tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sh: Various nommu fixes.

Browse Source 
This fixes up some of the various outstanding nommu bugs on
SH.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Yoshinori Sato
2006-09-27 17:21:02 +09:00
committed by Paul Mundt
parent e7f93a355c
commit e96636ccfa
8 changed files with 50 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/asm-sh/addrspace.h
+8
View File
@@ -14,11 +14,19 @@
#include <asm/cpu/addrspace.h>
/* Memory segments (32bit Privileged mode addresses) */
#ifdef CONFIG_MMU
#define P0SEG 0x00000000
#define P1SEG 0x80000000
#define P2SEG 0xa0000000
#define P3SEG 0xc0000000
#define P4SEG 0xe0000000
#else
#define P0SEG 0x00000000
#define P1SEG 0x00000000
#define P2SEG 0x20000000
#define P3SEG 0x40000000
#define P4SEG 0x80000000
#endif
/* Returns the privileged segment base of a given address */
#define PXSEG(a) (((unsigned long)(a)) & 0xe0000000)
include/asm-sh/flat.h
+1 -1
View File
@@ -13,7 +13,7 @@
#define __ASM_SH_FLAT_H
#define flat_stack_align(sp) /* nothing needed */
#define flat_argvp_envp_on_stack() 1
#define flat_argvp_envp_on_stack() 0
#define flat_old_ram_flag(flags) (flags)
#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
#define flat_get_addr_from_rp(rp, relval, flags) get_unaligned(rp)
include/asm-sh/mmu.h
+1 -12
View File
@@ -3,19 +3,8 @@
#if !defined(CONFIG_MMU)
struct mm_rblock_struct {
int size;
int refcount;
void *kblock;
};
struct mm_tblock_struct {
struct mm_rblock_struct *rblock;
struct mm_tblock_struct *next;
};
typedef struct {
struct mm_tblock_struct tblock;
struct vm_list_struct *vmlist;
unsigned long end_brk;
} mm_context_t;
include/asm-sh/page.h
+5
View File
@@ -38,8 +38,13 @@
extern void (*clear_page)(void *to);
extern void (*copy_page)(void *to, void *from);
#ifdef CONFIG_MMU
extern void clear_page_slow(void *to);
extern void copy_page_slow(void *to, void *from);
#else
extern void clear_page_nommu(void *to);
extern void copy_page_nommu(void *to, void *from);
#endif
#if defined(CONFIG_MMU) && (defined(CONFIG_CPU_SH4) || \
defined(CONFIG_SH7705_CACHE_32KB))
include/asm-sh/uaccess.h
+13
View File
@@ -168,6 +168,7 @@ do { \
__gu_err; \
})
#ifdef CONFIG_MMU
#define __get_user_check(x,ptr,size) \
({ \
long __gu_err, __gu_val; \
@@ -257,6 +258,18 @@ __asm__("stc r7_bank, %1\n\t" \
: "r" (addr) \
: "t"); \
})
#else /* CONFIG_MMU */
#define __get_user_check(x,ptr,size) \
({ \
long __gu_err, __gu_val; \
if (__access_ok((unsigned long)(ptr), (size))) { \
__get_user_size(__gu_val, (ptr), (size), __gu_err); \
(x) = (__typeof__(*(ptr)))__gu_val; \
} else \
__gu_err = -EFAULT; \
__gu_err; \
})
#endif
#define __get_user_asm(x, addr, err, insn) \
({ \