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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.
283 lines
6.1 KiB
ArmAsm
283 lines
6.1 KiB
ArmAsm
.section ".tdata", "awT", @progbits
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.globl sg1, sg2, sg3, sg4, sg5, sg6, sg7, sg8
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.globl sh1, sh2, sh3, sh4, sh5, sh6, sh7, sh8
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.hidden sh1, sh2, sh3, sh4, sh5, sh6, sh7, sh8
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sg1: .long 17
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sg2: .long 18
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sg3: .long 19
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sg4: .long 20
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sg5: .long 21
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sg6: .long 22
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sg7: .long 23
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sg8: .long 24
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sl1: .long 65
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sl2: .long 66
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sl3: .long 67
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sl4: .long 68
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sl5: .long 69
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sl6: .long 70
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sl7: .long 71
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sl8: .long 72
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sh1: .long 257
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sh2: .long 258
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sh3: .long 259
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sh4: .long 260
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sh5: .long 261
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sh6: .long 262
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sh7: .long 263
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sh8: .long 264
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.text
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.globl fn1
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.type fn1,@function
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fn1:
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pushl %ebp
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movl %esp, %ebp
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pushl %ebx
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pushl %eax
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call 1f
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1: popl %ebx
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addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
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nop;nop;nop;nop
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/* GD */
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leal sg1@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD -> IE because variable is referenced through @gottpoff too */
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leal sg2@tlsgd(%ecx), %eax
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call *___tls_get_addr@GOT(%ecx)
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nop;nop;nop;nop
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/* GD -> IE because variable is referenced through @gotntpoff too */
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leal sg3@tlsgd(%edx), %eax
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call *___tls_get_addr@GOT(%edx)
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nop;nop;nop;nop
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/* GD -> IE because variable is referenced through @gottpoff and
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@gotntpoff too */
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leal sg4@tlsgd(%edi), %eax
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call *___tls_get_addr@GOT(%edi)
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nop;nop;nop;nop
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/* GD against local variable */
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leal sl1@tlsgd(%esi), %eax
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call *___tls_get_addr@GOT(%esi)
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nop;nop;nop;nop
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/* GD -> IE against local variable referenced through @gottpoff too */
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leal sl2@tlsgd(%ebp), %eax
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call *___tls_get_addr@GOT(%ebp)
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nop;nop;nop;nop
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/* GD -> IE against local variable referenced through @gotntpoff
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too */
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leal sl3@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD -> IE against local variable referenced through @gottpoff and
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@gotntpoff too */
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leal sl4@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD against hidden and local variable */
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leal sh1@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD -> IE against hidden and local variable referenced through
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@gottpoff too */
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leal sh2@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD -> IE against hidden and local variable referenced through
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@gotntpoff too */
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leal sh3@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD -> IE against hidden and local variable referenced through
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@gottpoff and @gotntpoff too */
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leal sh4@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD against hidden but not local variable */
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leal sH1@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD -> IE against hidden but not local variable referenced through
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@gottpoff too */
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leal sH2@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD -> IE against hidden but not local variable referenced through
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@gotntpoff too */
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leal sH3@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* GD -> IE against hidden but not local variable referenced through
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@gottpoff and @gotntpoff too */
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leal sH4@tlsgd(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop;nop;nop;nop
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/* LD */
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leal sl1@tlsldm(%ebx), %eax
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call *___tls_get_addr@GOT(%ebx)
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nop
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leal sl1@dtpoff(%eax), %edx
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nop;nop
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leal 2+sl2@dtpoff(%eax), %ecx
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nop;nop;nop;nop
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/* LD against hidden and local variables */
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leal sh1@tlsldm(%ecx), %eax
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call *___tls_get_addr@GOT(%ecx)
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nop
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leal sh1@dtpoff(%eax), %edx
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nop;nop
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leal sh2@dtpoff+3(%eax), %ecx
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nop;nop;nop;nop
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/* LD against hidden but not local variables */
