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https://sourceware.org/git/binutils-gdb.git
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160eba9301
The syntax we ended up with for -m32 -fPIC calls to __tls_get_addr is
rather weird.
bl __tls_get_addr+0x8000(gd0@tlsgd)@plt
This came about by accident, probably due to requiring the arg reloc
before the call reloc.
Of course the @plt really belongs with __tls_get_addr since it affects
the call rather than the call arg, and it isn't a great deal of
trouble to ensure the relocs are emitted in the correct order. This
patch supports a newer syntax, like so:
bl __tls_get_addr+0x8000@plt(gd0@tlsgd)
gas/
* config/tc-ppc.c (parse_tls_arg): New function, extracted..
(md_assembler): ..from here. Call it after parsing other
suffix modifiers too.
ld/
* testsuite/ld-powerpc/tls32.s: Test new @plt syntax.
121 lines
2.7 KiB
ArmAsm
121 lines
2.7 KiB
ArmAsm
.section ".tbss","awT",@nobits
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.global _start,gd0,ld0,ld1,ld2,ie0,le0,le1
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.align 2
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gd0: .space 4
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ld0: .space 4
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ld1: .space 4
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ld2: .space 4
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ie0: .space 4
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le0: .space 4
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le1: .space 4
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.section ".tdata","awT",@progbits
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.align 2
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gd4: .long 0x12345678
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ld4: .long 0x23456789
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ld5: .long 0x3456789a
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ld6: .long 0x456789ab
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ie4: .long 0x56789abc
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le4: .long 0x6789abcd
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le5: .long 0x789abcde
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.section ".got2","aw"
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.LCTOC1 = .+32768
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.text
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_start:
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bcl 20,31,0f
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0:
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mflr 30
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addis 30,30,.LCTOC1-0b@ha
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addi 30,30,.LCTOC1-0b@l
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#extern syms
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#GD
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addi 3,31,gd@got@tlsgd #R_PPC_GOT_TLSGD16 gd
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.ifdef TLSMARK
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bl __tls_get_addr(gd@tlsgd) #R_PPC_TLSGD gd
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#R_PPC_REL24 __tls_get_addr
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.else
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bl __tls_get_addr #R_PPC_REL24 __tls_get_addr
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.endif
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#LD
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addi 3,31,ld@got@tlsld #R_PPC_GOT_TLSLD16 ld
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.ifdef TLSMARK
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bl __tls_get_addr(ld@tlsld) #R_PPC_TLSLD ld
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#R_PPC_REL24 __tls_get_addr
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.else
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bl __tls_get_addr #R_PPC_REL24 __tls_get_addr
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.endif
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#global syms
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#GD
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addi 3,31,gd0@got@tlsgd #R_PPC_GOT_TLSGD16 gd0
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.ifdef TLSMARK
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bl __tls_get_addr+0x8000(gd0@tlsgd)@plt #R_PPC_TLSGD gd0
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#R_PPC_PLTREL24 __tls_get_addr+0x8000
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.else
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bl __tls_get_addr+0x8000@plt #R_PPC_PLTREL24 __tls_get_addr+0x8000
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.endif
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#LD
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addi 3,31,ld0@got@tlsld #R_PPC_GOT_TLSLD16 ld0
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.ifdef TLSMARK
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#exercise saner new syntax with @plt before the arg
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bl __tls_get_addr+0x8000@plt(ld0@tlsld) #R_PPC_TLSLD ld0
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#R_PPC_PLTREL24 __tls_get_addr+0x8000
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.else
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bl __tls_get_addr+0x8000@plt #R_PPC_PLTREL24 __tls_get_addr+0x8000
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.endif
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addi 9,3,ld0@dtprel #R_PPC_DTPREL16 ld0
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addis 9,3,ld1@dtprel@ha #R_PPC_DTPREL16_HA ld1
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lwz 10,ld1@dtprel@l(9) #R_PPC_DTPREL16_LO ld1
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#IE
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lwz 9,ie0@got@tprel(31) #R_PPC_GOT_TPREL16 ie0
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lhzx 10,9,ie0@tls #R_PPC_TLS ie0
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#LE
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lbz 10,le0@tprel(2) #R_PPC_TPREL16 le0
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addis 9,2,le1@tprel@ha #R_PPC_TPREL16_HA le1
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stb 10,le1@tprel@l(9) #R_PPC_TPREL16_LO le1
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#local syms, use a different got reg too.
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#GD
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addi 3,30,gd4@got@tlsgd #R_PPC_GOT_TLSGD16 gd4
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.ifdef TLSMARK
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bl __tls_get_addr(gd4@tlsgd) #R_PPC_TLSGD gd4
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#R_PPC_REL24 __tls_get_addr
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.else
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bl __tls_get_addr #R_PPC_REL24 __tls_get_addr
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.endif
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#LD
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addi 3,30,ld4@got@tlsld #R_PPC_GOT_TLSLD16 ld4
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.ifdef TLSMARK
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bl __tls_get_addr(ld4@tlsld) #R_PPC_TLSLD ld4
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#R_PPC_REL24 __tls_get_addr
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.else
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bl __tls_get_addr #R_PPC_REL24 __tls_get_addr
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.endif
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stw 10,ld4@dtprel(3) #R_PPC_DTPREL16 ld4
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addis 9,3,ld5@dtprel@ha #R_PPC_DTPREL16_HA ld5
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stw 10,ld5@dtprel@l(9) #R_PPC_DTPREL16_LO ld5
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#IE
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lwz 9,ie0@got@tprel(30) #R_PPC_GOT_TPREL16 ie4
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sthx 10,9,ie0@tls #R_PPC_TLS ie4
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#LE
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lhz 10,le4@tprel(2) #R_PPC_TPREL16 le4
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addis 9,2,le5@tprel@ha #R_PPC_TPREL16_HA le5
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lha 10,le5@tprel@l(9) #R_PPC_TPREL16_LO le5
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