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S390: Use symbolic offsets for stack variables in 64-bit _dl_runtime_resolve
Maintainability improvement. ChangeLog: * sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_resolve): Use symbolic offsets for stack variables.
This commit is contained in:
Ilya Leoshkevich
Stefan Liebler
parent
6954059ad6
commit
0fb7afa2f9
@ -1,3 +1,8 @@
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2018-08-10 Ilya Leoshkevich <iii@linux.ibm.com>
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* sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_resolve):
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Use symbolic offsets for stack variables.
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2018-08-10 Ilya Leoshkevich <iii@linux.ibm.com>
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* sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_profile):
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@ -37,47 +37,71 @@
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* v16 - v31 : call clobbered
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*/
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#define CFA_OFF 160
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#define FRAME_OFF CFA_OFF + FRAME_SIZE
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#define V24_OFF -288
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#define V25_OFF -272
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#define V26_OFF -256
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#define V27_OFF -240
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#define V28_OFF -224
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#define V29_OFF -208
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#define V30_OFF -192
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#define V31_OFF -176
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#define PLT1_OFF -112
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#define PLT2_OFF -104
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#define R2_OFF -96
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#define R3_OFF -88
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#define R4_OFF -80
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#define R5_OFF -72
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#define R14_OFF -64
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#define R15_OFF -56
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#define F0_OFF -48
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#define F2_OFF -40
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#define F4_OFF -32
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#define F6_OFF -24
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.globl _dl_runtime_resolve
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.type _dl_runtime_resolve, @function
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cfi_startproc
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.align 16
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_dl_runtime_resolve:
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stmg %r2,%r5,64(%r15) # save call-clobbered argument registers
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cfi_offset (r2, -96)
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cfi_offset (r3, -88)
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cfi_offset (r4, -80)
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cfi_offset (r5, -72)
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stmg %r14,%r15,96(%r15)
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cfi_offset (r14, -64)
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cfi_offset (r15, -56)
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std %f0,112(%r15)
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cfi_offset (f0, -48)
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std %f2,120(%r15)
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cfi_offset (f2, -40)
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std %f4,128(%r15)
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cfi_offset (f4, -32)
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std %f6,136(%r15)
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cfi_offset (f6, -24)
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lmg %r2,%r3,48(%r15) # load args for fixup saved by PLT
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stmg %r2,%r5,CFA_OFF+R2_OFF(%r15) # save registers
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cfi_offset (r2, R2_OFF)
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cfi_offset (r3, R3_OFF)
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cfi_offset (r4, R4_OFF)
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cfi_offset (r5, R5_OFF)
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stmg %r14,%r15,CFA_OFF+R14_OFF(%r15)
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cfi_offset (r14, R14_OFF)
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cfi_offset (r15, R15_OFF)
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std %f0,CFA_OFF+F0_OFF(%r15)
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cfi_offset (f0, F0_OFF)
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std %f2,CFA_OFF+F2_OFF(%r15)
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cfi_offset (f2, F2_OFF)
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std %f4,CFA_OFF+F4_OFF(%r15)
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cfi_offset (f4, F4_OFF)
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std %f6,CFA_OFF+F6_OFF(%r15)
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cfi_offset (f6, F6_OFF)
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lmg %r2,%r3,CFA_OFF+PLT1_OFF(%r15) # load args saved by PLT
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lgr %r0,%r15
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#ifdef RESTORE_VRS
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aghi %r15,-288 # create stack frame
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cfi_adjust_cfa_offset (288)
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# define FRAME_SIZE (CFA_OFF + 128)
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aghi %r15,-FRAME_SIZE # create stack frame
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cfi_adjust_cfa_offset (FRAME_SIZE)
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.machine push
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.machine "z13"
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vstm %v24,%v31,160(%r15)# store call-clobbered vector argument registers
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cfi_offset (v24, -288)
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cfi_offset (v25, -272)
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cfi_offset (v26, -256)
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cfi_offset (v27, -240)
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cfi_offset (v28, -224)
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cfi_offset (v29, -208)
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cfi_offset (v30, -192)
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cfi_offset (v31, -176)
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vstm %v24,%v31,FRAME_OFF+V24_OFF(%r15) # save call-clobbered vr args
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cfi_offset (v24, V24_OFF)
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cfi_offset (v25, V25_OFF)
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cfi_offset (v26, V26_OFF)
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cfi_offset (v27, V27_OFF)
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cfi_offset (v28, V28_OFF)
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cfi_offset (v29, V29_OFF)
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cfi_offset (v30, V30_OFF)
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cfi_offset (v31, V31_OFF)
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.machine pop
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#else
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aghi %r15,-160 # create stack frame
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cfi_adjust_cfa_offset (160)
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# define FRAME_SIZE CFA_OFF
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aghi %r15,-FRAME_SIZE # create stack frame
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cfi_adjust_cfa_offset (FRAME_SIZE)
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#endif
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stg %r0,0(%r15) # write backchain
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brasl %r14,_dl_fixup # call _dl_fixup
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@ -85,22 +109,40 @@ _dl_runtime_resolve:
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#ifdef RESTORE_VRS
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.machine push
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.machine "z13"
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vlm %v24,%v31,160(%r15)# restore vector registers
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vlm %v24,%v31,FRAME_OFF+V24_OFF(%r15) # restore vector registers
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.machine pop
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lmg %r14,%r15,384(%r15)# remove stack frame and restore registers
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#else
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lmg %r14,%r15,256(%r15)# remove stack frame and restore registers
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#endif
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cfi_def_cfa_offset (160)
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ld %f0,112(%r15)
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ld %f2,120(%r15)
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ld %f4,128(%r15)
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ld %f6,136(%r15)
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lmg %r2,%r5,64(%r15)
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lmg %r14,%r15,FRAME_OFF+R14_OFF(%r15) # restore frame and registers
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#undef FRAME_SIZE
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cfi_def_cfa_offset (CFA_OFF)
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ld %f0,CFA_OFF+F0_OFF(%r15)
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ld %f2,CFA_OFF+F2_OFF(%r15)
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ld %f4,CFA_OFF+F4_OFF(%r15)
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ld %f6,CFA_OFF+F6_OFF(%r15)
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lmg %r2,%r5,CFA_OFF+R2_OFF(%r15)
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br %r1
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cfi_endproc
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.size _dl_runtime_resolve, .-_dl_runtime_resolve
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#undef V24_OFF
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#undef V25_OFF
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#undef V26_OFF
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#undef V27_OFF
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#undef V28_OFF
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#undef V29_OFF
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#undef V30_OFF
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#undef V31_OFF
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#undef PLT1_OFF
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#undef PLT2_OFF
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#undef R2_OFF
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#undef R3_OFF
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#undef R4_OFF
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#undef R5_OFF
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#undef R14_OFF
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#undef R15_OFF
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#undef F0_OFF
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#undef F2_OFF
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#undef F4_OFF
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#undef F6_OFF
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#ifndef PROF
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.globl _dl_runtime_profile
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