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|
@ RUN: llvm-mc %s -triple=armv7-unknown-linux-gnueabi -filetype=obj -o - \
@ RUN: | llvm-readobj -S --sd | FileCheck %s
@ Check for different stack pointer offsets.
@ The .pad directive will track the stack pointer offsets. There are several
@ ways to encode the stack offsets. We have to test:
@
@ offset < 0x00
@ offset == 0x00
@ 0x04 <= offset <= 0x100
@ 0x104 <= offset <= 0x200
@ 0x204 <= offset
.syntax unified
@-------------------------------------------------------------------------------
@ TEST1
@-------------------------------------------------------------------------------
.section .TEST1
.globl func1
.align 2
.type func1,%function
.fnstart
func1:
.pad #0
sub sp, sp, #0
add sp, sp, #0
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
@-------------------------------------------------------------------------------
@ The assembler should emit nothing (will be filled up with finish opcode).
@-------------------------------------------------------------------------------
@ CHECK: Section {
@ CHECK: Name: .ARM.extab.TEST1
@ CHECK: SectionData (
@ CHECK: 0000: 00000000 B0B0B000 |........|
@ CHECK: )
@ CHECK: }
@-------------------------------------------------------------------------------
@ TEST2
@-------------------------------------------------------------------------------
.section .TEST2
.globl func2a
.align 2
.type func2a,%function
.fnstart
func2a:
.pad #0x4
sub sp, sp, #0x4
add sp, sp, #0x4
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
.globl func2b
.align 2
.type func2b,%function
.fnstart
func2b:
.pad #0x100
sub sp, sp, #0x100
add sp, sp, #0x100
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
@-------------------------------------------------------------------------------
@ The assembler should emit ((offset - 4) >> 2).
@-------------------------------------------------------------------------------
@ CHECK: Section {
@ CHECK: Name: .ARM.extab.TEST2
@ CHECK: SectionData (
@ CHECK: 0000: 00000000 B0B00000 00000000 B0B03F00 |..............?.|
@ CHECK: )
@ CHECK: }
@-------------------------------------------------------------------------------
@ TEST3
@-------------------------------------------------------------------------------
.section .TEST3
.globl func3a
.align 2
.type func3a,%function
.fnstart
func3a:
.pad #0x104
sub sp, sp, #0x104
add sp, sp, #0x104
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
.globl func3b
.align 2
.type func3b,%function
.fnstart
func3b:
.pad #0x200
sub sp, sp, #0x200
add sp, sp, #0x200
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
@-------------------------------------------------------------------------------
@ The assembler should emit 0x3F and ((offset - 0x104) >> 2).
@-------------------------------------------------------------------------------
@ CHECK: Section {
@ CHECK: Name: .ARM.extab.TEST3
@ CHECK: SectionData (
@ CHECK: 0000: 00000000 B03F0000 00000000 B03F3F00 |.....?.......??.|
@ CHECK: )
@ CHECK: }
@-------------------------------------------------------------------------------
@ TEST4
@-------------------------------------------------------------------------------
.section .TEST4
.globl func4a
.align 2
.type func4a,%function
.fnstart
func4a:
.pad #0x204
sub sp, sp, #0x204
add sp, sp, #0x204
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
.globl func4b
.align 2
.type func4b,%function
.fnstart
func4b:
.pad #0x580
sub sp, sp, #0x580
add sp, sp, #0x580
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
@-------------------------------------------------------------------------------
@ The assembler should emit 0xB2 and the ULEB128 encoding of
@ ((offset - 0x204) >> 2).
@-------------------------------------------------------------------------------
@ CHECK: Section {
@ CHECK: Name: .ARM.extab.TEST4
@ CHECK: SectionData (
@ CHECK: 0000: 00000000 B000B200 00000000 01DFB200 |................|
@ CHECK: )
@ CHECK: }
@-------------------------------------------------------------------------------
@ TEST5
@-------------------------------------------------------------------------------
.section .TEST5
.globl func4a
.align 2
.type func4a,%function
.fnstart
func5a:
.pad #-0x4
add sp, sp, #0x4
sub sp, sp, #0x4
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
.globl func5b
.align 2
.type func5b,%function
.fnstart
func5b:
.pad #-0x104
add sp, sp, #0x104
sub sp, sp, #0x4
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
.globl func5c
.align 2
.type func5c,%function
.fnstart
func5c:
.pad #-0x204
add sp, sp, #0x204
sub sp, sp, #0x4
bx lr
.personality __gxx_personality_v0
.handlerdata
.fnend
@-------------------------------------------------------------------------------
@ The assembler should emit (0x40 | (-offset - 4)) >> 2. When (-offset - 4)
@ is greater than 0x3f, then multiple 0x7f should be emitted.
@-------------------------------------------------------------------------------
@ CHECK: Section {
@ CHECK: Name: .ARM.extab.TEST5
@ CHECK: SectionData (
@ CHECK: 0000: 00000000 B0B04000 00000000 B07F4000 |......@.......@.|
@ CHECK: 0010: 00000000 7F7F4000 |......@.|
@ CHECK: )
@ CHECK: }
|
