diff options
Diffstat (limited to 'contrib/gcc/config/alpha/crtbegin.asm')
| -rw-r--r-- | contrib/gcc/config/alpha/crtbegin.asm | 89 |
1 files changed, 85 insertions, 4 deletions
diff --git a/contrib/gcc/config/alpha/crtbegin.asm b/contrib/gcc/config/alpha/crtbegin.asm index c28440d..f954f1a 100644 --- a/contrib/gcc/config/alpha/crtbegin.asm +++ b/contrib/gcc/config/alpha/crtbegin.asm @@ -50,6 +50,8 @@ __CTOR_LIST__: __DTOR_LIST__: .quad -1 +.section .eh_frame,"aw" +__EH_FRAME_BEGIN__: # # Fragment of the ELF _fini routine that invokes our dtor cleanup. @@ -67,18 +69,33 @@ __DTOR_LIST__: 1: ldgp $29,0($29) jsr $26,__do_global_dtors_aux + # Ideally this call would go in crtend.o, except that we can't + # get hold of __EH_FRAME_BEGIN__ there. + + jsr $26,__do_frame_takedown + # Must match the alignment we got from crti.o else we get # zero-filled holes in our _fini function and then SIGILL. .align 3 # + # Fragment of the ELF _init routine that sets up the frame info. + # + +.section .init,"ax" + br $29,1f +1: ldgp $29,0($29) + jsr $26,__do_frame_setup + .align 3 + + # # Invoke our destructors in order. # .data # Support recursive calls to exit. -9: .quad __DTOR_LIST__ +$ptr: .quad __DTOR_LIST__ .text @@ -86,15 +103,14 @@ __DTOR_LIST__: .ent __do_global_dtors_aux __do_global_dtors_aux: - ldgp $29,0($27) lda $30,-16($30) .frame $30,16,$26,0 stq $9,8($30) stq $26,0($30) .mask 0x4000200,-16 - .prologue 1 + .prologue 0 - lda $9,9b + lda $9,$ptr br 1f 0: stq $1,0($9) jsr $26,($27) @@ -109,3 +125,68 @@ __do_global_dtors_aux: ret .end __do_global_dtors_aux + + # + # Install our frame info. + # + + # ??? How can we rationally keep this size correct? + +.section .bss + .type $object,@object + .align 3 +$object: + .zero 48 + .size $object, 48 + +.text + + .align 3 + .ent __do_frame_setup + +__do_frame_setup: + ldgp $29,0($27) + lda $30,-16($30) + .frame $30,16,$26,0 + stq $26,0($30) + .mask 0x4000000,-16 + .prologue 1 + + lda $1,__register_frame_info + beq $1,0f + lda $16,__EH_FRAME_BEGIN__ + lda $17,$object + jsr $26,__register_frame_info + ldq $26,0($30) +0: lda $30,16($30) + ret + + .end __do_frame_setup + + # + # Remove our frame info. + # + + .align 3 + .ent __do_frame_takedown + +__do_frame_takedown: + ldgp $29,0($27) + lda $30,-16($30) + .frame $30,16,$26,0 + stq $26,0($30) + .mask 0x4000000,-16 + .prologue 1 + + lda $1,__deregister_frame_info + beq $1,0f + lda $16,__EH_FRAME_BEGIN__ + jsr $26,__deregister_frame_info + ldq $26,0($30) +0: lda $30,16($30) + ret + + .end __do_frame_takedown + +.weak __register_frame_info +.weak __deregister_frame_info |
