ELF symbol table field st_other support,

excluding visibility bits.

Mips specific standalone assembler directive "set at".

This directive changes the general purpose register
that the assembler will use when given the symbolic
register name $at.

This does not include negative testing. That will come
in a future patch.

A side affect of this patch recognizes the different 
GPR register names for temporaries between old abi
and new abi so a test case for that is included.

Contributer: Vladimir Medic


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175686 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 182 insertions, 13 deletions

diff --git a/test/MC/Mips/mips_directives.s b/test/MC/Mips/mips_directives.s
index 5026b38..d0a3bea 100644
--- a/test/MC/Mips/mips_directives.s
+++ b/test/MC/Mips/mips_directives.s
@@ -2,18 +2,19 @@
 #this test produces no output so there isS no FileCheck call
 $BB0_2:
   .ent directives_test
-	.frame	$sp,0,$ra
-	.mask 	0x00000000,0
-	.fmask	0x00000000,0
-	.set	noreorder
-	.set	nomacro
-	.set	noat
+    .frame    $sp,0,$ra
+    .mask     0x00000000,0
+    .fmask    0x00000000,0
+    .set    noreorder
+    .set    nomacro
+    .set    noat
 $JTI0_0:
-	.gpword	($BB0_2)
-	.word 0x77fffffc
+    .gpword    ($BB0_2)
+    .word 0x77fffffc
 # CHECK: $JTI0_0:
-# CHECK-NEXT: 	.4byte	2013265916
-	.set  at=$12
-	.set macro
-	.set reorder
-	.end directives_test
+# CHECK-NEXT:     .4byte    2013265916
+    .set  at=$12
+    .set macro
+    .set reorder
+    .set  at=$a0
+    .end directives_test
diff --git a/test/MC/Mips/nabi-regs.s b/test/MC/Mips/nabi-regs.s
new file mode 100644
index 0000000..9371208
--- /dev/null
+++ b/test/MC/Mips/nabi-regs.s
@@ -0,0 +1,36 @@
+# OABI (o32, o64) have a different symbolic register
+# set for the A and T registers because the NABI allows
+# for 4 more register parameters (A registers) offsetting
+# the T registers.
+#
+# For now just check N64
+# RUN: llvm-mc %s -triple=mipsel-unknown-linux -show-encoding \
+# RUN: -mcpu=mips64r2 -arch=mips64 | \
+# RUN: FileCheck %s
+
+# CHECK: .section    __TEXT,__text,regular,pure_instructions
+    .text
+foo:
+
+# CHECK: add    $16, $16, $4            # encoding: [0x02,0x04,0x80,0x20]
+    add $s0,$s0,$a0
+# CHECK: add    $16, $16, $6            # encoding: [0x02,0x06,0x80,0x20]
+    add $s0,$s0,$a2
+# CHECK: add    $16, $16, $7            # encoding: [0x02,0x07,0x80,0x20]
+    add $s0,$s0,$a3
+# CHECK: add    $16, $16, $8            # encoding: [0x02,0x08,0x80,0x20]
+    add $s0,$s0,$a4
+# CHECK: add    $16, $16, $9            # encoding: [0x02,0x09,0x80,0x20]
+    add $s0,$s0,$a5
+# CHECK: add    $16, $16, $10           # encoding: [0x02,0x0a,0x80,0x20]
+    add $s0,$s0,$a6
+# CHECK: add    $16, $16, $11           # encoding: [0x02,0x0b,0x80,0x20]
+    add $s0,$s0,$a7
+# CHECK: add    $16, $16, $12           # encoding: [0x02,0x0c,0x80,0x20]
+    add $s0,$s0,$t0
+# CHECK: add    $16, $16, $13           # encoding: [0x02,0x0d,0x80,0x20]
+    add $s0,$s0,$t1
+# CHECK: add    $16, $16, $14           # encoding: [0x02,0x0e,0x80,0x20]
+    add $s0,$s0,$t2
+# CHECK: add    $16, $16, $15           # encoding: [0x02,0x0f,0x80,0x20]
+    add $s0,$s0,$t3
diff --git a/test/MC/Mips/set-at-directive.s b/test/MC/Mips/set-at-directive.s
new file mode 100644
index 0000000..98a3a35
--- /dev/null
+++ b/test/MC/Mips/set-at-directive.s
@@ -0,0 +1,132 @@
+# RUN: llvm-mc %s -triple=mipsel-unknown-linux -show-encoding -mcpu=mips32r2 | \
+# RUN: FileCheck %s
+# Check that the assembler can handle the documented syntax
+# for ".set at" and set the correct value.
+
+# CHECK: .section __TEXT,__text,regular,pure_instructions
+    .text
+foo:
