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[mips] Implement la macro expansion for N32 ABI

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This commit is contained in:
Simon Atanasyan 2019-10-18 23:00:08 +03:00
parent 1c89a3ddce
commit b43aa19111
2 changed files with 84 additions and 11 deletions
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2
lib/Target/Mips/AsmParser/MipsAsmParser.cpp
View File

@ -2969,7 +2969,7 @@ bool MipsAsmParser::loadAndAddSymbolAddress(const MCExpr *SymExpr,
const MipsMCExpr *GotExpr = nullptr;
const MCExpr *LoExpr = nullptr;
if (IsPtr64) {
if (ABI.IsN32() || ABI.IsN64()) {
// The remaining cases are:
// Small offset: ld $tmp, %got_disp(symbol)($gp)
// >daddiu $tmp, $tmp, offset

93
test/MC/Mips/macro-la-pic.s
View File

@ -4,9 +4,16 @@
# RUN: -mcpu=mips32r6 | FileCheck -check-prefix=O32 %s
# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding \
# RUN: -mattr=+xgot -mcpu=mips32r2 | FileCheck -check-prefix=XGOT %s
# RUN: -mattr=+xgot -mcpu=mips32r2 \
# RUN: | FileCheck -check-prefixes=XGOT,XO32 %s
# RUN: llvm-mc %s -triple=mipsn32 -show-encoding \
# RUN: -mcpu=mips64r2 | FileCheck -check-prefix=N32 %s
# RUN: llvm-mc %s -triple=mipsn32 -show-encoding \
# RUN: -mattr=+xgot -mcpu=mips64r2 \
# RUN: | FileCheck -check-prefixes=XGOT,XN32 %s
# N32 should be acceptable too but it currently errors out.
# N64 should be acceptable too but we cannot convert la to dla yet.
.option pic2
@ -20,6 +27,9 @@ la $5, symbol
# XGOT: lw $5, %got_lo(symbol)($5) # encoding: [0x8c,0xa5,A,A]
# XGOT: # fixup A - offset: 0, value: %got_lo(symbol), kind: fixup_Mips_GOT_LO16
# N32: lw $5, %got_disp(symbol)($gp) # encoding: [0x8f,0x85,A,A]
# fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
la $5, symbol($6)
# O32: lw $5, %got(symbol)($gp) # encoding: [0x8f,0x85,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -32,6 +42,10 @@ la $5, symbol($6)
# XGOT: # fixup A - offset: 0, value: %got_lo(symbol), kind: fixup_Mips_GOT_LO16
# XGOT: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
# N32: lw $5, %got_disp(symbol)($gp) # encoding: [0x8f,0x85,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
la $6, symbol($6)
# O32: lw $1, %got(symbol)($gp) # encoding: [0x8f,0x81,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -44,6 +58,10 @@ la $6, symbol($6)
# XGOT: # fixup A - offset: 0, value: %got_lo(symbol), kind: fixup_Mips_GOT_LO16
# XGOT: addu $6, $1, $6 # encoding: [0x00,0x26,0x30,0x21]
# N32: lw $1, %got_disp(symbol)($gp) # encoding: [0x8f,0x81,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addu $6, $1, $6 # encoding: [0x00,0x26,0x30,0x21]
la $5, symbol+8
# O32: lw $5, %got(symbol)($gp) # encoding: [0x8f,0x85,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -56,6 +74,10 @@ la $5, symbol+8
# XGOT: # fixup A - offset: 0, value: %got_lo(symbol), kind: fixup_Mips_GOT_LO16
# XGOT: addiu $5, $5, 8 # encoding: [0x24,0xa5,0x00,0x08]
# N32: lw $5, %got_disp(symbol)($gp) # encoding: [0x8f,0x85,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addiu $5, $5, 8 # encoding: [0x24,0xa5,0x00,0x08]
la $5, symbol+8($6)
