korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-16 08:44:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

parisc: Remove unnecessary macros from entry.S

Browse Source 
The EXTR, DEP and DEPI macros are unnecessary.  There are PA 1.X
pneumonics available with the same functionality, and the DEP and DEPI
macros conflict with assembler pneumonics.

Tested on a variety of 32 and 64-bit systems.

Signed-off-by: John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
John David Anglin 2010-04-11 17:03:54 +00:00 committed by Kyle McMartin
parent f4c0346c6f
commit 9b437bca16
1 changed files with 7 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
arch/parisc/kernel/entry.S
View File

@ -364,32 +364,6 @@
.align 32
.endm
/* The following are simple 32 vs 64 bit instruction
* abstractions for the macros */
.macro EXTR reg1,start,length,reg2
#ifdef CONFIG_64BIT
extrd,u \reg1,32+(\start),\length,\reg2
#else
extrw,u \reg1,\start,\length,\reg2
#endif
.endm
.macro DEP reg1,start,length,reg2
#ifdef CONFIG_64BIT
depd \reg1,32+(\start),\length,\reg2
#else
depw \reg1,\start,\length,\reg2
#endif
.endm
.macro DEPI val,start,length,reg
#ifdef CONFIG_64BIT
depdi \val,32+(\start),\length,\reg
#else
depwi \val,\start,\length,\reg
#endif
.endm
/* In LP64, the space contains part of the upper 32 bits of the
* fault. We have to extract this and place it in the va,
* zeroing the corresponding bits in the space register */
@ -442,19 +416,19 @@
*/
.macro L2_ptep pmd,pte,index,va,fault
#if PT_NLEVELS == 3
EXTR \va,31-ASM_PMD_SHIFT,ASM_BITS_PER_PMD,\index
extru \va,31-ASM_PMD_SHIFT,ASM_BITS_PER_PMD,\index
#else
EXTR \va,31-ASM_PGDIR_SHIFT,ASM_BITS_PER_PGD,\index
extru \va,31-ASM_PGDIR_SHIFT,ASM_BITS_PER_PGD,\index
#endif
DEP %r0,31,PAGE_SHIFT,\pmd /* clear offset */
dep %r0,31,PAGE_SHIFT,\pmd /* clear offset */
copy %r0,\pte
ldw,s \index(\pmd),\pmd
bb,>=,n \pmd,_PxD_PRESENT_BIT,\fault
DEP %r0,31,PxD_FLAG_SHIFT,\pmd /* clear flags */
dep %r0,31,PxD_FLAG_SHIFT,\pmd /* clear flags */
copy \pmd,%r9
SHLREG %r9,PxD_VALUE_SHIFT,\pmd
EXTR \va,31-PAGE_SHIFT,ASM_BITS_PER_PTE,\index
DEP %r0,31,PAGE_SHIFT,\pmd /* clear offset */
extru \va,31-PAGE_SHIFT,ASM_BITS_PER_PTE,\index
dep %r0,31,PAGE_SHIFT,\pmd /* clear offset */
shladd \index,BITS_PER_PTE_ENTRY,\pmd,\pmd
LDREG %r0(\pmd),\pte /* pmd is now pte */
bb,>=,n \pte,_PAGE_PRESENT_BIT,\fault
@ -605,7 +579,7 @@
depdi 0,31,32,\tmp
#endif
copy \va,\tmp1
DEPI 0,31,23,\tmp1
depi 0,31,23,\tmp1
cmpb,COND(<>),n \tmp,\tmp1,\fault
ldi (_PAGE_DIRTY|_PAGE_WRITE|_PAGE_READ),\prot
depd,z \prot,8,7,\prot