+# CHECK:   jr    $1                      # encoding: [0x08,0x00,0x20,0x00]
+    .set    at=$1
+    jr    $at
+    nop
+# CHECK:   jr    $2                      # encoding: [0x08,0x00,0x40,0x00]
+    .set    at=$2
+    jr    $at
+    nop
+# CHECK:   jr    $3                      # encoding: [0x08,0x00,0x60,0x00]
+    .set    at=$3
+    jr    $at
+    nop
+# CHECK:   jr    $4                      # encoding: [0x08,0x00,0x80,0x00]
+    .set    at=$a0
+    jr    $at
+    nop
+# CHECK:   jr    $5                      # encoding: [0x08,0x00,0xa0,0x00]
+    .set    at=$a1
+    jr    $at
+    nop
+# CHECK:   jr    $6                      # encoding: [0x08,0x00,0xc0,0x00]
+    .set    at=$a2
+    jr    $at
+    nop
+# CHECK:   jr $7                # encoding: [0x08,0x00,0xe0,0x00]
+    .set    at=$a3
+    jr    $at
+    nop
+# CHECK:   jr    $8                      # encoding: [0x08,0x00,0x00,0x01]
+    .set    at=$8
+    jr    $at
+    nop
+# CHECK:   jr    $9                      # encoding: [0x08,0x00,0x20,0x01]
+    .set    at=$9
+    jr    $at
+    nop
+# CHECK:   jr    $10                     # encoding: [0x08,0x00,0x40,0x01]
+    .set    at=$10
+    jr    $at
+    nop
+# CHECK:   jr    $11                     # encoding: [0x08,0x00,0x60,0x01]
+    .set    at=$11
+    jr    $at
+    nop
+# CHECK:   jr    $12                     # encoding: [0x08,0x00,0x80,0x01]
+    .set    at=$12
+    jr    $at
+    nop
+# CHECK:   jr    $13                     # encoding: [0x08,0x00,0xa0,0x01]
+    .set    at=$13
+    jr    $at
+    nop
+# CHECK:   jr    $14                     # encoding: [0x08,0x00,0xc0,0x01]
+    .set    at=$14
+    jr    $at
+    nop
+# CHECK:   jr    $15                     # encoding: [0x08,0x00,0xe0,0x01]
+    .set    at=$15
+    jr    $at
+    nop
+# CHECK:   jr    $16                     # encoding: [0x08,0x00,0x00,0x02]
+    .set    at=$s0
+    jr    $at
+    nop
+# CHECK:   jr    $17                     # encoding: [0x08,0x00,0x20,0x02]
+    .set    at=$s1
+    jr    $at
+    nop
+# CHECK:   jr    $18                     # encoding: [0x08,0x00,0x40,0x02]
+    .set    at=$s2
+    jr    $at
+    nop
+# CHECK:   jr    $19                     # encoding: [0x08,0x00,0x60,0x02]
+    .set    at=$s3
+    jr    $at
+    nop
+# CHECK:   jr    $20                     # encoding: [0x08,0x00,0x80,0x02]
+    .set    at=$s4
+    jr    $at
+    nop
+# CHECK:   jr    $21                     # encoding: [0x08,0x00,0xa0,0x02]
+    .set    at=$s5
+    jr    $at
+    nop
+# CHECK:   jr    $22                     # encoding: [0x08,0x00,0xc0,0x02]
+    .set    at=$s6
+    jr    $at
+    nop
+# CHECK:   jr    $23                     # encoding: [0x08,0x00,0xe0,0x02]
+    .set    at=$s7
+    jr    $at
+    nop
+# CHECK:   jr    $24                     # encoding: [0x08,0x00,0x00,0x03]
+    .set    at=$24
+    jr    $at
+    nop
+# CHECK:   jr    $25                     # encoding: [0x08,0x00,0x20,0x03]
+    .set    at=$25
+    jr    $at
+    nop
+# CHECK:   jr    $26                     # encoding: [0x08,0x00,0x40,0x03]
+    .set    at=$26
+    jr    $at
+    nop
+# CHECK:   jr    $27                     # encoding: [0x08,0x00,0x60,0x03]
+    .set    at=$27
+    jr    $at
+    nop
+# CHECK:   jr    $gp                     # encoding: [0x08,0x00,0x80,0x03]
+    .set    at=$gp
+    jr    $at
+    nop
+# CHECK:   jr    $fp                     # encoding: [0x08,0x00,0xc0,0x03]
+    .set    at=$fp
+    jr    $at
+    nop
+# CHECK:   jr    $sp                     # encoding: [0x08,0x00,0xa0,0x03]
+    .set    at=$sp
+    jr    $at
+    nop
+# CHECK:   jr    $ra                     # encoding: [0x08,0x00,0xe0,0x03]
+    .set    at=$ra
+    jr    $at
+    nop