mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-03-07 13:39:43 +08:00
6eaa7fb59b
We can generate i386 TLS code sequences for general and local dynamic models without PLT, which uses indirect call via GOT: call *___tls_get_addr@GOT(%reg) where EBX register isn't required as GOT base, instead of direct call: call ___tls_get_addr[@PLT] which requires EBX register as GOT base. Since direct call is 4-byte long and indirect call, is 5-byte long, the extra one byte must be handled properly. For general dynamic model, 7-byte lea instruction before call instruction is replaced by 6-byte one to make room for indirect call. For local dynamic model, we simply use 5-byte indirect call. TLS linker optimization is updated to recognize new instruction patterns. For local dynamic model to local exec model transition, we generate a 6-byte lea instruction as nop, instead of a 1-byte nop plus a 4-byte lea instruction. Since linker may convert call ___tls_get_addr[@PLT] to addr32 call ____tls_get_addr when producing static executable, both patterns are recognized. bfd/ * elf64-i386.c (elf_i386_link_hash_entry): Add tls_get_addr. (elf_i386_link_hash_newfunc): Initialize tls_get_addr to 2. (elf_i386_check_tls_transition): Check indirect call and direct call with the addr32 prefix for general and local dynamic models. Set the tls_get_addr feild. (elf_i386_convert_load_reloc): Always use addr32 prefix for indirect ___tls_get_addr call via GOT. (elf_i386_relocate_section): Handle GD->LE, GD->IE and LD->LE transitions with indirect call and direct call with the addr32 prefix. ld/ * testsuite/ld-i386/i386.exp: Run libtlspic2.so, tlsbin2, tlsgd3, tlsld2, tlsgd4, tlspie3a, tlspie3b and tlspie3c. * testsuite/ld-i386/pass.out: New file. * testsuite/ld-i386/tls-def1.c: Likewise. * testsuite/ld-i386/tls-gd1.S: Likewise. * testsuite/ld-i386/tls-ld1.S: Likewise. * testsuite/ld-i386/tls-main1.c: Likewise. * testsuite/ld-i386/tls.exp: Likewise. * testsuite/ld-i386/tlsbin2-nacl.rd: Likewise. * testsuite/ld-i386/tlsbin2.dd: Likewise. * testsuite/ld-i386/tlsbin2.rd: Likewise. * testsuite/ld-i386/tlsbin2.sd: Likewise. * testsuite/ld-i386/tlsbin2.td: Likewise. * testsuite/ld-i386/tlsbinpic2.s: Likewise. * testsuite/ld-i386/tlsgd3.dd: Likewise. * testsuite/ld-i386/tlsgd3.s: Likewise. * testsuite/ld-i386/tlsgd4.d: Likewise. * testsuite/ld-i386/tlsgd4.s: Likewise. * testsuite/ld-i386/tlsld2.s: Likewise. * testsuite/ld-i386/tlspic2-nacl.rd: Likewise. * testsuite/ld-i386/tlspic2.dd: Likewise. * testsuite/ld-i386/tlspic2.rd: Likewise. * testsuite/ld-i386/tlspic2.sd: Likewise. * testsuite/ld-i386/tlspic2.td: Likewise. * testsuite/ld-i386/tlspic3.s: Likewise. * testsuite/ld-i386/tlspie3.s: Likewise. * testsuite/ld-i386/tlspie3a.d: Likewise. * testsuite/ld-i386/tlspie3b.d: Likewise. * testsuite/ld-i386/tlspie3c.d: Likewise. |
||
|---|---|---|
| .. | ||
| config | ||
| ld-aarch64 | ||
| ld-alpha | ||
| ld-arc | ||
| ld-arm | ||
| ld-auto-import | ||
| ld-avr | ||
| ld-bootstrap | ||
| ld-cdtest | ||
| ld-checks | ||
| ld-cris | ||
| ld-crx | ||
| ld-cygwin | ||
| ld-d10v | ||
| ld-discard | ||
| ld-elf | ||
| ld-elfcomm | ||
| ld-elfvers | ||
| ld-elfvsb | ||
| ld-elfweak | ||
| ld-fastcall | ||
| ld-frv | ||
| ld-gc | ||
| ld-h8300 | ||
| ld-i386 | ||
| ld-ia64 | ||
| ld-ifunc | ||
| ld-libs | ||
| ld-linkonce | ||
| ld-m68hc11 | ||
| ld-m68k | ||
| ld-mep | ||
| ld-metag | ||
| ld-mips-elf | ||
| ld-misc | ||
| ld-mmix | ||
| ld-mn10300 | ||
| ld-nds32 | ||
| ld-nios2 | ||
| ld-pe | ||
| ld-pie | ||
| ld-plugin | ||
| ld-powerpc | ||
| ld-s390 | ||
| ld-scripts | ||
| ld-selective | ||
| ld-sh | ||
| ld-shared | ||
| ld-size | ||
| ld-sparc | ||
| ld-spu | ||
| ld-srec | ||
| ld-tic6x | ||
| ld-tilegx | ||
| ld-tilepro | ||
| ld-undefined | ||
| ld-unique | ||
| ld-v850 | ||
| ld-vax-elf | ||
| ld-versados | ||
| ld-visium | ||
| ld-vxworks | ||
| ld-x86-64 | ||
| ld-xc16x | ||
| ld-xstormy16 | ||
| ld-xtensa | ||
| ld-z8k | ||
| lib | ||
| ChangeLog-2004 | ||
| ChangeLog-2005 | ||
| ChangeLog-2006 | ||
| ChangeLog-2007 | ||
| ChangeLog-2008 | ||
| ChangeLog-2009 | ||
| ChangeLog-2010 | ||
| ChangeLog-2011 | ||
| ChangeLog-2012 | ||
| ChangeLog-2013 | ||
| ChangeLog-2014 | ||
| ChangeLog-2015 | ||
| ChangeLog-9303 | ||