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S390: Use symbolic offsets for stack variables in 32-bit _dl_runtime_resolve

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Maintainability improvement.

ChangeLog:

	* sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_resolve):
	Use symbolic offsets for stack variables.
This commit is contained in:
Ilya Leoshkevich 2018-08-10 09:07:41 +02:00 committed by Stefan Liebler
parent 2813e41e90
commit c7099673aa
2 changed files with 78 additions and 36 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2018-08-10 Ilya Leoshkevich <iii@linux.ibm.com>
* sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_resolve):
Use symbolic offsets for stack variables.
2018-08-09 Joseph Myers <joseph@codesourcery.com>
* math/gen-libm-test.py: New file.

109
sysdeps/s390/s390-32/dl-trampoline.h
View File

@ -40,45 +40,66 @@
* v16 - v31 : call clobbered
*/
#define CFA_OFF 96
#define FRAME_OFF CFA_OFF + FRAME_SIZE
#define V24_OFF -224
#define V25_OFF -208
#define V26_OFF -192
#define V27_OFF -176
#define V28_OFF -160
#define V29_OFF -144
#define V30_OFF -128
#define V31_OFF -112
#define PLT1_OFF -72
#define PLT2_OFF -68
#define R2_OFF -64
#define R3_OFF -60
#define R4_OFF -56
#define R5_OFF -52
#define R14_OFF -48
#define R15_OFF -44
#define F0_OFF -40
#define F2_OFF -32
.globl _dl_runtime_resolve
.type _dl_runtime_resolve, @function
cfi_startproc
.align 16
_dl_runtime_resolve:
stm %r2,%r5,32(%r15) # save registers
cfi_offset (r2, -64)
cfi_offset (r3, -60)
cfi_offset (r4, -56)
cfi_offset (r5, -52)
stm %r14,%r15,48(%r15)
cfi_offset (r14, -48)
cfi_offset (r15, -44)
std %f0,56(%r15)
cfi_offset (f0, -40)
std %f2,64(%r15)
cfi_offset (f2, -32)
stm %r2,%r5,CFA_OFF+R2_OFF(%r15) # save registers
cfi_offset (r2, R2_OFF)
cfi_offset (r3, R3_OFF)
cfi_offset (r4, R4_OFF)
cfi_offset (r5, R5_OFF)
stm %r14,%r15,CFA_OFF+R14_OFF(%r15)
cfi_offset (r14, R14_OFF)
cfi_offset (r15, R15_OFF)
std %f0,CFA_OFF+F0_OFF(%r15)
cfi_offset (f0, F0_OFF)
std %f2,CFA_OFF+F2_OFF(%r15)
cfi_offset (f2, F2_OFF)
lr %r0,%r15
lm %r2,%r3,24(%r15) # load args saved by PLT
lm %r2,%r3,CFA_OFF+PLT1_OFF(%r15) # load args saved by PLT
#ifdef RESTORE_VRS
ahi %r15,-224 # create stack frame
cfi_adjust_cfa_offset (224)
# define FRAME_SIZE (CFA_OFF + 128)
ahi %r15,-FRAME_SIZE # create stack frame
cfi_adjust_cfa_offset (FRAME_SIZE)
.machine push
.machine "z13"
.machinemode "zarch_nohighgprs"
vstm %v24,%v31,96(%r15) # store call-clobbered vr arguments
cfi_offset (v24, -224)
cfi_offset (v25, -208)
cfi_offset (v26, -192)
cfi_offset (v27, -176)
cfi_offset (v28, -160)
cfi_offset (v29, -144)
cfi_offset (v30, -128)
cfi_offset (v31, -112)
vstm %v24,%v31,FRAME_OFF+V24_OFF(%r15) # save call-clobbered vr args
cfi_offset (v24, V24_OFF)
cfi_offset (v25, V25_OFF)
cfi_offset (v26, V26_OFF)
cfi_offset (v27, V27_OFF)
cfi_offset (v28, V28_OFF)
cfi_offset (v29, V29_OFF)
cfi_offset (v30, V30_OFF)
cfi_offset (v31, V31_OFF)
.machine pop
#else
ahi %r15,-96 # create stack frame
cfi_adjust_cfa_offset (96)
# define FRAME_SIZE CFA_OFF
ahi %r15,-FRAME_SIZE # create stack frame
cfi_adjust_cfa_offset (FRAME_SIZE)
#endif
st %r0,0(%r15) # write backchain
basr %r1,0
@ -89,21 +110,37 @@ _dl_runtime_resolve:
.machine push
.machine "z13"
.machinemode "zarch_nohighgprs"
vlm %v24,%v31,96(%r15) # restore vector registers
vlm %v24,%v31,FRAME_OFF+V24_OFF(%r15) # restore vector registers
.machine pop
lm %r14,%r15,272(%r15)# remove stack frame and restore registers
#else
lm %r14,%r15,144(%r15)# remove stack frame and restore registers
#endif
cfi_def_cfa_offset (96)
ld %f0,56(%r15)
ld %f2,64(%r15)
lm %r2,%r5,32(%r15)
lm %r14,%r15,FRAME_OFF+R14_OFF(%r15) # restore frame and registers
#undef FRAME_SIZE
cfi_def_cfa_offset (CFA_OFF)
ld %f0,CFA_OFF+F0_OFF(%r15)
ld %f2,CFA_OFF+F2_OFF(%r15)
lm %r2,%r5,CFA_OFF+R2_OFF(%r15)
br %r1
1: .long _dl_fixup - 0b
cfi_endproc
.size _dl_runtime_resolve, .-_dl_runtime_resolve
#undef V24_OFF
#undef V25_OFF
#undef V26_OFF
#undef V27_OFF
#undef V28_OFF
#undef V29_OFF
#undef V30_OFF
#undef V31_OFF
#undef PLT1_OFF
#undef PLT2_OFF
#undef R2_OFF
#undef R3_OFF
#undef R4_OFF
#undef R5_OFF
#undef R14_OFF
#undef R15_OFF
#undef F0_OFF
#undef F2_OFF
#ifndef PROF
.globl _dl_runtime_profile