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Reconstructed from http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2003-December/018647.html
See also http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=1540
Message-ID: <DDA001.8070502@de.bosch.com>
Subject: Help cross compiling the kernel for arm.
From: dirk.behme at de.bosch.com
Aitor Garcia wrote:
> Hello everybody,
>
> I am having problems cross compiling the kernel for arm.
>
> This is the error message I get:
>
> blkpg.c: In function `blk_ioctl':
> blkpg.c:252: error: asm-specifier for variable `__r1' conflicts with asm clobber list
> blkpg.c:252: confused by earlier errors, bailing out make[3]: *** [blkpg.o] Error 1
> make[3]: Leaving directory `/root/toolchain/kernel-arm/linux-2.4.21/drivers/block'
> make[2]: *** [first_rule] Error 2
> make[2]: Leaving directory `/root/toolchain/kernel-arm/linux-2.4.21/drivers/block'
> make[1]: *** [_subdir_block] Error 2
> make[1]: Leaving directory `/root/toolchain/kernel-arm/linux-2.4.21/drivers'
> make: *** [_dir_drivers] Error 2
>
> These are the toolchain versions I am using:
> host=i686-pc-linux-gnu
> binutils_version=2.14
> gcc_version=3.3.2
> glibc_version=2.3.2
> kernel_version=2.4.21
> and applied the kernel patch for arm. 2.4.21-rmk1.
> ...
> I have also seen references to this bug in ARM linux
> Developer. Patch Number = 1540. But this patch is
> classified as discarded.
You need something like 1540 to compile 2.4.21 with gcc 3.3.2. 1540 was
discarded because of AFLAGS change.
Try the attachment.
Dirk
-------------- next part --------------
--- linux/arch/arm/lib/getuser.S.orig Mon Nov 17 07:41:51 2003
+++ linux/arch/arm/lib/getuser.S Mon Nov 17 07:43:16 2003
@@ -17,7 +17,7 @@
*
* Inputs: r0 contains the address
* Outputs: r0 is the error code
- * r1, r2 contains the zero-extended value
+ * r1, ip contains the zero-extended value
* lr corrupted
*
* No other registers must be altered. (see include/asm-arm/uaccess.h
@@ -42,14 +42,14 @@ __get_user_1:
.global __get_user_2
__get_user_2:
- bic r2, sp, #0x1f00
- bic r2, r2, #0x00ff
- ldr r2, [r2, #TSK_ADDR_LIMIT]
- sub r2, r2, #2
- cmp r0, r2
+ bic ip, sp, #0x1f00
+ bic ip, ip, #0x00ff
+ ldr ip, [ip, #TSK_ADDR_LIMIT]
+ sub ip, ip, #2
+ cmp r0, ip
2: ldrlsbt r1, [r0], #1
-3: ldrlsbt r2, [r0]
- orrls r1, r1, r2, lsl #8
+3: ldrlsbt ip, [r0]
+ orrls r1, r1, ip, lsl #8
movls r0, #0
movls pc, lr
b __get_user_bad
@@ -68,20 +68,20 @@ __get_user_4:
.global __get_user_8
__get_user_8:
- bic r2, sp, #0x1f00
- bic r2, r2, #0x00ff
- ldr r2, [r2, #TSK_ADDR_LIMIT]
- sub r2, r2, #8
- cmp r0, r2
+ bic ip, sp, #0x1f00
+ bic ip, ip, #0x00ff