# O32: lw $5, %got(symbol)($gp) # encoding: [0x8f,0x85,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -70,6 +92,11 @@ la $5, symbol+8($6)
# XGOT: addiu $5, $5, 8 # encoding: [0x24,0xa5,0x00,0x08]
# XGOT: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
# N32: lw $5, %got_disp(symbol)($gp) # encoding: [0x8f,0x85,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addiu $5, $5, 8 # encoding: [0x24,0xa5,0x00,0x08]
# N32: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
la $6, symbol+8($6)
# O32: lw $1, %got(symbol)($gp) # encoding: [0x8f,0x81,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -84,16 +111,29 @@ la $6, symbol+8($6)
# XGOT: addiu $1, $1, 8 # encoding: [0x24,0x21,0x00,0x08]
# XGOT: addu $6, $1, $6 # encoding: [0x00,0x26,0x30,0x21]
# N32: lw $1, %got_disp(symbol)($gp) # encoding: [0x8f,0x81,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addiu $1, $1, 8 # encoding: [0x24,0x21,0x00,0x08]
# N32: addu $6, $1, $6 # encoding: [0x00,0x26,0x30,0x21]
la $5, 1f
# O32: lw $5, %got($tmp0)($gp) # encoding: [0x8f,0x85,A,A]
# O32: # fixup A - offset: 0, value: %got($tmp0), kind: fixup_Mips_GOT
# O32: addiu $5, $5, %lo($tmp0) # encoding: [0x24,0xa5,A,A]
# O32: # fixup A - offset: 0, value: %lo($tmp0), kind: fixup_Mips_LO16
# XGOT: lw $5, %got($tmp0)($gp) # encoding: [0x8f,0x85,A,A]
# XGOT: # fixup A - offset: 0, value: %got($tmp0), kind: fixup_Mips_GOT
# XGOT: addiu $5, $5, %lo($tmp0) # encoding: [0x24,0xa5,A,A]
# XGOT: # fixup A - offset: 0, value: %lo($tmp0), kind: fixup_Mips_LO16
# XO32: lw $5, %got($tmp0)($gp) # encoding: [0x8f,0x85,A,A]
# XO32: # fixup A - offset: 0, value: %got($tmp0), kind: fixup_Mips_GOT
# XO32: addiu $5, $5, %lo($tmp0) # encoding: [0x24,0xa5,A,A]
# XO32: # fixup A - offset: 0, value: %lo($tmp0), kind: fixup_Mips_LO16
# N32: lw $5, %got_disp(.Ltmp0)($gp) # encoding: [0x8f,0x85,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(.Ltmp0), kind: fixup_Mips_GOT_DISP
## FIXME: GAS generates R_MIPS_GOT_PAGE / R_MIPS_GOT_OFST pair of relocations
## in case of using N32 ABI + XGOT.
# XN32: lw $5, %got_disp(.Ltmp0)($gp) # encoding: [0x8f,0x85,A,A]
# XN32: # fixup A - offset: 0, value: %got_disp(.Ltmp0), kind: fixup_Mips_GOT_DISP
1:
# PIC expansions involving $25 are special.
@ -107,6 +147,9 @@ la $25, symbol
# XGOT: lw $25, %call_lo(symbol)($25) # encoding: [0x8f,0x39,A,A]
# XGOT: # fixup A - offset: 0, value: %call_lo(symbol), kind: fixup_Mips_CALL_LO16
# N32: lw $25, %call16(symbol)($gp) # encoding: [0x8f,0x99,A,A]
# N32: # fixup A - offset: 0, value: %call16(symbol), kind: fixup_Mips_CALL16
la $25, symbol($6)
# O32: lw $25, %got(symbol)($gp) # encoding: [0x8f,0x99,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -119,6 +162,10 @@ la $25, symbol($6)
# XGOT: # fixup A - offset: 0, value: %got_lo(symbol), kind: fixup_Mips_GOT_LO16
# XGOT: addu $25, $25, $6 # encoding: [0x03,0x26,0xc8,0x21]
# N32: lw $25, %got_disp(symbol)($gp) # encoding: [0x8f,0x99,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addu $25, $25, $6 # encoding: [0x03,0x26,0xc8,0x21]
la $25, symbol($25)
