[clang] [PS5][Driver] Update default linking options for `-r` (PR #113595)

[Edd Dawson via cfe-commits]

https://github.com/playstation-edd created https://github.com/llvm/llvm-project/pull/113595

Until now, these options have been hardcoded as downstream patches in lld. Add them to the driver so that the private patches can be removed.

PS5 only. On PS4, the proprietary linker will continue to perform the equivalent behaviours itself.

SIE tracker: TOOLCHAIN-16704

>From 59d1ec471340f3781db5034d1fc0ee0b46e5f8f5 Mon Sep 17 00:00:00 2001
From: Edd Dawson <edd.dawson at sony.com>
Date: Thu, 24 Oct 2024 10:15:16 +0100
Subject: [PATCH] [PS5][Driver] Update default linking options for `-r`

Until now, these options have been hardcoded as downstream patches in
lld. Add them to the driver so that the private patches can be removed.

PS5 only. On PS4, the proprietary linker will continue to perform the
equivalent behaviours itself.

SIE tracker: TOOLCHAIN-16704
---
 clang/lib/Driver/ToolChains/PS4CPU.cpp | 14 +++++++++
 clang/test/Driver/ps5-linker.c         | 41 ++++++++++++++++----------
 2 files changed, 40 insertions(+), 15 deletions(-)

diff --git a/clang/lib/Driver/ToolChains/PS4CPU.cpp b/clang/lib/Driver/ToolChains/PS4CPU.cpp
index a50333223ff5c4..719bba41436a57 100644
--- a/clang/lib/Driver/ToolChains/PS4CPU.cpp
+++ b/clang/lib/Driver/ToolChains/PS4CPU.cpp
@@ -250,6 +250,20 @@ void tools::PS5cpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("-pie");
 
   if (!Relocatable) {
+    CmdArgs.push_back("--eh-frame-hdr");
+    CmdArgs.push_back("--hash-style=sysv");
+
+    // Add a build-id by default to allow the PlayStation symbol server to
+    // index the symbols. `uuid` is the cheapest fool-proof method.
+    // (The non-determinism and alternative methods are noted in the downstream
+    // PlayStation docs).
+    CmdArgs.push_back("--build-id=uuid");
+
+    // All references are expected to be resolved at static link time for both
+    // executables and dynamic libraries. This has been the default linking
+    // behaviour for numerous PlayStation generations.
+    CmdArgs.push_back("--unresolved-symbols=report-all");
+
     // Lazy binding of PLTs is not supported on PlayStation. They are placed in
     // the RelRo segment.
     CmdArgs.push_back("-z");
diff --git a/clang/test/Driver/ps5-linker.c b/clang/test/Driver/ps5-linker.c
index d18309a650726d..2080f4dc91a7fb 100644
--- a/clang/test/Driver/ps5-linker.c
+++ b/clang/test/Driver/ps5-linker.c
@@ -14,21 +14,32 @@
 // CHECK-NO-PIE-NOT: "-pie"
 // CHECK-SHARED: "--shared"
 
-// Test the driver passes PlayStation-specific -z options to the linker.
-
-// RUN: %clang --target=x86_64-sie-ps5 %s -### 2>&1 | FileCheck --check-prefixes=CHECK-Z %s
-
-// CHECK-Z: {{ld(\.exe)?}}"
-// CHECK-Z-SAME: "-z" "now"
-// CHECK-Z-SAME: "-z" "start-stop-visibility=hidden"
-// CHECK-Z-SAME: "-z" "dead-reloc-in-nonalloc=.debug_*=0xffffffffffffffff"
-// CHECK-Z-SAME: "-z" "dead-reloc-in-nonalloc=.debug_ranges=0xfffffffffffffffe"
-// CHECK-Z-SAME: "-z" "dead-reloc-in-nonalloc=.debug_loc=0xfffffffffffffffe"
-
-// RUN: %clang --target=x86_64-sie-ps5 -r %s -### 2>&1 | FileCheck --check-prefixes=CHECK-NO-Z %s
-
-// CHECK-NO-Z: {{ld(\.exe)?}}"
-// CHECK-NO-Z-NOT: "-z"
+// Test the driver passes PlayStation-specific options to the linker that are
+// appropriate for the type of output. Many options don't apply for relocatable
+// output (-r).
+
+// RUN: %clang --target=x86_64-sie-ps5 %s -### 2>&1 | FileCheck --check-prefixes=CHECK-EXE %s
+// RUN: %clang --target=x86_64-sie-ps5 %s -shared -### 2>&1 | FileCheck --check-prefixes=CHECK-EXE %s
+// RUN: %clang --target=x86_64-sie-ps5 %s -static -### 2>&1 | FileCheck --check-prefixes=CHECK-EXE %s
+// RUN: %clang --target=x86_64-sie-ps5 %s -r -### 2>&1 | FileCheck --check-prefixes=CHECK-NO-EXE %s
+
+// CHECK-EXE: {{ld(\.exe)?}}"
+// CHECK-EXE-SAME: "--eh-frame-hdr"
+// CHECK-EXE-SAME: "--hash-style=sysv"
+// CHECK-EXE-SAME: "--build-id=uuid"
+// CHECK-EXE-SAME: "--unresolved-symbols=report-all"
+// CHECK-EXE-SAME: "-z" "now"
+// CHECK-EXE-SAME: "-z" "start-stop-visibility=hidden"
+// CHECK-EXE-SAME: "-z" "dead-reloc-in-nonalloc=.debug_*=0xffffffffffffffff"
+// CHECK-EXE-SAME: "-z" "dead-reloc-in-nonalloc=.debug_ranges=0xfffffffffffffffe"
+// CHECK-EXE-SAME: "-z" "dead-reloc-in-nonalloc=.debug_loc=0xfffffffffffffffe"
+
+// CHECK-NO-EXE: {{ld(\.exe)?}}"
+// CHECK-NO-EXE-NOT: "--eh-frame-hdr"
+// CHECK-NO-EXE-NOT: "--hash-style
+// CHECK-NO-EXE-NOT: "--build-id
+// CHECK-NO-EXE-NOT: "--unresolved-symbols
+// CHECK-NO-EXE-NOT: "-z"
 
 // Test that -static is forwarded to the linker