search for: __ctors_end

> On 06/08/2014 02:58 PM, Ady wrote: > >> > >> To be clear, I am not saying there is no bug - there might be. > >> > > > > I performed the following test with several versions of Syslinux: > > > > 1_ Execute: > > 'extlinux --once=non_default_label --install /mnt/sda1' ; > > 2_ In first reboot, the

...; Info: Symbol __dtors_start is defined more than once > Info: Symbol dev_null_r is defined more than once > Info: Symbol __ashldi3 is defined more than once > Info: Symbol __udivdi3 is defined more than once > Info: Symbol __syslinux_adv_size is defined more than once > Info: Symbol __ctors_end is defined more than once > Info: Symbol __ctors_start is defined more than once > And, indeed, so it was. Someone wants to help chase down the reasons for the additional duplicate symbols? -hpa

....; *(.rodata) *(.rodata.*) __rodata_end = .; } - . = ALIGN(4); - - __ctors_vma = .; - __ctors_lma = __ctors_vma + __text_lma - __text_vma; - .ctors : AT(__ctors_lma) { + .ctors : AT(ADDR(.ctors) + __vma_to_lma) { __ctors_start = .; KEEP (*(SORT(.ctors.*))) KEEP (*(.ctors)) __ctors_end = .; } - __dtors_vma = .; - __dtors_lma = __dtors_vma + __text_lma - __text_vma; - .dtors : AT(__dtors_lma) { + .dtors : AT(ADDR(.dtors) + __vma_to_lma) { __dtors_start = .; KEEP (*(SORT(.dtors.*))) KEEP (*(.dtors)) __dtors_end = .; } - . = ALIGN(4); - - __dynsym_vma = .; - __dy...

...DEN(__rodata_end = .); - } - - . = ALIGN(4); - - HIDDEN(__ctors_vma = .); - HIDDEN(__ctors_lma = __ctors_vma + __text_lma - __text_vma); - .ctors : AT(__ctors_lma) { - HIDDEN(__ctors_start = .); - KEEP (*(SORT(.preinit_array*))) - KEEP (*(SORT(.init_array*))) - KEEP (*(SORT(.ctors*))) - HIDDEN(__ctors_end = .); - } - - HIDDEN(__dtors_vma = .); - HIDDEN(__dtors_lma = __dtors_vma + __text_lma - __text_vma); - .dtors : AT(__dtors_lma) { - HIDDEN(__dtors_start = .); - KEEP (*(SORT(.fini_array*))) - KEEP (*(SORT(.dtors*))) - HIDDEN(__dtors_end = .); - } - - . = ALIGN(4); - - HIDDEN(__dynsym_vma = .);...

From: Sylvain Gault <sylvain.gault at gmail.com> TL;DR: The section aligment in linker scripts messed-up the memory mapping needed for the compression / decompression to work. The bug with gcc 5 is not trivial, I'll do my best to explain it here. Basically, there are two memory mappings of the code. One in "virtual memory", and one in "load memory". The one in

From: Sylvain Gault <sylvain.gault at gmail.com> These patches basically remove unused linker scripts and port a change that was made to an unused script. Those are to be applied on top of the gcc 5 bug fixes as they would conflict otherwise. Sylvain Gault (4): diag/mbr: fix dependency to linker script Remove unused linker scripts core: Make symbols defined in linker script HIDDEN

...gt; extern char _data[], _sdata[], _edata[]; > extern char __bss_start[], __bss_stop[]; > @@ -46,6 +49,9 @@ extern char __softirqentry_text_start[], __softirqentry_text_end[]; > > /* Start and end of .ctors section - used for constructor calls. */ > extern char __ctors_start[], __ctors_end[]; > +#ifdef CONFIG_DEFAULT_HIDDEN > +#pragma GCC visibility pop > +#endif > > extern __visible const void __nosave_begin, __nosave_end; > > diff --git a/include/linux/compiler.h b/include/linux/compiler.h > index e95a2631e545..6997716f73bf 100644 > --- a/include/lin...

...gt; extern char _data[], _sdata[], _edata[]; > extern char __bss_start[], __bss_stop[]; > @@ -46,6 +49,9 @@ extern char __softirqentry_text_start[], __softirqentry_text_end[]; > > /* Start and end of .ctors section - used for constructor calls. */ > extern char __ctors_start[], __ctors_end[]; > +#ifdef CONFIG_DEFAULT_HIDDEN > +#pragma GCC visibility pop > +#endif > > extern __visible const void __nosave_begin, __nosave_end; > > diff --git a/include/linux/compiler.h b/include/linux/compiler.h > index e95a2631e545..6997716f73bf 100644 > --- a/include/lin...

...here's the output of my attmept: #ld com32io.o dtimenu.o syslnx.o tui.o --library-path=./ -lcom32 .//libcom32.a(entry.o)(.init+0x42): In function `_start': sys/entry.S:68: undefined reference to `__ctors_start' .//libcom32.a(entry.o)(.init+0x48):sys/entry.S:70: undefined reference to `__ctors_end' .//libcom32.a(exit.o)(.text+0x2): In function `_exit': sys/exit.S:14: undefined reference to `__dtors_start' .//libcom32.a(exit.o)(.text+0x8):sys/exit.S:16: undefined reference to `__dtors_end' I'm sorry if this is extremely newbie, but I could really use some help. -- Hunte...

...is defined more than once Info: Symbol __dtors_start is defined more than once Info: Symbol dev_null_r is defined more than once Info: Symbol __ashldi3 is defined more than once Info: Symbol __udivdi3 is defined more than once Info: Symbol __syslinux_adv_size is defined more than once Info: Symbol __ctors_end is defined more than once Info: Symbol __ctors_start is defined more than once -hpa

...art is defined more than once > > Info: Symbol dev_null_r is defined more than once > > Info: Symbol __ashldi3 is defined more than once > > Info: Symbol __udivdi3 is defined more than once > > Info: Symbol __syslinux_adv_size is defined more than once > > Info: Symbol __ctors_end is defined more than once > > Info: Symbol __ctors_start is defined more than once > > > > And, indeed, so it was. Someone wants to help chase down the reasons > for the additional duplicate symbols? > > -hpa > Correct me when I wrong, but I think it is meanwhil...

...- { - KEEP (*(.fini_array)) - KEEP (*(SORT(.fini_array.*))) - } - .ctors : { __ctors_start = .; @@ -93,6 +82,8 @@ SECTIONS KEEP (*(.ctors)) KEEP (*(.ctors_modinit)) KEEP (*(.ctors_modmain)) + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) __ctors_end = .; } @@ -102,6 +93,8 @@ SECTIONS KEEP (*(SORT(.dtors.*))) KEEP (*(.dtors)) KEEP (*(.dtors_modexit)) + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) __dtors_end = .; } diff --git a/com32/lib/init.h b/com32/lib/init.h deleted file mode 100644 index 2d9...

...data[], _sdata[], _edata[]; >> extern char __bss_start[], __bss_stop[]; >> @@ -46,6 +49,9 @@ extern char __softirqentry_text_start[], __softirqentry_text_end[]; >> >> /* Start and end of .ctors section - used for constructor calls. */ >> extern char __ctors_start[], __ctors_end[]; >> +#ifdef CONFIG_DEFAULT_HIDDEN >> +#pragma GCC visibility pop >> +#endif >> >> extern __visible const void __nosave_begin, __nosave_end; >> >> diff --git a/include/linux/compiler.h b/include/linux/compiler.h >> index e95a2631e545..6997716f73bf 1...

..._text[], _stext[], _etext[]; extern char _data[], _sdata[], _edata[]; extern char __bss_start[], __bss_stop[]; @@ -46,6 +49,9 @@ extern char __softirqentry_text_start[], __softirqentry_text_end[]; /* Start and end of .ctors section - used for constructor calls. */ extern char __ctors_start[], __ctors_end[]; +#ifdef CONFIG_DEFAULT_HIDDEN +#pragma GCC visibility pop +#endif extern __visible const void __nosave_begin, __nosave_end; diff --git a/include/linux/compiler.h b/include/linux/compiler.h index e95a2631e545..6997716f73bf 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h...

...ata) diff --git a/core/elflink/load_env32.c b/core/elflink/load_env32.c index 28bc70c..b15cdbb 100644 --- a/core/elflink/load_env32.c +++ b/core/elflink/load_env32.c @@ -24,9 +24,6 @@ #define LDLINUX "ldlinux.c32" -typedef void (*constructor_t) (void); -constructor_t __ctors_start[], __ctors_end[]; - extern char __dynstr_start[]; extern char __dynstr_len[], __dynsym_len[]; extern char __dynsym_start[]; @@ -62,15 +59,6 @@ void init_module_subsystem(struct elf_module *module) list_add(&module->list, &modules_head); } -/* call_constr: initializes sme things related */ -s...

From: Matt Fleming <matt.fleming at intel.com> Here are the patches that I've got queued up based on the very helpful feedback I received from people testing Syslinux 5.00-pre9. Unless anyone has any concerns these will make it into Syslinux 5.00-pre10. Matt Fleming (9): pxe: Don't call open_config() from the pxe core ldlinux: Print a warning if no config file is found

From: Matt Fleming <matt.fleming at intel.com> The following patch series is available at, git://git.zytor.com/users/mfleming/syslinux.git elflink All patches are against the 'elflink' branch. This series fixes a few serious bugs and some behavioural incompatibilities with the 4.x series. Matt Fleming (19): ldlinux: Initialise 'p' before using it. ldlinux: Parse

Changes: - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce dynamic relocation space on mapped memory. It also simplifies the relocation process. - Move the start the module section next to the kernel. Remove the need for -mcmodel=large on modules. Extends

Changes: - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce dynamic relocation space on mapped memory. It also simplifies the relocation process. - Move the start the module section next to the kernel. Remove the need for -mcmodel=large on modules. Extends

Changes: - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce