forked from OSchip/llvm-project
71 lines
2.6 KiB
ArmAsm
71 lines
2.6 KiB
ArmAsm
// REQUIRES: arm
|
|
// RUN: llvm-mc -filetype=obj -triple=thumbv7-windows %s -o %t.obj
|
|
// RUN: lld-link -entry:main -subsystem:console %t.obj -out:%t.exe -verbose 2>&1 | FileCheck -check-prefix=VERBOSE %s
|
|
// RUN: llvm-objdump -d %t.exe --start-address=0x403000 --stop-address=0x403008 | FileCheck --check-prefix=FUNC01 %s
|
|
// RUN: llvm-objdump -d %t.exe --start-address=0x404ffa --stop-address=0x405012 | FileCheck --check-prefix=FUNC01-THUNKS %s
|
|
|
|
// VERBOSE: Added {{.*}} thunks with margin 204800 in 2 passes
|
|
|
|
.syntax unified
|
|
.globl main
|
|
.text
|
|
main:
|
|
b func01
|
|
bx lr
|
|
|
|
.irp i, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
|
|
.section .text$\i\()a, "xr"
|
|
.balign 8192
|
|
func\i:
|
|
bne far_func\i
|
|
bne func_within_margin\i
|
|
// Originally, the first section is less than 8192 bytes large, and the
|
|
// second one follows almost directly. After adding one thunk after
|
|
// the first section, the second one will move forward by 8192 bytes
|
|
// due to the alignment.
|
|
.space 8192 - 8 - 4
|
|
|
|
.section .text$\i\()b, "xr"
|
|
.balign 8192
|
|
align\i:
|
|
nop
|
|
.endr
|
|
|
|
.section .text$999, "xr"
|
|
tail:
|
|
.space 0x100000 - 100*1024 - 18*8192*2
|
|
// Initially, these symbols are within range from all the sections above,
|
|
// even when taking the initial margin into account. After adding thunks
|
|
// to all the sections above, some of these are also out of range, forcing
|
|
// running a second pass.
|
|
.irp i, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
|
|
func_within_margin\i:
|
|
nop
|
|
.endr
|
|
.space 0x100000
|
|
|
|
// These are always out of range.
|
|
.irp i, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
|
|
far_func\i:
|
|
nop
|
|
.endr
|
|
bx lr
|
|
|
|
// FUNC01: 403000: 41 f0 fc 87 bne.w #8184 <.text+0x3ffc>
|
|
// FUNC01: 403004: 41 f0 ff 87 bne.w #8190 <.text+0x4006>
|
|
|
|
// Check that we only have two thunks here, even if we created the first
|
|
// thunk twice (once in the first pass, then thrown away and recreated
|
|
// in the second pass).
|
|
|
|
// FUNC01-THUNKS: 404ffa: 00 00 movs r0, r0
|
|
// The instruction above is padding from the .space
|
|
// FUNC01-THUNKS: 404ffc: 47 f2 1e 0c movw r12, #28702
|
|
// FUNC01-THUNKS: 405000: c0 f2 20 0c movt r12, #32
|
|
// FUNC01-THUNKS: 405004: e7 44 add pc, r12
|
|
// FUNC01-THUNKS: 405006: 46 f6 f0 7c movw r12, #28656
|
|
// FUNC01-THUNKS: 40500a: c0 f2 10 0c movt r12, #16
|
|
// FUNC01-THUNKS: 40500e: e7 44 add pc, r12
|
|
// The instruction below is padding from the .balign
|
|
// FUNC01-THUNKS: 405010: cc cc ldm r4!, {r2, r3, r6, r7}
|