From 4ce3cb5cddda7b4ee9643e1f75ee5b8f1f191906 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Mon, 6 Feb 2012 14:39:09 -0500 Subject: add support for init/finit (constructors and destructors) this is mainly in hopes of supporting c++ (not yet possible for other reasons) but will also help applications/libraries which use (and more often, abuse) the gcc __attribute__((__constructor__)) feature in "C" code. x86_64 and arm versions of the new startup asm are untested and may have minor problems. --- crt/i386/crt1.s | 8 ++++++-- crt/i386/crti.s | 7 +++++++ crt/i386/crtn.s | 5 +++++ 3 files changed, 18 insertions(+), 2 deletions(-) create mode 100644 crt/i386/crti.s create mode 100644 crt/i386/crtn.s (limited to 'crt/i386') diff --git a/crt/i386/crt1.s b/crt/i386/crt1.s index 3e88c785..66ee11ab 100644 --- a/crt/i386/crt1.s +++ b/crt/i386/crt1.s @@ -1,3 +1,5 @@ +.weak _init +.weak _fini .text .global _start _start: @@ -8,8 +10,10 @@ _start: pushl %esp pushl %esp pushl %edx - pushl %ebp - pushl %ebp + call 1f +1: addl $[_fini-.],(%esp) + call 1f +1: addl $[_init-.],(%esp) pushl %eax pushl %ecx call 1f diff --git a/crt/i386/crti.s b/crt/i386/crti.s new file mode 100644 index 00000000..2eb23ed5 --- /dev/null +++ b/crt/i386/crti.s @@ -0,0 +1,7 @@ +.section .init +.global _init +_init: + +.section .fini +.global _fini +_fini: diff --git a/crt/i386/crtn.s b/crt/i386/crtn.s new file mode 100644 index 00000000..055451ed --- /dev/null +++ b/crt/i386/crtn.s @@ -0,0 +1,5 @@ +.section .init + ret + +.section .fini + ret -- cgit v1.2.1