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ARM IAS: support .inst directive

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This adds support for the .inst directive.  This is an ARM specific directive to
indicate an instruction encoded as a constant expression.  The major difference
between .word, .short, or .byte and .inst is that the latter will be
disassembled as an instruction since it does not get flagged as data.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197657 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
2013-12-19 05:17:58 +00:00
parent 2ad4cf54ee
commit 304512cf40
11 changed files with 317 additions and 0 deletions
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15
test/MC/ARM/inst-arm-suffixes.s Normal file
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@ RUN: not llvm-mc %s -triple armv7-linux-gnueabi -filetype asm -o - 2>&1 \
@ RUN: | FileCheck -check-prefix CHECK-ERROR %s
.syntax unified
.arm
.align 2
.global suffixes_invalid_in_arm
.type suffixes_invalid_in_arm,%function
suffixes_invalid_in_arm:
.inst.n 2
@ CHECK-ERROR: width suffixes are invalid in ARM mode
.inst.w 4
@ CHECK-ERROR: width suffixes are invalid in ARM mode

15
test/MC/ARM/inst-constant-required.s Normal file
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@ RUN: not llvm-mc %s -triple=armv7-linux-gnueabi -filetype asm -o - 2>&1 \
@ RUN: | FileCheck -check-prefix CHECK-ERROR %s
.syntax unified
.arm
.align 2
.global constant_expression_required
.type constant_expression_required,%function
constant_expression_required:
.Label:
movs r0, r0
.inst .Label
@ CHECK-ERROR: expected constant expression

20
test/MC/ARM/inst-directive-emit.s Normal file
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@@ -0,0 +1,20 @@
@ RUN: llvm-mc %s -triple armv7-linux-gnueabi -filetype asm -o - | FileCheck %s
.syntax unified
.thumb
.align 2
.global emit_asm
.type emit_asm,%function
emit_asm:
.inst.w 0xf2400000, 0xf2c00000
@ CHECK: .text
@ CHECK: .code 16
@ CHECK: .align 2
@ CHECK: .globl emit_asm
@ CHECK: .type emit_asm,%function
@ CHECK: emit_asm:
@ CHECK: inst.w 0xF2400000
@ CHECK: inst.w 0xF2C00000

81
test/MC/ARM/inst-directive.s Normal file
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@@ -0,0 +1,81 @@
@ RUN: llvm-mc %s -triple=armv7-linux-gnueabi -filetype=obj -o - \
@ RUN: | llvm-readobj -s -sd | FileCheck %s
.syntax unified
@-------------------------------------------------------------------------------
@ arm_inst
@-------------------------------------------------------------------------------
.arm
.section .inst.arm_inst
.align 2
.global arm_inst
.type arm_inst,%function
arm_inst:
.inst 0xdefe
@ CHECK: Section {
@ CHECK: Name: .inst.arm_inst
@ CHECK: SectionData (
@ CHECK-NEXT: 0000: FEDE0000
@ CHECK-NEXT: )
@-------------------------------------------------------------------------------
@ thumb_inst_n
@-------------------------------------------------------------------------------
.thumb
.section .inst.thumb_inst_n
.align 2
.global thumb_inst_n
.type thumb_inst_n,%function
thumb_inst_n:
.inst.n 0xdefe
@ CHECK: Section {
@ CHECK: Name: .inst.thumb_inst_n
@ CHECK: SectionData (
@ CHECK-NEXT: 0000: FEDE
@ CHECK-NEXT: )
@-------------------------------------------------------------------------------
@ thumb_inst_w
@-------------------------------------------------------------------------------
.thumb
.section .inst.thumb_inst_w
.align 2
.global thumb_inst_w
.type thumb_inst_w,%function
thumb_inst_w:
.inst.w 0x00000000
@ CHECK: Section {
@ CHECK: Name: .inst.thumb_inst_w
@ CHECK: SectionData (
@ CHECK-NEXT: 0000: 00000000
@ CHECK-NEXT: )
@-------------------------------------------------------------------------------
@ thumb_inst_w
@-------------------------------------------------------------------------------
.thumb
.section .inst.thumb_inst_inst
.align 2
.global thumb_inst_inst
.type thumb_inst_inst,%function
thumb_inst_inst:
.inst.w 0xf2400000, 0xf2c00000
@ CHECK: Section {
@ CHECK: Name: .inst.thumb_inst_inst
@ CHECK: SectionData (
@ CHECK-NEXT: 0000: 40F20000 C0F20000
@ CHECK-NEXT: )

14
test/MC/ARM/inst-overflow.s Normal file
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@ RUN: not llvm-mc %s -triple armv7-linux-gnueabi -filetype asm -o - 2>&1 \
@ RUN: | FileCheck -check-prefix CHECK-ERROR %s
.syntax unified
.arm
.align 2
.global constant_overflow
.type constant_overflow,%function
constant_overflow:
.inst 1 << 32
@ CHECK-ERROR: inst operand is too big

13
test/MC/ARM/inst-thumb-overflow-2.s Normal file
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@@ -0,0 +1,13 @@
@ RUN: not llvm-mc %s -triple armv7-linux-gnueabi -filetype asm -o - 2>&1 \
@ RUN: | FileCheck -check-prefix CHECK-ERRORS %s
.syntax unified
.thumb
.align 2
.global constant_overflow
.type constant_overflow,%function
constant_overflow:
.inst.w 1 << 32
@ CHECK-ERRORS: inst.w operand is too big

13
test/MC/ARM/inst-thumb-overflow.s Normal file
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@@ -0,0 +1,13 @@
@ RUN: not llvm-mc %s -triple armv7-linux-gnueabi -filetype asm -o - 2>&1 \
@ RUN: | FileCheck -check-prefix CHECK-ERROR %s
.syntax unified
.thumb
.align 2
.global constant_overflow
.type constant_overflow,%function
constant_overflow:
.inst.n 1 << 31
@ CHECK-ERROR: inst.n operand is too big, use inst.w instead

13
test/MC/ARM/inst-thumb-suffixes.s Normal file
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@@ -0,0 +1,13 @@
@ RUN: not llvm-mc %s -triple armv7-linux-gnueabi -filetype asm -o - 2>&1 \
@ RUN: | FileCheck -check-prefix CHECK-ERROR %s
.syntax unified
.thumb
.align 2
.global suffixes_required_in_thumb
.type suffixes_required_in_thumb,%function
suffixes_required_in_thumb:
.inst 0x0000
@ CHECK-ERROR: cannot determine Thumb instruction size, use inst.n/inst.w instead