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This patch implements jalx instruction for Mips architecture.This instruction executes a procedure call within the current 256 MB-aligned region and change the ISA Mode from MIPS32 to microMIPS32 or MIPS16e. Usage samples for assembler and dissasembler are provided as well.

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llvm-svn: 202706
This commit is contained in:
Vladimir Medic 2014-03-03 13:12:59 +00:00
parent 8d3b137235
commit c17b0032b0
6 changed files with 24 additions and 1 deletions
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1
lib/Target/Mips/MipsInstrInfo.td
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@ -1038,6 +1038,7 @@ def B : UncondBranch<BEQ>;
def JAL : MMRel, JumpLink<"jal", calltarget>, FJ<3>;
def JALR : MMRel, JumpLinkReg<"jalr", GPR32Opnd>, JALR_FM;
def JALX : MMRel, JumpLink<"jalx", calltarget>, FJ<0x1D>;
def JALRPseudo : JumpLinkRegPseudo<GPR32Opnd, JALR, RA>;
def BGEZAL : MMRel, BGEZAL_FT<"bgezal", brtarget, GPR32Opnd>, BGEZAL_FM<0x11>;
def BLTZAL : MMRel, BGEZAL_FT<"bltzal", brtarget, GPR32Opnd>, BGEZAL_FM<0x10>;

3
test/MC/Disassembler/Mips/mips32.txt
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@ -206,6 +206,9 @@
# CHECK: jal 1328
0x0c 0x00 0x01 0x4c
# CHECK: jalx 1328
0x74 0x00 0x01 0x4c
# CHECK: jalr $7
0x00 0xe0 0xf8 0x09

3
test/MC/Disassembler/Mips/mips32_le.txt
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@ -206,6 +206,9 @@
# CHECK: jal 1328
0x4c 0x01 0x00 0x0c
# CHECK: jalx 1328
0x4c 0x01 0x00 0x74
# CHECK: jalr $7
0x09 0xf8 0xe0 0x00

3
test/MC/Disassembler/Mips/mips32r2.txt
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@ -215,6 +215,9 @@
# CHECK: jal 1328
0x0c 0x00 0x01 0x4c
# CHECK: jalx 1328
0x74 0x00 0x01 0x4c
# CHECK: jalr $7
0x00 0xe0 0xf8 0x09

3
test/MC/Disassembler/Mips/mips32r2_le.txt
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@ -215,6 +215,9 @@
# CHECK: jal 1328
0x4c 0x01 0x00 0x0c
# CHECK: jalx 1328
0x4c 0x01 0x00 0x74
# CHECK: jalr $7
0x09 0xf8 0xe0 0x00

12
test/MC/Mips/mips-jump-instructions.s
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@ -101,12 +101,16 @@ end_of_code:
# CHECK32: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK32: jr $7 # encoding: [0x08,0x00,0xe0,0x00]
# CHECK32: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK32:lab:
# CHECK32: jr $7 # encoding: [0x08,0x00,0xe0,0x00]
# CHECK32: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK32: jalr $25 # encoding: [0x09,0xf8,0x20,0x03]
# CHECK32: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK32: jalr $4, $25 # encoding: [0x09,0x20,0x20,0x03]
# CHECK32: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK32: jalx lab # encoding: [A,A,A,0b011101AA]
# CHECK32: # fixup A - offset: 0, value: lab, kind: fixup_Mips_26
# CHECK32: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK64: j 1328 # encoding: [0x4c,0x01,0x00,0x08]
# CHECK64: nop # encoding: [0x00,0x00,0x00,0x00]
@ -120,13 +124,16 @@ end_of_code:
# CHECK64: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK64: jr $7 # encoding: [0x08,0x00,0xe0,0x00]
# CHECK64: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK64:lab:
# CHECK64: jr $7 # encoding: [0x08,0x00,0xe0,0x00]
# CHECK64: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK64: jalr $25 # encoding: [0x09,0xf8,0x20,0x03]
# CHECK64: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK64: jalr $4, $25 # encoding: [0x09,0x20,0x20,0x03]
# CHECK64: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK64: jalx lab # encoding: [A,A,A,0b011101AA]
# CHECK64: # fixup A - offset: 0, value: lab, kind: fixup_Mips_26
# CHECK64: nop # encoding: [0x00,0x00,0x00,0x00]
j 1328
nop
@ -140,9 +147,12 @@ end_of_code:
nop
jr $7
nop
lab:
j $7
nop
jal $25
nop
jal $4,$25
nop
jalx lab
nop