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leal sH1@tlsldm(%edx), %eax
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call *___tls_get_addr@GOT(%edx)
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nop
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leal sH1@dtpoff(%eax), %edx
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nop;nop
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leal sH2@dtpoff+1(%eax), %ecx
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nop;nop
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/* @gottpoff IE against global var */
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movl %gs:0, %ecx
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nop;nop
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subl sg2@gottpoff(%ebx), %ecx
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nop;nop;nop;nop
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/* @gottpoff IE against global var */
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movl %gs:0, %eax
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nop;nop
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subl sg4@gottpoff(%ebx), %eax
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nop;nop;nop;nop
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/* @gotntpoff IE against global var */
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movl %gs:0, %ecx
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nop;nop
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addl sg3@gotntpoff(%ebx), %ecx
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nop;nop;nop;nop
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/* @gotntpoff IE against global var */
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movl %gs:0, %eax
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nop;nop
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addl sg4@gotntpoff(%ebx), %eax
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nop;nop;nop;nop
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/* @gottpoff IE against local var */
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movl %gs:0, %ecx
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nop;nop
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subl sl2@gottpoff(%ebx), %ecx
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nop;nop;nop;nop
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/* @gottpoff IE against local var */
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movl %gs:0, %eax
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nop;nop
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subl sl4@gottpoff(%ebx), %eax
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nop;nop;nop;nop
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/* @gotntpoff IE against local var */
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movl %gs:0, %ecx
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nop;nop
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addl sl3@gotntpoff(%ebx), %ecx
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nop;nop;nop;nop
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/* @gotntpoff IE against local var */
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movl %gs:0, %eax
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nop;nop
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addl sl4@gotntpoff(%ebx), %eax
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nop;nop;nop;nop
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/* @gottpoff IE against hidden and local var */
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movl %gs:0, %ecx
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nop;nop
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subl sh2@gottpoff(%ebx), %ecx
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nop;nop;nop;nop
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/* @gottpoff IE against hidden and local var */
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movl %gs:0, %eax
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nop;nop
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subl sh4@gottpoff(%ebx), %eax
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nop;nop;nop;nop
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/* @gotntpoff IE against hidden and local var */
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movl %gs:0, %ecx
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nop;nop
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addl sh3@gotntpoff(%ebx), %ecx
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nop;nop;nop;nop
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/* @gotntpoff IE against hidden and local var */
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movl %gs:0, %eax
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nop;nop
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addl sh4@gotntpoff(%ebx), %eax
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nop;nop;nop;nop
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/* @gottpoff IE against hidden but not local var */
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movl %gs:0, %ecx
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nop;nop
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subl sH2@gottpoff(%ebx), %ecx
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nop;nop;nop;nop
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/* @gottpoff IE against hidden but not local var */
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movl %gs:0, %eax
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nop;nop
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subl sH4@gottpoff(%ebx), %eax
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nop;nop;nop;nop
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/* @gotntpoff IE against hidden but not local var */
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movl %gs:0, %ecx
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nop;nop
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addl sH3@gotntpoff(%ebx), %ecx
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nop;nop;nop;nop
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/* @gotntpoff IE against hidden but not local var */
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movl %gs:0, %eax
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nop;nop
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addl sH4@gotntpoff(%ebx), %eax
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nop;nop;nop;nop
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/* Direct access through %gs */
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/* @gotntpoff IE against global var */
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movl sg5@gotntpoff(%ebx), %ecx
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nop;nop
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movl %gs:(%ecx), %edx
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nop;nop;nop;nop
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/* @gotntpoff IE against local var */
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movl sl5@gotntpoff(%ebx), %eax
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nop;nop
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movl %gs:(%eax), %edx
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nop;nop;nop;nop
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/* @gotntpoff IE against hidden and local var */
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movl sh5@gotntpoff(%ebx), %edx
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nop;nop
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movl %gs:(%edx), %edx
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nop;nop;nop;nop
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/* @gotntpoff IE against hidden but not local var */
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movl sH5@gotntpoff(%ebx), %ecx
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nop;nop
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movl %gs:(%ecx), %edx
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nop;nop;nop;nop
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movl -4(%ebp), %ebx
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leave
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ret
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