zig

commit 1c6bee08340d23a17cbed67e171d993ab69c1152 (tree)
parent 6fac71ec74a54792334381b739310685f4b38ba3
Author: Alex Rønne Petersen <alex@alexrp.com>
Date:   Sun, 21 Jul 2024 17:18:13 +0200

std.os.linux.start_pie: Add s390x support.

Diffstat:
M
lib/std/os/linux/start_pie.zig
 | 
12
++++++++++++

1 file changed, 12 insertions(+), 0 deletions(-)
diff --git a/lib/std/os/linux/start_pie.zig b/lib/std/os/linux/start_pie.zig
@@ -10,6 +10,7 @@ const R_AARCH64_RELATIVE = 1027;
 const R_LARCH_RELATIVE = 3;
 const R_68K_RELATIVE = 22;
 const R_RISCV_RELATIVE = 3;
+const R_390_RELATIVE = 12;
 const R_SPARC_RELATIVE = 22;
 
 const R_RELATIVE = switch (builtin.cpu.arch) {
@@ -20,6 +21,7 @@ const R_RELATIVE = switch (builtin.cpu.arch) {
     .loongarch32, .loongarch64 => R_LARCH_RELATIVE,
     .m68k => R_68K_RELATIVE,
     .riscv64 => R_RISCV_RELATIVE,
+    .s390x => R_390_RELATIVE,
     else => @compileError("Missing R_RELATIVE definition for this target"),
 };
 
@@ -82,6 +84,16 @@ fn getDynamicSymbol() [*]elf.Dyn {
             \\ lla %[ret], _DYNAMIC
             : [ret] "=r" (-> [*]elf.Dyn),
         ),
+        .s390x => asm volatile (
+            \\ .weak _DYNAMIC
+            \\ .hidden _DYNAMIC
+            \\ larl %[ret], 1f
+            \\ agf %[ret], 0(%[ret])
+            \\ b 2f
+            \\ 1: .long _DYNAMIC - .
+            \\ 2:
+            : [ret] "=r" (-> [*]elf.Dyn),
+        ),
         else => {
             @compileError("PIE startup is not yet supported for this target!");
         },