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llvm/test/MC/Mips/relocation.s
Daniel Sanders 0b6e0490cf [mips][ias] R_MIPS_(GOT|HI|LO|PC)16 and R_MIPS_GPREL32 do not need symbols. 
Summary:
In theory, care must be taken to ensure that pairs of R_MIPS_(GOT|HI|LO)16
make the same decision on both relocs in the reloc pair but in practice
this isn't as hard as it sounds and only limits the complexity of the
predicate used. We handle all three with the same code to ensure their
decisions always agree with each other.

Reviewers: sdardis

Subscribers: rafael, dsanders, sdardis, llvm-commits

Differential Revision: http://reviews.llvm.org/D19016


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268900 91177308-0d34-0410-b5e6-96231b3b80d8
2016-05-09 10:21:14 +00:00

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// RUN: llvm-mc -triple mips-unknown-linux < %s -show-encoding \
// RUN: | FileCheck -check-prefix=ENCBE -check-prefix=FIXUP %s
// RUN: llvm-mc -triple mipsel-unknown-linux < %s -show-encoding \
// RUN: | FileCheck -check-prefix=ENCLE -check-prefix=FIXUP %s
// RUN: llvm-mc -filetype=obj -triple mipsel-unknown-linux < %s \
// RUN: | llvm-readobj -r | FileCheck -check-prefix=RELOC %s
// RUN: llvm-mc -filetype=obj -triple mips-unknown-linux < %s \
// RUN: | llvm-readobj -sections -section-data \
// RUN: | FileCheck -check-prefix=DATA %s
// Test that we produce the correct relocation.
// FIXME: move more relocation only tests here.
// Check prefixes:
// RELOC - Check the relocation in the object.
// FIXUP - Check the fixup on the instruction.
// ENCBE - Check the big-endian encoding on the instruction.
// ENCLE - Check the little-endian encoding on the instruction.
// ????? - Placeholder. Relocation is defined but the way of generating it is
// unknown.
// FIXME - Placeholder. Generation method is known but doesn't work.
// DATA-LABEL: Name: .text
// DATA: SectionData (
// DATA-NEXT: 0000: 00000004 00000000 00000004 0C000000
.short foo // RELOC: R_MIPS_16 foo
.short bar // RELOC: R_MIPS_16 .data
baz: .long foo // RELOC: R_MIPS_32 foo
.long bar // RELOC: R_MIPS_32 .data
// ?????: R_MIPS_REL32 foo
jal foo // RELOC: R_MIPS_26 foo
// ENCBE: jal foo # encoding: [0b000011AA,A,A,A]
// ENCLE: jal foo # encoding: [A,A,A,0b000011AA]
// FIXUP: # fixup A - offset: 0, value: foo, kind: fixup_Mips_26
// The nop from the jal is at 0x0010
// DATA-NEXT: 0010: 00000000 0C000001 00000000 24620000
jal baz // RELOC: R_MIPS_26 .text
// ENCBE: jal baz # encoding: [0b000011AA,A,A,A]
// ENCLE: jal baz # encoding: [A,A,A,0b000011AA]
// FIXUP: # fixup A - offset: 0, value: baz, kind: fixup_Mips_26
addiu $2, $3, %hi(foo) // RELOC: R_MIPS_HI16 foo
// ENCBE: addiu $2, $3, %hi(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %hi(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %hi(foo), kind: fixup_Mips_HI16
// DATA-NEXT: 0020: 24620000 24620000 24620004 24620000
addiu $2, $3, %lo(foo) // RELOC: R_MIPS_LO16 foo
// ENCBE: addiu $2, $3, %lo(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %lo(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %lo(foo), kind: fixup_Mips_LO16
addiu $2, $3, %hi(bar) // RELOC: R_MIPS_HI16 .data
// ENCBE: addiu $2, $3, %hi(bar) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %hi(bar) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %hi(bar), kind: fixup_Mips_HI16
addiu $2, $3, %lo(bar) // RELOC: R_MIPS_LO16 .data
// ENCBE: addiu $2, $3, %lo(bar) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %lo(bar) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %lo(bar), kind: fixup_Mips_LO16
addiu $2, $3, %gp_rel(foo) // RELOC: R_MIPS_GPREL16 foo
// ENCBE: addiu $2, $3, %gp_rel(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %gp_rel(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %gp_rel(foo), kind: fixup_Mips_GPREL
// DATA-NEXT: 0030: 24620004 24620000 24420000 24620000
addiu $2, $3, %gp_rel(bar) // RELOC: R_MIPS_GPREL16 .data
