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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2018-08-10 09:07:43 +0200 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2018-08-10 09:07:43 +0200 |
| commit | c8ad85225bd5968e45c716519d88743811dbdb3e (patch) | |
| tree | c4f17a70bdab6490a61e01b0f5c87c9191e37d2a /sysdeps/s390/s390-32 | |
| parent | b215eee1e1dca1ed76678afff2710ed7a38aedc4 (diff) | |
| download | glibc-c8ad85225bd5968e45c716519d88743811dbdb3e.tar.gz glibc-c8ad85225bd5968e45c716519d88743811dbdb3e.tar.xz glibc-c8ad85225bd5968e45c716519d88743811dbdb3e.zip | |
S390: Do not clobber R0 in 32-bit _dl_runtime_profile
Preparation for the usage of R0 by __fentry__. ChangeLog: * sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_profile): Do not clobber R0.
Diffstat (limited to 'sysdeps/s390/s390-32')
| -rw-r--r-- | sysdeps/s390/s390-32/dl-trampoline.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/s390/s390-32/dl-trampoline.h b/sysdeps/s390/s390-32/dl-trampoline.h index da50d9e9dc..f67a47c5d0 100644 --- a/sysdeps/s390/s390-32/dl-trampoline.h +++ b/sysdeps/s390/s390-32/dl-trampoline.h @@ -166,6 +166,7 @@ _dl_runtime_resolve: # define V29_OFF -144 # define V30_OFF -128 # define V31_OFF -112 +# define R0_OFF -88 # define R12_OFF -84 # define R14_OFF -80 # define FRAMESIZE_OFF -76 @@ -182,6 +183,8 @@ _dl_runtime_resolve: cfi_startproc .align 16 _dl_runtime_profile: + st %r0,CFA_OFF+R0_OFF(%r15) + cfi_offset (r0, R0_OFF) st %r12,CFA_OFF+R12_OFF(%r15) # r12 is used as backup of r15 cfi_offset (r12, R12_OFF) st %r14,CFA_OFF+R14_OFF(%r15) @@ -245,6 +248,7 @@ _dl_runtime_profile: cfi_def_cfa_register (15) l %r14,CFA_OFF+R14_OFF(%r15) # restore registers l %r12,CFA_OFF+R12_OFF(%r15) + l %r0,CFA_OFF+R0_OFF(%r15) br %r1 # tail call cfi_def_cfa_register (12) @@ -285,6 +289,7 @@ _dl_runtime_profile: cfi_def_cfa_register (15) l %r14,CFA_OFF+R14_OFF(%r15) # restore registers l %r12,CFA_OFF+R12_OFF(%r15) + l %r0,CFA_OFF+R0_OFF(%r15) lm %r2,%r3,CFA_OFF+RET_R2_OFF(%r15) # restore return values ld %f0,CFA_OFF+RET_F0_OFF(%r15) # ifdef RESTORE_VRS @@ -316,6 +321,7 @@ _dl_runtime_profile: # undef V29_OFF # undef V30_OFF # undef V31_OFF +# undef R0_OFF # undef R12_OFF # undef R14_OFF # undef FRAMESIZE_OFF |