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[lld][ELF] Add a corner testcase for elf::getLoongArchPageDelta

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If `page(dest) - page(pc)` is 0xfffffffffff000, i.e. page(pc) is next
to page(dest), and lo12(dest) > 0x7ff, correct %pc64_lo12 and %pc64_hi12
should be both -1 (which can be checked with binutils) but they are both
0 on lld. This patch adds such a test showing lld's incorrect behaviour
and following patch will fix this issue.
This commit is contained in:
Weining Lu
2023-11-10 13:37:55 +08:00
parent 67c3cb4f6b
commit e752b58e0d
1 changed files with 13 additions and 0 deletions
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13
lld/test/ELF/loongarch-pc-aligned.s
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@@ -260,6 +260,19 @@
# EXTREME15-NEXT: lu32i.d $t0, -349526
# EXTREME15-NEXT: lu52i.d $t0, $t0, -1093
## FIXME: Correct %pc64_lo20 should be 0xfffff (-1) and %pc64_hi12 should be 0xfff (-1), but current values are:
## page delta = 0x0000000000000000, page offset = 0x888
## %pc_lo12 = 0x888 = -1912
## %pc_hi20 = 0x00000 = 0
## %pc64_lo20 = 0x00000 = 0
## %pc64_hi12 = 0x00000 = 0
# RUN: ld.lld %t/extreme.o --section-start=.rodata=0x0000000012344888 --section-start=.text=0x0000000012345678 -o %t/extreme16
# RUN: llvm-objdump -d --no-show-raw-insn %t/extreme16 | FileCheck %s --check-prefix=EXTREME16
# EXTREME16: addi.d $t0, $zero, -1912
# EXTREME16-NEXT: pcalau12i $t1, 0
# EXTREME16-NEXT: lu32i.d $t0, 0
# EXTREME16-NEXT: lu52i.d $t0, $t0, 0
#--- a.s
.rodata
x: