Florian Weimer 035c012e32 Reduce the statically linked startup code [BZ #23323] ... It turns out the startup code in csu/elf-init.c has a perfect pair of ROP gadgets (see Marco-Gisbert and Ripoll-Ripoll, "return-to-csu: A New Method to Bypass 64-bit Linux ASLR"). These functions are not needed in dynamically-linked binaries because DT_INIT/DT_INIT_ARRAY are already processed by the dynamic linker. However, the dynamic linker skipped the main program for some reason. For maximum backwards compatibility, this is not changed, and instead, the main map is consulted from __libc_start_main if the init function argument is a NULL pointer. For statically linked binaries, the old approach based on linker symbols is still used because there is nothing else available. A new symbol version __libc_start_main@@GLIBC_2.34 is introduced because new binaries running on an old libc would not run their ELF constructors, leading to difficult-to-debug issues.		2021-02-25 12:13:02 +01:00
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bits	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
nofpu	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
nptl	nptl: Move lowlevellock into libc [BZ #15648]	2021-02-22 18:30:52 +01:00
rv32	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
rv64	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
rvd	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
rvf	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sys	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
__longjmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
bsd-_setjmp.c	RISC-V: ABI Implementation	2018-01-29 10:25:29 -08:00
bsd-setjmp.c	RISC-V: ABI Implementation	2018-01-29 10:25:29 -08:00
configure	RISC-V: Build Infastructure	2018-01-29 10:43:15 -08:00
configure.ac	RISC-V: Build Infastructure	2018-01-29 10:43:15 -08:00
dl-irel.h	riscv: support GNU indirect function	2021-01-10 21:25:13 -05:00
dl-machine.h	riscv: Initialize $gp before resolving the IRELATIVE relocation	2021-01-10 21:25:16 -05:00
dl-tls.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
dl-trampoline.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
e_sqrtl.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
fpu_control.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
gccframe.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Implies	Introduce <elf-initfini.h> and ELF_INITFINI for all architectures	2020-02-18 15:12:25 +01:00
jmpbuf-offsets.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
jmpbuf-unwind.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ldsodefs.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
libc-tls.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
linkmap.h	RISC-V: ABI Implementation	2018-01-29 10:25:29 -08:00
machine-gmon.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile	RISC-V: Build Infastructure	2018-01-29 10:43:15 -08:00
math-tests-snan-payload.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
math-tests-trap.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memusage.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
preconfigure	RISC-V: Build infrastructure for 32-bit port	2020-08-27 08:17:43 -07:00
setjmp.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sfp-machine.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sotruss-lib.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stackinfo.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
start.S	Reduce the statically linked startup code [BZ #23323]	2021-02-25 12:13:02 +01:00
tininess.h	RISC-V: Generic <math.h> and soft-fp Routines	2018-01-29 10:26:35 -08:00
tls-macros.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
tst-audit.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00