diff options
Diffstat (limited to 'sysdeps/s390/s390-32/dl-trampoline.h')
| -rw-r--r-- | sysdeps/s390/s390-32/dl-trampoline.h | 76 |
1 files changed, 46 insertions, 30 deletions
diff --git a/sysdeps/s390/s390-32/dl-trampoline.h b/sysdeps/s390/s390-32/dl-trampoline.h index 562756727d..086449f0f2 100644 --- a/sysdeps/s390/s390-32/dl-trampoline.h +++ b/sysdeps/s390/s390-32/dl-trampoline.h @@ -112,28 +112,31 @@ _dl_runtime_resolve: cfi_startproc .align 16 _dl_runtime_profile: - stm %r2,%r6,32(%r15) # save registers - cfi_offset (r2, -64) # + r6 needed as arg for - cfi_offset (r3, -60) # _dl_profile_fixup - cfi_offset (r4, -56) - cfi_offset (r5, -52) - cfi_offset (r6, -48) - std %f0,56(%r15) - cfi_offset (f0, -40) - std %f2,64(%r15) - cfi_offset (f2, -32) st %r12,12(%r15) # r12 is used as backup of r15 cfi_offset (r12, -84) st %r14,16(%r15) cfi_offset (r14, -80) lr %r12,%r15 # backup stack pointer cfi_def_cfa_register (12) + ahi %r15,-264 # create stack frame: + # 96 + sizeof(La_s390_32_regs) + st %r12,0(%r15) # save backchain + + stm %r2,%r6,96(%r15) # save registers + cfi_offset (r2, -264) # + r6 needed as arg for + cfi_offset (r3, -260) # _dl_profile_fixup + cfi_offset (r4, -256) + cfi_offset (r5, -252) + cfi_offset (r6, -248) + std %f0,120(%r15) + cfi_offset (f0, -240) + std %f2,128(%r15) + cfi_offset (f2, -232) #ifdef RESTORE_VRS - ahi %r15,-224 # create stack frame .machine push .machine "z13" .machinemode "zarch_nohighgprs" - vstm %v24,%v31,96(%r15) # store call-clobbered vr arguments + vstm %v24,%v31,136(%r15) # store call-clobbered vr arguments cfi_offset (v24, -224) cfi_offset (v25, -208) cfi_offset (v26, -192) @@ -143,31 +146,31 @@ _dl_runtime_profile: cfi_offset (v30, -128) cfi_offset (v31, -112) .machine pop -#else - ahi %r15,-96 # create stack frame #endif - st %r12,0(%r15) # save backchain + lm %r2,%r3,24(%r12) # load arguments saved by PLT lr %r4,%r14 # return address as third parameter basr %r1,0 0: l %r14,6f-0b(%r1) - la %r5,32(%r12) # pointer to struct La_s390_32_regs + la %r5,96(%r15) # pointer to struct La_s390_32_regs la %r6,20(%r12) # long int * framesize bas %r14,0(%r14,%r1) # call resolver lr %r1,%r2 # function addr returned in r2 - ld %f0,56(%r12) # restore call-clobbered arg fprs - ld %f2,64(%r12) + ld %f0,120(%r15) # restore call-clobbered arg fprs + ld %f2,128(%r15) #ifdef RESTORE_VRS .machine push .machine "z13" .machinemode "zarch_nohighgprs" - vlm %v24,%v31,96(%r15) # restore call-clobbered arg vrs + vlm %v24,%v31,136(%r15) # restore call-clobbered arg vrs .machine pop #endif icm %r0,15,20(%r12) # load & test framesize jnm 2f - lm %r2,%r6,32(%r12) + lm %r2,%r6,96(%r15) # framesize < 0 means no pltexit call + # so we can do a tail call without + # copying the arg overflow area lr %r15,%r12 # remove stack frame cfi_def_cfa_register (15) l %r14,16(%r15) # restore registers @@ -175,7 +178,9 @@ _dl_runtime_profile: br %r1 # tail-call to the resolved function cfi_def_cfa_register (12) -2: jz 4f # framesize == 0 ? +2: la %r4,96(%r15) # pointer to struct La_s390_32_regs + st %r4,32(%r12) + jz 4f # framesize == 0 ? ahi %r0,7 # align framesize to 8 lhi %r2,-8 nr %r0,%r2 @@ -188,24 +193,35 @@ _dl_runtime_profile: la %r2,8(%r2) la %r3,8(%r3) brct %r0,3b -4: lm %r2,%r6,32(%r12) # load register parameters +4: lm %r2,%r6,0(%r4) # load register parameters basr %r14,%r1 # call resolved function - stm %r2,%r3,72(%r12) # store return values r2, r3, f0 - std %f0,80(%r12) # to struct La_s390_32_retval - lm %r2,%r3,24(%r12) # load arguments saved by PLT + stm %r2,%r3,40(%r12) # store return values r2, r3, f0 + std %f0,48(%r12) # to struct La_s390_32_retval +#ifdef RESTORE_VRS + .machine push + .machine "z13" + vst %v24,56(%r12) # store return value v24 + .machine pop +#endif + lm %r2,%r4,24(%r12) # r2, r3: load arguments saved by PLT + # r4: pointer to struct La_s390_32_regs basr %r1,0 5: l %r14,7f-5b(%r1) - la %r4,32(%r12) # pointer to struct La_s390_32_regs - la %r5,72(%r12) # pointer to struct La_s390_32_retval + la %r5,40(%r12) # pointer to struct La_s390_32_retval bas %r14,0(%r14,%r1) # call _dl_call_pltexit lr %r15,%r12 # remove stack frame cfi_def_cfa_register (15) l %r14,16(%r15) # restore registers l %r12,12(%r15) - l %r2,72(%r15) # restore return values - l %r3,76(%r15) - ld %f0,80(%r15) + lm %r2,%r3,40(%r15) # restore return values + ld %f0,48(%r15) +#ifdef RESTORE_VRS + .machine push + .machine "z13" + vl %v24,56(%r15) # restore return value v24 + .machine pop +#endif br %r14 6: .long _dl_profile_fixup - 0b |