[clang] [PS5][Driver] Supply default linker scripts (PR #114546)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Edd Dawson (playstation-edd)

<details>
<summary>Changes</summary>

Until now, this has been hardcoded as a downstream patch in lld. Add it to the driver so that the private patch can be removed.

PS5 only. On PS4, the equivalent hardcoded configuration will remain in the proprietary linker.

SIE tracker: TOOLCHAIN-16704

---
Full diff: https://github.com/llvm/llvm-project/pull/114546.diff


2 Files Affected:

- (modified) clang/lib/Driver/ToolChains/PS4CPU.cpp (+10) 
- (modified) clang/test/Driver/ps5-linker.c (+13) 


``````````diff
diff --git a/clang/lib/Driver/ToolChains/PS4CPU.cpp b/clang/lib/Driver/ToolChains/PS4CPU.cpp
index 877cb4e7b1261f..c5299d606f2386 100644
--- a/clang/lib/Driver/ToolChains/PS4CPU.cpp
+++ b/clang/lib/Driver/ToolChains/PS4CPU.cpp
@@ -293,6 +293,16 @@ void tools::PS5cpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
         "dead-reloc-in-nonalloc=.debug_ranges=0xfffffffffffffffe");
     CmdArgs.push_back("-z");
     CmdArgs.push_back("dead-reloc-in-nonalloc=.debug_loc=0xfffffffffffffffe");
+
+    // The PlayStation loader expects linked objects to be laid out in a
+    // particular way. This is achieved by linker scripts that are supplied
+    // with the SDK. The scripts are inside <sdkroot>/target/lib, which is
+    // added as a search path elsewhere.
+    // "PRX" has long stood for "PlayStation Relocatable eXecutable".
+    CmdArgs.push_back("--default-script");
+    CmdArgs.push_back(Static   ? "static.script"
+                      : Shared ? "prx.script"
+                               : "main.script");
   }
 
   if (Static)
diff --git a/clang/test/Driver/ps5-linker.c b/clang/test/Driver/ps5-linker.c
index 0fcc0f02f5a901..363c431b6937eb 100644
--- a/clang/test/Driver/ps5-linker.c
+++ b/clang/test/Driver/ps5-linker.c
@@ -66,6 +66,19 @@
 // CHECK-NO-EXE-NOT: "--unresolved-symbols
 // CHECK-NO-EXE-NOT: "-z"
 
+// Test that an appropriate linker script is supplied by the driver.
+
+// RUN: %clang --target=x86_64-sie-ps5 %s -### 2>&1 | FileCheck --check-prefixes=CHECK-SCRIPT -DSCRIPT=main %s
+// RUN: %clang --target=x86_64-sie-ps5 %s -shared -### 2>&1 | FileCheck --check-prefixes=CHECK-SCRIPT -DSCRIPT=prx %s
+// RUN: %clang --target=x86_64-sie-ps5 %s -static -### 2>&1 | FileCheck --check-prefixes=CHECK-SCRIPT -DSCRIPT=static %s
+// RUN: %clang --target=x86_64-sie-ps5 %s -r -### 2>&1 | FileCheck --check-prefixes=CHECK-NO-SCRIPT %s
+
+// CHECK-SCRIPT: {{ld(\.exe)?}}"
+// CHECK-SCRIPT-SAME: "--default-script" "[[SCRIPT]].script"
+
+// CHECK-NO-SCRIPT: {{ld(\.exe)?}}"
+// CHECK-NO-SCRIPT-NOT: "--default-script"
+
 // Test that -static is forwarded to the linker
 
 // RUN: %clang --target=x86_64-sie-ps5 -static %s -### 2>&1 | FileCheck --check-prefixes=CHECK-STATIC %s

``````````

</details>


https://github.com/llvm/llvm-project/pull/114546