xref: /llvm-project/lld/test/ELF/linkerscript/end-overflow-check.test (revision e4118a7ac0fc2347e78d7c87a1663b70e8ab71ed) 
1REQUIRES: x86
2
3# RUN: rm -rf %t && split-file %s %t
4# RUN: llvm-mc -filetype=obj -triple=x86_64 %t/a.s -o %t/a.o
5
6## The error should be triggered only for the second test where the overflow really exists.
7
8RUN: ld.lld %t/a.o -T %t/b.lds -o /dev/null 2>&1
9RUN: not ld.lld %t/a.o -T %t/c.lds -o /dev/null 2>&1 | FileCheck --check-prefix=ERROR %s
10
11# ERROR: error: section '_abss' will not fit in region 'SRAM0': overflowed by 1024 bytes
12# ERROR: error: section '.c.bss' will not fit in region 'SRAM0': overflowed by 1024 bytes
13# ERROR: error: section '.text' will not fit in region 'SRAM0': overflowed by 1025 bytes
14
15#--- a.s
16.section .a.bss, "aw", %nobits
17.globl abss
18abss:
19.zero 0xDF0
20.size abss, 0xDF0
21
22.section .c.bss, "aw", %nobits
23.globl cbss
24
25.text
26.globl _start
27_start:
28nop
29
30#--- b.lds
31MEMORY
32{
33    SRAM0 (rw) : ORIGIN = 0x20000400, LENGTH = 10K
34}
35
36SECTIONS
37{
38    _abss ALIGN(REGION1__PRE_ALIGNMENT) :
39    {
40        REGION1__BEGIN = .; REGION1__ALIGNED_BEGIN = .; REGION1_ALIGNED_BEGIN = .;
41        *(.a.bss)
42        REGION1__END = .; . = ALIGN(REGION1__POST_ALIGNMENT); REGION1_ALIGNED_END = .;
43    } > SRAM0
44}
45
46REGION1__PRE_ALIGNMENT = 0x00000800;
47REGION1__PADDED_XOR = ((ABSOLUTE(REGION1__ALIGNED_BEGIN) | (ABSOLUTE(REGION1__END) - 1)) & ~(ABSOLUTE(REGION1__ALIGNED_BEGIN) & (ABSOLUTE(REGION1__END) - 1)));
48REGION1__PADDED_REGION_SHIFT = LOG2CEIL(REGION1__PADDED_XOR);
49REGION1__PADDED_SR_SHIFT = REGION1__PADDED_REGION_SHIFT - 3;
50REGION1__PADDED_SR_SIZE = MAX(1 << REGION1__PADDED_SR_SHIFT, 32);
51REGION1__POST_ALIGNMENT = REGION1__PADDED_SR_SIZE;
52
53#--- c.lds
54MEMORY
55{
56    SRAM0 (rw) : ORIGIN = 0x20000400, LENGTH = 4K
57}
58
59SECTIONS
60{
61    _abss ALIGN(REGION1__PRE_ALIGNMENT) :
62    {
63        REGION1__BEGIN = .; REGION1__ALIGNED_BEGIN = .; REGION1_ALIGNED_BEGIN = .;
64        *(.a.bss)
65        REGION1__END = .; . = ALIGN(REGION1__POST_ALIGNMENT); REGION1_ALIGNED_END = .;
66    } > SRAM0
67}
68
69REGION1__PRE_ALIGNMENT = 0x00000800;
70REGION1__PADDED_XOR = ((ABSOLUTE(REGION1__ALIGNED_BEGIN) | (ABSOLUTE(REGION1__END) - 1)) & ~(ABSOLUTE(REGION1__ALIGNED_BEGIN) & (ABSOLUTE(REGION1__END) - 1)));
71REGION1__PADDED_REGION_SHIFT = LOG2CEIL(REGION1__PADDED_XOR);
72REGION1__PADDED_SR_SHIFT = REGION1__PADDED_REGION_SHIFT - 3;
73REGION1__PADDED_SR_SIZE = MAX(1 << REGION1__PADDED_SR_SHIFT, 32);
74REGION1__POST_ALIGNMENT = REGION1__PADDED_SR_SIZE;
75