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* grub-core/kern/arm/misc.S: Add __muldi3 and __aeabi_lmul. Those

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helper functions are needed for thumb.
This commit is contained in:
Vladimir Serbinenko 2013-11-13 09:52:33 +01:00
parent 7d5116251d
commit 5e77d9cfc1
3 changed files with 38 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2013-11-13 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/kern/arm/misc.S: Add __muldi3 and __aeabi_lmul. Those
helper functions are needed for thumb.
2013-11-13 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/disk/diskfilter.c (grub_diskfilter_make_raid): Make

27
grub-core/kern/arm/misc.S
View file

@ -30,6 +30,33 @@
.align 2
FUNCTION(__muldi3)
FUNCTION(__aeabi_lmul)
stmfd sp!, {r4, fp}
add fp, sp, #4
sub sp, sp, #16
str r0, [fp, #-12]
str r1, [fp, #-8]
str r2, [fp, #-20]
str r3, [fp, #-16]
ldr r3, [fp, #-8]
ldr r2, [fp, #-20]
.long 0xe0020293 @ mul r2, r3, r2
ldr r3, [fp, #-16]
ldr r1, [fp, #-12]
.long 0xe0030391 @ mul r3, r1, r3
add r2, r2, r3
ldr r0, [fp, #-12]
ldr r1, [fp, #-20]
umull r3, r4, r0, r1
add r2, r2, r4
mov r4, r2
mov r0, r3
mov r1, r4
sub sp, fp, #4
ldmfd sp!, {r4, fp}
bx lr
.macro division parent
stmfd sp!, {lr}

6
include/grub/misc.h
View file

@ -469,6 +469,12 @@ EXPORT_FUNC (__aeabi_uidiv) (grub_uint32_t a, grub_uint32_t b);
grub_uint32_t
EXPORT_FUNC (__aeabi_uidivmod) (grub_uint32_t a, grub_uint32_t b);
/* Needed for allowing modules to be compiled as thumb. */
grub_uint64_t
EXPORT_FUNC (__muldi3) (grub_uint64_t a, grub_uint64_t b);
grub_uint64_t
EXPORT_FUNC (__aeabi_lmul) (grub_uint64_t a, grub_uint64_t b);
#endif
#if defined (__ia64__)