIER();
tlb_read();
BARRIER();
pagemask = read_c0_pagemask();
entryhi = read_c0_entryhi();
entrylo0 = read_c0_entrylo0();
entrylo1 = read_c0_entrylo1();
/* Unused entries have a virtual address of CKSEG0. */
if ((entryhi & ~0x1ffffUL) != CKSEG0
&& (entryhi & 0xff) == asid) {
/*
* Only print entries in use
*/
printk("Index: %2d pgmask=%s ", i, msk2str(pagemask));
c0 = (entrylo0 >> 3) & 7;
c1 = (entrylo1 >> 3) & 7;
printk("va=%011lx asid=%02lx\n",
(entryhi & ~0x1fffUL),
entryhi & 0xff);
printk("\t[pa=%011lx c=%d d=%d v=%d g=%ld] ",
(entrylo0 << 6) & PAGE_MASK, c0,
(entrylo0 & 4) ? 1 : 0,
(entrylo0 & 2) ? 1 : 0,
(entrylo0 & 1));
printk("[pa=%011lx c=%d d=%d v=%d g=%ld]\n",
(entrylo1 << 6) & PAGE_MASK, c1,
(entrylo1 & 4) ? 1 : 0,
(entrylo1 & 2) ? 1 : 0,
(entrylo1 & 1));
}
}
printk("\n");
write_c0_entryhi(s_entryhi);
write_c0_index(s_index);
}
void dump_tlb_all(void)
{
dump_tlb(0, current_cpu_data.tlbsize - 1);
}
void dump_tlb_wired(void)
{
int wired;
wired = read_c0_wired();
printk("Wired: %d", wired);
dump_tlb(0, read_c0_wired());
}
void dump_tlb_addr(unsigned long addr)
{
unsigned int flags, oldpid;
int index;
local_irq_save(flags);
oldpid = read_c0_entryhi() & 0xff;
BARRIER();
write_c0_entryhi((addr & PAGE_MASK) | oldpid);
BARRIER();
tlb_probe();
BARRIER();
index = read_c0_index();
write_c0_entryhi(oldpid);
local_irq_restore(flags);
if (index < 0) {
printk("No entry for address 0x%08lx in TLB\n", addr);
return;
}
printk("Entry %d maps address 0x%08lx\n", index, addr);
dump_tlb(index, index);
}
void dump_tlb_nonwired(void)
{
dump_tlb(read_c0_wired(), current_cpu_data.tlbsize - 1);
}
void dump_list_process(struct task_struct *t, void *address)
{
pgd_t *page_dir, *pgd;
pmd_t *pmd;
pte_t *pte, page;
unsigned long addr, val;
addr = (unsigned long) address;
printk("Addr == %08lx\n", addr);
printk("tasks->mm.pgd == %08lx\n", (unsigned long) t->mm->pgd);
page_dir = pgd_offset(t->mm, 0);
printk("page_dir == %016lx\n", (unsigned long) page_dir);
pgd = pgd_offset(t->mm, addr);
printk("pgd == %016lx\n", (unsigned long) pgd);
pmd = pmd_offset(pgd, addr);
printk("pmd == %016lx\n", (unsigned long) pmd);
pte = pte_offset(pmd, addr);
printk("pte == %016lx\n", (unsigned long) pte);
page = *pte;
printk("page == %08lx\n", pte_val(page));
val = pte_val(page);
if (val & _PAGE_PRESENT) printk("present ");
if (val & _PAGE_READ) printk("read ");
if (val & _PAGE_WRITE) printk("write ");
if (val & _PAGE_ACCESSED) printk("accessed ");
if (val & _PAGE_MODIFIED) printk("modified ");
if (val & _PAGE_R4KBUG) printk("r4kbug ");
if (val & _PAGE_GLOBAL) printk("global ");
if (val & _PAGE_VALID) printk("valid ");
printk("\n");
}
void dump_list_current(void *address)
{
dump_list_process(current, address);
}
unsigned int vtop(void *address)
{
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
unsigned int addr, paddr;
addr = (unsigned long) address;
pgd = pgd_offset(current->mm, addr);
pmd = pmd_offset(pgd, addr);
pte = pte_offset(pmd, addr);
paddr = (CKSEG1 | (unsigned int) pte_val(*pte)) & PAGE_MASK;
paddr |= (addr & ~PAGE_MASK);
return paddr;
}
void dump16(unsigned long *p)
{
int i;
for (i = 0; i < 8; i++) {
printk("*%08lx == %08lx, ", (unsigned long)p, *p);
p++;
printk("*%08lx == %08lx\n", (unsigned long)p, *p);
p++;
}
}

