std.debug: fix FP unwinding for LoongArch

alexrp · xtexx · commit 15f8b5811974 · 2025-12-06T17:42:35.000+08:00
(cherry picked from commit 3f5e782) Change-Id: I34e022264f24d47fb837da61ec0197f6e0138284 Signed-off-by: xtex <xtexchooser@duck.com>
diff --git a/lib/std/debug.zig b/lib/std/debug.zig
@@ -848,7 +848,7 @@ pub const StackIterator = struct {
     }
 
     // Offset of the saved BP wrt the frame pointer.
-    const fp_offset = if (native_arch.isRISCV())
+    const fp_offset = if (native_arch.isLoongArch() or native_arch.isRISCV())
         // On RISC-V the frame pointer points to the top of the saved register
         // area, on pretty much every other architecture it points to the stack
         // slot where the previous frame pointer is saved.

Original file line number	Diff line number	Diff line change
`@@ -848,7 +848,7 @@ pub const StackIterator = struct {`
`848`	`848`	`}`
`849`	`849`
`850`	`850`	`// Offset of the saved BP wrt the frame pointer.`
`851`		`- const fp_offset = if (native_arch.isRISCV())`
	`851`	`+ const fp_offset = if (native_arch.isLoongArch() or native_arch.isRISCV())`
`852`	`852`	`// On RISC-V the frame pointer points to the top of the saved register`
`853`	`853`	`// area, on pretty much every other architecture it points to the stack`
`854`	`854`	`// slot where the previous frame pointer is saved.`