If user requested section alignment is greater than MaxPageSize, propagate it to segment headers correctly.

Differential Revision: https://reviews.llvm.org/D35813

llvm-svn: 308930

Author: dmmikulin

lld/ELF/Writer.cpp

@@ -1660,7 +1660,7 @@ template <class ELFT> void Writer<ELFT>::setPhdrs() {
         P.p_paddr = First->getLMA();
     }
     if (P.p_type == PT_LOAD)
-      P.p_align = Config->MaxPageSize;
+      P.p_align = std::max<uint64_t>(P.p_align, Config->MaxPageSize);
     else if (P.p_type == PT_GNU_RELRO) {
       P.p_align = 1;
       // The glibc dynamic loader rounds the size down, so we need to round up

lld/test/ELF/linkerscript/align-section-offset.s

@@ -2,9 +2,10 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
 # RUN: echo "SECTIONS { .foo : ALIGN(2M) { *(.foo) } }" > %t.script
 # RUN: ld.lld -o %t --script %t.script %t.o -shared
-# RUN: llvm-readelf -S %t | FileCheck %s
+# RUN: llvm-readelf -S -l %t | FileCheck %s
 
 # CHECK: .foo  PROGBITS  0000000000200000 200000 000008 00  WA  0   0 2097152
+# CHECK: LOAD           0x200000 0x0000000000200000 0x0000000000200000 {{.*}} RW  0x200000
 
         .section .foo, "aw"
         .quad 42