[PATCH] D79667: [Clang] Pass -z max-page-size to linker for Fuchsia

[Roland McGrath via Phabricator via cfe-commits]

mcgrathr created this revision.
mcgrathr added a reviewer: phosek.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
mcgrathr added a parent revision: D79665: [Clang] Pass --pack-dyn-relocs=relr to lld for Fuchsia.

Currently all Fuchsia ABIs use a 4k page size, departing from
the recommended page sizes in the respective psABI documents.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D79667

Files:
  clang/lib/Driver/ToolChains/Fuchsia.cpp
  clang/test/Driver/fuchsia.c


Index: clang/test/Driver/fuchsia.c
===================================================================
--- clang/test/Driver/fuchsia.c
+++ clang/test/Driver/fuchsia.c
@@ -23,7 +23,7 @@
 // CHECK-X86_64: "-fsanitize=safe-stack"
 // CHECK: "-stack-protector" "2"
 // CHECK-NOT: "-fcommon"
-// CHECK: {{.*}}ld.lld{{.*}}" "-z" "now" "-z" "rodynamic" "-z" "separate-loadable-segments" "--pack-dyn-relocs=relr"
+// CHECK: {{.*}}ld.lld{{.*}}" "-z" "max-page-size=4096" "-z" "now" "-z" "rodynamic" "-z" "separate-loadable-segments" "--pack-dyn-relocs=relr"
 // CHECK: "--sysroot=[[SYSROOT]]"
 // CHECK: "-pie"
 // CHECK: "--build-id"
Index: clang/lib/Driver/ToolChains/Fuchsia.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Fuchsia.cpp
+++ clang/lib/Driver/ToolChains/Fuchsia.cpp
@@ -46,6 +46,9 @@
   // handled somewhere else.
   Args.ClaimAllArgs(options::OPT_w);
 
+  CmdArgs.push_back("-z");
+  CmdArgs.push_back("max-page-size=4096");
+
   CmdArgs.push_back("-z");
   CmdArgs.push_back("now");
 


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