# O32: lw $1, %got(symbol)($gp) # encoding: [0x8f,0x81,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -131,6 +178,10 @@ la $25, symbol($25)
# XGOT: # fixup A - offset: 0, value: %got_lo(symbol), kind: fixup_Mips_GOT_LO16
# XGOT: addu $25, $1, $25 # encoding: [0x00,0x39,0xc8,0x21]
# N32: lw $1, %got_disp(symbol)($gp) # encoding: [0x8f,0x81,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addu $25, $1, $25 # encoding: [0x00,0x39,0xc8,0x21]
la $25, symbol+8
# O32: lw $25, %got(symbol)($gp) # encoding: [0x8f,0x99,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -143,6 +194,10 @@ la $25, symbol+8
# XGOT: # fixup A - offset: 0, value: %got_lo(symbol), kind: fixup_Mips_GOT_LO16
# XGOT: addiu $25, $25, 8 # encoding: [0x27,0x39,0x00,0x08]
# N32: lw $25, %got_disp(symbol)($gp) # encoding: [0x8f,0x99,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addiu $25, $25, 8 # encoding: [0x27,0x39,0x00,0x08]
la $25, symbol+8($6)
# O32: lw $25, %got(symbol)($gp) # encoding: [0x8f,0x99,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -157,6 +212,11 @@ la $25, symbol+8($6)
# XGOT: addiu $25, $25, 8 # encoding: [0x27,0x39,0x00,0x08]
# XGOT: addu $25, $25, $6 # encoding: [0x03,0x26,0xc8,0x21]
# N32: lw $25, %got_disp(symbol)($gp) # encoding: [0x8f,0x99,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addiu $25, $25, 8 # encoding: [0x27,0x39,0x00,0x08]
# N32: addu $25, $25, $6 # encoding: [0x03,0x26,0xc8,0x21]
la $25, symbol+8($25)
# O32: lw $1, %got(symbol)($gp) # encoding: [0x8f,0x81,A,A]
# O32: # fixup A - offset: 0, value: %got(symbol), kind: fixup_Mips_GOT
@ -171,14 +231,27 @@ la $25, symbol+8($25)
# XGOT: addiu $1, $1, 8 # encoding: [0x24,0x21,0x00,0x08]
# XGOT: addu $25, $1, $25 # encoding: [0x00,0x39,0xc8,0x21]
# N32: lw $1, %got_disp(symbol)($gp) # encoding: [0x8f,0x81,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(symbol), kind: fixup_Mips_GOT_DISP
# N32: addiu $1, $1, 8 # encoding: [0x24,0x21,0x00,0x08]
# N32: addu $25, $1, $25 # encoding: [0x00,0x39,0xc8,0x21]
la $25, 2f
# O32: lw $25, %got($tmp1)($gp) # encoding: [0x8f,0x99,A,A]
# O32: # fixup A - offset: 0, value: %got($tmp1), kind: fixup_Mips_GOT
# O32: addiu $25, $25, %lo($tmp1) # encoding: [0x27,0x39,A,A]
# O32: # fixup A - offset: 0, value: %lo($tmp1), kind: fixup_Mips_LO16
# XGOT: lw $25, %got($tmp1)($gp) # encoding: [0x8f,0x99,A,A]
# XGOT: # fixup A - offset: 0, value: %got($tmp1), kind: fixup_Mips_GOT
# XGOT: addiu $25, $25, %lo($tmp1) # encoding: [0x27,0x39,A,A]
# XGOT: # fixup A - offset: 0, value: %lo($tmp1), kind: fixup_Mips_LO16
# XO32: lw $25, %got($tmp1)($gp) # encoding: [0x8f,0x99,A,A]
# XO32: # fixup A - offset: 0, value: %got($tmp1), kind: fixup_Mips_GOT
# XO32: addiu $25, $25, %lo($tmp1) # encoding: [0x27,0x39,A,A]
# XO32: # fixup A - offset: 0, value: %lo($tmp1), kind: fixup_Mips_LO16
# N32: lw $25, %got_disp(.Ltmp1)($gp) # encoding: [0x8f,0x99,A,A]
# N32: # fixup A - offset: 0, value: %got_disp(.Ltmp1), kind: fixup_Mips_GOT_DISP
## FIXME: GAS generates R_MIPS_GOT_PAGE / R_MIPS_GOT_OFST pair of relocations
## in case of using N32 ABI + XGOT.
# XN32: lw $25, %got_disp(.Ltmp1)($gp) # encoding: [0x8f,0x99,A,A]
# XN32: # fixup A - offset: 0, value: %got_disp(.Ltmp1), kind: fixup_Mips_GOT_DISP
2: