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authorRich Felker <dalias@aerifal.cx>2015-09-12 02:50:28 +0000
committerRich Felker <dalias@aerifal.cx>2015-09-12 02:50:28 +0000
commitad5d8a2bf3526bce4317055612709ac076b5c4c3 (patch)
tree015d43a66be3e775c5c79171dc85ea814b98e7fb
parent17cdbc4e427fd4f9cfdecb455294245732cbb36f (diff)
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make sh crti/crtn init/fini fragments setup proper stack frame
for fdpic support is is essential that the got pointer be saved at a known, ABI-dictated offset from the frame pointer, since there is no way to recover it once it's lost.
-rw-r--r--crt/sh/crti.s8
-rw-r--r--crt/sh/crtn.s8
2 files changed, 14 insertions, 2 deletions
diff --git a/crt/sh/crti.s b/crt/sh/crti.s
index 0410ab63..d99bfd5c 100644
--- a/crt/sh/crti.s
+++ b/crt/sh/crti.s
@@ -2,12 +2,20 @@
.global _init
.type _init, @function
_init:
+ add #-4, r15
+ mov.l r12, @-r15
+ mov.l r14, @-r15
sts.l pr, @-r15
+ mov r15, r14
nop
.section .fini
.global _fini
.type _fini, @function
_fini:
+ add #-4, r15
+ mov.l r12, @-r15
+ mov.l r14, @-r15
sts.l pr, @-r15
+ mov r15, r14
nop
diff --git a/crt/sh/crtn.s b/crt/sh/crtn.s
index dde633b0..958ce951 100644
--- a/crt/sh/crtn.s
+++ b/crt/sh/crtn.s
@@ -1,9 +1,13 @@
.section .init
lds.l @r15+, pr
+ mov.l @r15+, r14
+ mov.l @r15+, r12
rts
- nop
+ add #4, r15
.section .fini
lds.l @r15+, pr
+ mov.l @r15+, r14
+ mov.l @r15+, r12
rts
- nop
+ add #4, r15