+ ldr ip, [ip, #TSK_ADDR_LIMIT]
+ sub ip, ip, #8
+ cmp r0, ip
5: ldrlst r1, [r0], #4
-6: ldrlst r2, [r0]
+6: ldrlst ip, [r0]
movls r0, #0
movls pc, lr
/* fall through */
__get_user_bad_8:
- mov r2, #0
+ mov ip, #0
__get_user_bad:
mov r1, #0
mov r0, #-14
--- linux/arch/arm/lib/putuser.S.orig Mon Nov 17 07:41:57 2003
+++ linux/arch/arm/lib/putuser.S Mon Nov 17 07:42:26 2003
@@ -16,7 +16,7 @@
* __put_user_X
*
* Inputs: r0 contains the address
- * r1, r2 contains the value
+ * r1, ip contains the value
* Outputs: r0 is the error code
* lr corrupted
*
@@ -30,11 +30,11 @@
.global __put_user_1
__put_user_1:
- bic r2, sp, #0x1f00
- bic r2, r2, #0x00ff
- ldr r2, [r2, #TSK_ADDR_LIMIT]
- sub r2, r2, #1
- cmp r0, r2
+ bic ip, sp, #0x1f00
+ bic ip, ip, #0x00ff
+ ldr ip, [ip, #TSK_ADDR_LIMIT]
+ sub ip, ip, #1
+ cmp r0, ip
1: strlsbt r1, [r0]
movls r0, #0
movls pc, lr
@@ -42,11 +42,11 @@ __put_user_1:
.global __put_user_2
__put_user_2:
- bic r2, sp, #0x1f00
- bic r2, r2, #0x00ff
- ldr r2, [r2, #TSK_ADDR_LIMIT]
- sub r2, r2, #2
- cmp r0, r2
+ bic ip, sp, #0x1f00
+ bic ip, ip, #0x00ff
+ ldr ip, [ip, #TSK_ADDR_LIMIT]
+ sub ip, ip, #2
+ cmp r0, ip
2: strlsbt r1, [r0], #1
movls r1, r1, lsr #8
3: strlsbt r1, [r0]
@@ -56,11 +56,11 @@ __put_user_2:
.global __put_user_4
__put_user_4:
- bic r2, sp, #0x1f00
- bic r2, r2, #0x00ff
- ldr r2, [r2, #TSK_ADDR_LIMIT]
- sub r2, r2, #4
- cmp r0, r2
+ bic ip, sp, #0x1f00
+ bic ip, ip, #0x00ff
+ ldr ip, [ip, #TSK_ADDR_LIMIT]
+ sub ip, ip, #4
+ cmp r0, ip
4: strlst r1, [r0]
movls r0, #0
movls pc, lr
@@ -74,7 +74,7 @@ __put_user_8:
sub ip, ip, #8
cmp r0, ip
5: strlst r1, [r0], #4
-6: strlst r2, [r0]
+6: strlst ip, [r0]
movls r0, #0
movls pc, lr
--- linux/include/asm-arm/uaccess.h.orig Mon Nov 17 07:41:04 2003
+++ linux/include/asm-arm/uaccess.h Mon Nov 17 07:41:37 2003
@@ -86,7 +86,7 @@ extern int __get_user_bad(void);
__get_user_x(__r1, __p, __e, 1, "lr"); \
break; \
case 2: \
- __get_user_x(__r1, __p, __e, 2, "r2", "lr"); \
+ __get_user_x(__r1, __p, __e, 2, "ip", "lr"); \
break; \
case 4: \
__get_user_x(__r1, __p, __e, 4, "lr"); \
@@ -122,13 +122,13 @@ extern int __put_user_bad(void);
register int __e asm("r0"); \
switch (sizeof(*(p))) { \
case 1: \
- __put_user_x(__r1, __p, __e, 1, "r2", "lr"); \
+ __put_user_x(__r1, __p, __e, 1, "ip", "lr"); \
break; \
case 2: \
- __put_user_x(__r1, __p, __e, 2, "r2", "lr"); \
+ __put_user_x(__r1, __p, __e, 2, "ip", "lr"); \
break; \
case 4: \
- __put_user_x(__r1, __p, __e, 4, "r2", "lr"); \
+ __put_user_x(__r1, __p, __e, 4, "ip", "lr"); \
break; \
case 8: \
__put_user_x(__r1, __p, __e, 8, "ip", "lr"); \
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