142
arch/mips/lib-64/memset.S Normal file
مشاهده پرونده

@@ -0,0 +1,142 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1998, 1999, 2000 by Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*/
#include <asm/asm.h>
#include <asm/offset.h>
#include <asm/regdef.h>
#define EX(insn,reg,addr,handler) \
9: insn reg, addr; \
.section __ex_table,"a"; \
PTR 9b, handler; \
.previous
.macro f_fill64 dst, offset, val, fixup
EX(LONG_S, \val, (\offset + 0 * LONGSIZE)(\dst), \fixup)
EX(LONG_S, \val, (\offset + 1 * LONGSIZE)(\dst), \fixup)
EX(LONG_S, \val, (\offset + 2 * LONGSIZE)(\dst), \fixup)
EX(LONG_S, \val, (\offset + 3 * LONGSIZE)(\dst), \fixup)
EX(LONG_S, \val, (\offset + 4 * LONGSIZE)(\dst), \fixup)
EX(LONG_S, \val, (\offset + 5 * LONGSIZE)(\dst), \fixup)
EX(LONG_S, \val, (\offset + 6 * LONGSIZE)(\dst), \fixup)
EX(LONG_S, \val, (\offset + 7 * LONGSIZE)(\dst), \fixup)
.endm
/*
* memset(void *s, int c, size_t n)
*
* a0: start of area to clear
* a1: char to fill with
* a2: size of area to clear
*/
.set noreorder
.align 5
LEAF(memset)
beqz a1, 1f
move v0, a0 /* result */
andi a1, 0xff /* spread fillword */
dsll t1, a1, 8
or a1, t1
dsll t1, a1, 16
or a1, t1
dsll t1, a1, 32
or a1, t1
1:
FEXPORT(__bzero)
sltiu t0, a2, LONGSIZE /* very small region? */
bnez t0, small_memset
andi t0, a0, LONGMASK /* aligned? */
beqz t0, 1f
PTR_SUBU t0, LONGSIZE /* alignment in bytes */
#ifdef __MIPSEB__
EX(sdl, a1, (a0), first_fixup) /* make dword aligned */
#endif
#ifdef __MIPSEL__
EX(sdr, a1, (a0), first_fixup) /* make dword aligned */
#endif
PTR_SUBU a0, t0 /* long align ptr */
PTR_ADDU a2, t0 /* correct size */
1: ori t1, a2, 0x3f /* # of full blocks */
xori t1, 0x3f
beqz t1, memset_partial /* no block to fill */
andi t0, a2, 0x38
PTR_ADDU t1, a0 /* end address */
.set reorder
1: PTR_ADDIU a0, 64
f_fill64 a0, -64, a1, fwd_fixup
bne t1, a0, 1b
.set noreorder
memset_partial:
PTR_LA t1, 2f /* where to start */
.set noat
dsrl AT, t0, 1
PTR_SUBU t1, AT
.set noat
jr t1
PTR_ADDU a0, t0 /* dest ptr */
.set push
.set noreorder
.set nomacro
f_fill64 a0, -64, a1, partial_fixup /* ... but first do longs ... */
2: .set pop
andi a2, LONGMASK /* At most one long to go */
beqz a2, 1f
PTR_ADDU a0, a2 /* What's left */
#ifdef __MIPSEB__
EX(sdr, a1, -1(a0), last_fixup)
#endif
#ifdef __MIPSEL__
EX(sdl, a1, -1(a0), last_fixup)
#endif
1: jr ra
move a2, zero
small_memset:
beqz a2, 2f
PTR_ADDU t1, a0, a2
1: PTR_ADDIU a0, 1 /* fill bytewise */
bne t1, a0, 1b
sb a1, -1(a0)
2: jr ra /* done */
move a2, zero
END(memset)
first_fixup:
jr ra
nop
fwd_fixup:
PTR_L t0, TI_TASK($28)
LONG_L t0, THREAD_BUADDR(t0)
andi a2, 0x3f
LONG_ADDU a2, t1
jr ra
LONG_SUBU a2, t0
partial_fixup:
PTR_L t0, TI_TASK($28)
LONG_L t0, THREAD_BUADDR(t0)
andi a2, LONGMASK
LONG_ADDU a2, t1
jr ra
LONG_SUBU a2, t0
last_fixup:
jr ra
andi v1, a2, LONGMASK

57
arch/mips/lib-64/watch.S Normal file
مشاهده پرونده

@@ -0,0 +1,57 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Kernel debug stuff to use the Watch registers.
* Useful to find stack overflows, dangling pointers etc.
*
* Copyright (C) 1995, 1996, 1999, 2001 by Ralf Baechle
*/
#include <asm/asm.h>
#include <asm/mipsregs.h>
#include <asm/regdef.h>
.set noreorder
/*
* Parameter: a0 - physical address to watch
* a1 - set bit #1 to trap on load references
* bit #0 to trap on store references
* Results : none
*/
LEAF(__watch_set)
ori a0, 7
xori a0, 7
or a0, a1
mtc0 a0, CP0_WATCHLO
sd a0, watch_savelo
dsrl32 a0, a0, 0
jr ra
mtc0 zero, CP0_WATCHHI
END(__watch_set)
/*
* Parameter: none
* Results : none
*/
LEAF(__watch_clear)
jr ra
mtc0 zero, CP0_WATCHLO
END(__watch_clear)
/*
* Parameter: none
* Results : none
*/
LEAF(__watch_reenable)
ld t0, watch_savelo
jr ra
mtc0 t0, CP0_WATCHLO
END(__watch_reenable)
/*
* Saved value of the c0_watchlo register for watch_reenable()
*/
.local watch_savelo
.comm watch_savelo, 8, 8