diff options
Diffstat (limited to 'libexec/rtld-elf/ia64/rtld_start.S')
| -rw-r--r-- | libexec/rtld-elf/ia64/rtld_start.S | 96 |
1 files changed, 21 insertions, 75 deletions
diff --git a/libexec/rtld-elf/ia64/rtld_start.S b/libexec/rtld-elf/ia64/rtld_start.S index b4408c6..1585207 100644 --- a/libexec/rtld-elf/ia64/rtld_start.S +++ b/libexec/rtld-elf/ia64/rtld_start.S @@ -50,7 +50,7 @@ ENTRY(_rtld_start, 0) ;; sub out0=r14,r15 // out0 is image base address br.call.sptk.many rp=_rtld_reloc // fixup image - + add sp=-16,sp // 16 bytes for us, 16 for _rtld ;; mov out0=in0 @@ -60,7 +60,7 @@ ENTRY(_rtld_start, 0) br.call.sptk.many rp=_rtld // r8=_rtld(sp, &exit_proc, &obj_main) add r16=16,sp // address for exit proc - ;; + ;; ld8 r15=[r16] // read exit proc add sp=16,sp // readjust stack mov b7=r8 // address of real _start @@ -106,12 +106,12 @@ ENTRY(_rtld_bind_start, 0) stf.spill [r17]=f10,32 stf.spill [r18]=f11,32 mov out0=r16 // Obj_Entry for caller - ;; + ;; } { .mmi stf.spill [r17]=f12,32 stf.spill [r18]=f13,32 shladd out1=r15,3,out1 // rela offset = 24 * index - ;; + ;; } { .mmb stf.spill [r17]=f14,32 stf.spill [r18]=f15,32 @@ -125,21 +125,21 @@ ENTRY(_rtld_bind_start, 0) ld8 r1=[r8] // target gp mov ar.pfs=loc0 // clean up mov rp=loc1 -} { .mmi +} { .mmi ldf.fill f8=[r17],32 // restore float arguments ldf.fill f9=[r18],32 mov r8=loc2 // restore structure pointer - ;; + ;; } { .mmi ldf.fill f10=[r17],32 ldf.fill f11=[r18],32 mov r9=loc3 - ;; + ;; } { .mmi ldf.fill f12=[r17],32 ldf.fill f13=[r18],32 mov r10=loc4 - ;; + ;; } { .mmi ldf.fill f14=[r17],32 ldf.fill f15=[r18],32 @@ -157,69 +157,15 @@ ENTRY(_rtld_bind_start, 0) } END(_rtld_bind_start) -/* - * int cmp0_and_store_int(volatile int *p, int newval); - * - * If an int holds 0, store newval into it; else do nothing. Returns - * the previous value. - */ -ENTRY(cmp0_and_store_int, 2) - mov ar.ccv=0 - ;; - cmpxchg4.acq r8=[in0],in1,ar.ccv - br.ret.sptk.many rp -END(cmp0_and_store_int) - -ENTRY(atomic_add_int, 2) -1: ld4 r14=[in0] - ;; - mov ar.ccv=r14 - add r15=in1,r14 - ;; - cmpxchg4.acq r16=[in0],r15,ar.ccv - ;; - cmp.ne p6,p0=r14,r16 -(p6) br.cond.spnt.few 1b - br.ret.sptk.many rp -END(atomic_add_int) - -/* Atomically increment an int. */ -ENTRY(atomic_incr_int, 1) -1: ld4 r14=[in0] - ;; - mov ar.ccv=r14 - add r15=1,r14 - ;; - cmpxchg4.acq r16=[in0],r15,ar.ccv - ;; - cmp.ne p6,p0=r14,r16 -(p6) br.cond.spnt.few 1b - br.ret.sptk.many rp -END(atomic_incr_int) - -/* Atomically decrement an int. */ -ENTRY(atomic_decr_int, 1) -1: ld4 r14=[in0] - ;; - mov ar.ccv=r14 - add r15=-1,r14 - ;; - cmpxchg4.acq r16=[in0],r15,ar.ccv - ;; - cmp.ne p6,p0=r14,r16 -(p6) br.cond.spnt.few 1b - br.ret.sptk.many rp -END(atomic_decr_int) - #define DT_NULL 0 /* Terminating entry. */ #define DT_RELA 7 /* Address of ElfNN_Rela relocations. */ #define DT_RELASZ 8 /* Total size of ElfNN_Rela relocations. */ #define DT_RELAENT 9 /* Size of each ElfNN_Rela relocation entry. */ - + #define R_IA64_NONE 0 /* None */ #define R_IA64_DIR64LSB 0x27 /* word64 LSB S + A */ #define R_IA64_REL64LSB 0x6f /* word64 LSB BD + A */ - + /* * _rtld_reloc: relocate the rtld image, apart from @fptrs. * @@ -233,7 +179,7 @@ END(atomic_decr_int) STATIC_ENTRY(_rtld_reloc, 1) alloc loc0=ar.pfs,1,2,0,0 mov loc1=rp - ;; + ;; movl r15=@gprel(_DYNAMIC) // find _DYNAMIC etc. ;; add r15=r15,gp // relocate _DYNAMIC etc. @@ -244,24 +190,24 @@ STATIC_ENTRY(_rtld_reloc, 1) ;; cmp.eq p6,p0=DT_NULL,r16 // done? (p6) br.cond.dpnt.few 2f - ;; + ;; cmp.eq p6,p0=DT_RELA,r16 - ;; + ;; (p6) add r18=r17,in0 // found rela section - ;; + ;; cmp.eq p6,p0=DT_RELASZ,r16 - ;; + ;; (p6) mov r19=r17 // found rela size - ;; + ;; cmp.eq p6,p0=DT_RELAENT,r16 - ;; + ;; (p6) mov r22=r17 // found rela entry size ;; br.sptk.few 1b - -2: + +2: ld8 r15=[r18],8 // read r_offset - ;; + ;; ld8 r16=[r18],8 // read r_info add r15=r15,in0 // relocate r_offset ;; @@ -284,7 +230,7 @@ STATIC_ENTRY(_rtld_reloc, 1) 3: cmp.ltu p6,p0=0,r19 // more? (p6) br.cond.dptk.few 2b // loop - + mov r8=0 // success return value ;; br.cond.sptk.few 9f // done |