// ENCBE: addiu $2, $3, %gp_rel(bar) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %gp_rel(bar) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %gp_rel(bar), kind: fixup_Mips_GPREL
// ?????: R_MIPS_LITERAL foo
addiu $2, $3, %got(foo) // RELOC: R_MIPS_GOT16 foo
// ENCBE: addiu $2, $3, %got(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %got(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %got(foo), kind: fixup_Mips_GOT
// %got requires a %lo pair
addiu $2, $2, %lo(foo)
addiu $2, $3, %got(bar) // RELOC: R_MIPS_GOT16 .data
// ENCBE: addiu $2, $3, %got(bar) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %got(bar) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %got(bar), kind: fixup_Mips_GOT
// DATA-NEXT: 0040: 24420004 0000FFBE 24620000
// %got requires a %lo pair
addiu $2, $2, %lo(bar)
.short foo-. // RELOC: R_MIPS_PC16 foo
.short baz-. // RELOC-NOT: R_MIPS_PC16
addiu $2, $3, %call16(foo) // RELOC: R_MIPS_CALL16 foo
// ENCBE: addiu $2, $3, %call16(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %call16(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %call16(foo), kind: fixup_Mips_CALL16
.p2align 4
// DATA-NEXT: 0050: 00000000 00000000 00000000 00000004
.quad foo // RELOC: R_MIPS_64 foo
.quad bar // RELOC: R_MIPS_64 .data
// ?????: R_MIPS_GPREL32 foo
// ?????: R_MIPS_UNUSED1 foo
// ?????: R_MIPS_UNUSED2 foo
// ?????: R_MIPS_UNUSED3 foo
// ?????: R_MIPS_SHIFT5 foo
// ?????: R_MIPS_SHIFT6 foo
// DATA-NEXT: 0060: 24620000 24620000 24620000 24620000
addiu $2, $3, %got_disp(foo) // RELOC: R_MIPS_GOT_DISP foo
// ENCBE: addiu $2, $3, %got_disp(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %got_disp(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %got_disp(foo), kind: fixup_Mips_GOT_DISP
addiu $2, $3, %got_page(foo) // RELOC: R_MIPS_GOT_PAGE foo
// ENCBE: addiu $2, $3, %got_page(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %got_page(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %got_page(foo), kind: fixup_Mips_GOT_PAGE
addiu $2, $3, %got_ofst(foo) // RELOC: R_MIPS_GOT_OFST foo
// ENCBE: addiu $2, $3, %got_ofst(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %got_ofst(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %got_ofst(foo), kind: fixup_Mips_GOT_OFST
addiu $2, $3, %got_hi(foo) // RELOC: R_MIPS_GOT_HI16 foo
// ENCBE: addiu $2, $3, %got_hi(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %got_hi(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %got_hi(foo), kind: fixup_Mips_GOT_HI16
// DATA-NEXT: 0070: 24620000 64620000 64620000 24620000
addiu $2, $3, %got_lo(foo) // RELOC: R_MIPS_GOT_LO16 foo
// ENCBE: addiu $2, $3, %got_lo(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %got_lo(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %got_lo(foo), kind: fixup_Mips_GOT_LO16
// addiu $2, $3, %neg(foo) // FIXME: R_MIPS_SUB foo
// ?????: R_MIPS_INSERT_A
// ?????: R_MIPS_INSERT_B
// ?????: R_MIPS_DELETE
.set mips64
daddiu $2, $3, %higher(foo) // RELOC: R_MIPS_HIGHER foo
// ENCBE: daddiu $2, $3, %higher(foo) # encoding: [0x64,0x62,A,A]
// ENCLE: daddiu $2, $3, %higher(foo) # encoding: [A,A,0x62,0x64]
// FIXUP: # fixup A - offset: 0, value: %higher(foo), kind: fixup_Mips_HIGHER
daddiu $2, $3, %highest(foo) // RELOC: R_MIPS_HIGHEST foo
// ENCBE: daddiu $2, $3, %highest(foo) # encoding: [0x64,0x62,A,A]
// ENCLE: daddiu $2, $3, %highest(foo) # encoding: [A,A,0x62,0x64]
// FIXUP: # fixup A - offset: 0, value: %highest(foo), kind: fixup_Mips_HIGHEST
.set mips0
addiu $2, $3, %call_hi(foo) // RELOC: R_MIPS_CALL_HI16 foo
// ENCBE: addiu $2, $3, %call_hi(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %call_hi(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %call_hi(foo), kind: fixup_Mips_CALL_HI16
// DATA-NEXT: 0080: 24620000 24620000 24620000 24620000
addiu $2, $3, %call_lo(foo) // RELOC: R_MIPS_CALL_LO16 foo
// ENCBE: addiu $2, $3, %call_lo(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %call_lo(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %call_lo(foo), kind: fixup_Mips_CALL_LO16
// ?????: R_MIPS_SCN_DISP foo
// ?????: R_MIPS_REL16 foo
// ?????: R_MIPS_ADD_IMMEDIATE foo
// ?????: R_MIPS_PJUMP foo
// ?????: R_MIPS_RELGOT foo
// jalr $25 // ?????: R_MIPS_JALR foo
// ?????: R_MIPS_TLS_DTPMOD32 foo
// .dtprelword foo // FIXME: R_MIPS_TLS_DTPREL32 foo
// ?????: R_MIPS_TLS_DTPMOD64 foo
// .dtpreldword foo // FIXME: R_MIPS_TLS_DTPREL64 foo
addiu $2, $3, %tlsgd(foo) // RELOC: R_MIPS_TLS_GD foo
// ENCBE: addiu $2, $3, %tlsgd(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %tlsgd(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %tlsgd(foo), kind: fixup_Mips_TLSGD
addiu $2, $3, %tlsldm(foo) // RELOC: R_MIPS_TLS_LDM foo
// ENCBE: addiu $2, $3, %tlsldm(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %tlsldm(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %tlsldm(foo), kind: fixup_Mips_TLSLDM
addiu $2, $3, %dtprel_hi(foo) // RELOC: R_MIPS_TLS_DTPREL_HI16 foo
// ENCBE: addiu $2, $3, %dtprel_hi(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %dtprel_hi(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %dtprel_hi(foo), kind: fixup_Mips_DTPREL_HI
addiu $2, $3, %dtprel_lo(foo) // RELOC: R_MIPS_TLS_DTPREL_LO16 foo
// ENCBE: addiu $2, $3, %dtprel_lo(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %dtprel_lo(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %dtprel_lo(foo), kind: fixup_Mips_DTPREL_LO
addiu $2, $3, %gottprel(foo) // RELOC: R_MIPS_TLS_GOTTPREL foo
// ENCBE: addiu $2, $3, %gottprel(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %gottprel(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %gottprel(foo), kind: fixup_Mips_GOTTPREL
// .tprelword foo // FIXME: R_MIPS_TLS_TPREL32 foo
// .tpreldword foo // FIXME: R_MIPS_TLS_TPREL64 foo
addiu $2, $3, %tprel_hi(foo) // RELOC: R_MIPS_TLS_TPREL_HI16 foo
// ENCBE: addiu $2, $3, %tprel_hi(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %tprel_hi(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %tprel_hi(foo), kind: fixup_Mips_TPREL_HI
addiu $2, $3, %tprel_lo(foo) // RELOC: R_MIPS_TLS_TPREL_LO16 foo
// ENCBE: addiu $2, $3, %tprel_lo(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %tprel_lo(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %tprel_lo(foo), kind: fixup_Mips_TPREL_LO
// ?????: R_MIPS_GLOB_DAT foo
.set mips32r6
beqzc $2, foo // RELOC: R_MIPS_PC21_S2 foo
// ENCBE: beqzc $2, foo # encoding: [0xd8,0b010AAAAA,A,A]
// ENCLE: beqzc $2, foo # encoding: [A,A,0b010AAAAA,0xd8]
// FIXUP: # fixup A - offset: 0, value: foo-4, kind: fixup_MIPS_PC21_S2
bc foo // RELOC: R_MIPS_PC26_S2 foo
// ENCBE: bc foo # encoding: [0b110010AA,A,A,A]
// ENCLE: bc foo # encoding: [A,A,A,0b110010AA]
// FIXUP: # fixup A - offset: 0, value: foo-4, kind: fixup_MIPS_PC26_S2
.set mips64r6
ldpc $2, foo // RELOC: R_MIPS_PC18_S3 foo
// ENCBE: ldpc $2, foo # encoding: [0xec,0b010110AA,A,A]
// ENCLE: ldpc $2, foo # encoding: [A,A,0b010110AA,0xec]
// FIXUP: # fixup A - offset: 0, value: foo, kind: fixup_Mips_PC18_S3
.set mips32r6
lwpc $2, foo // RELOC: R_MIPS_PC19_S2 foo
// ENCBE: lwpc $2, foo # encoding: [0xec,0b01001AAA,A,A]
// ENCLE: lwpc $2, foo # encoding: [A,A,0b01001AAA,0xec]
// FIXUP: # fixup A - offset: 0, value: foo, kind: fixup_MIPS_PC19_S2
addiu $2, $3, %pcrel_hi(foo) // RELOC: R_MIPS_PCHI16 foo
// ENCBE: addiu $2, $3, %pcrel_hi(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %pcrel_hi(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %pcrel_hi(foo), kind: fixup_MIPS_PCHI16
addiu $2, $3, %pcrel_lo(foo) // RELOC: R_MIPS_PCLO16 foo
// ENCBE: addiu $2, $3, %pcrel_lo(foo) # encoding: [0x24,0x62,A,A]
// ENCLE: addiu $2, $3, %pcrel_lo(foo) # encoding: [A,A,0x62,0x24]
// FIXUP: # fixup A - offset: 0, value: %pcrel_lo(foo), kind: fixup_MIPS_PCLO16
.set mips0
// FIXME: R_MIPS16_*
// ?????: R_MIPS_COPY foo
// ?????: R_MIPS_JUMP_SLOT foo
// FIXME: R_MICROMIPS_*
.long foo-. // RELOC: R_MIPS_PC32 foo
// .ehword foo // FIXME: R_MIPS_EH foo
.data
.word 0
bar:
.word 1
// DATA-LABEL: Section {
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