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std.debug: fix frame pointer unwinding on or1k

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Alex Rønne Petersen 2025-10-18 15:01:48 +02:00
parent 5e57ed9fda
commit 49cd0e6f7c
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1 changed files with 5 additions and 1 deletions
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6
lib/std/debug.zig
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@ -988,6 +988,8 @@ const StackIterator = union(enum) {
// On LoongArch and RISC-V, the frame pointer points to the top of the saved register area,
// in which the base pointer is the first word.
if (native_arch.isLoongArch() or native_arch.isRISCV()) break :off -2 * @sizeOf(usize);
// On OpenRISC, the frame pointer is stored below the return address.
if (native_arch == .or1k) break :off -2 * @sizeOf(usize);
// On SPARC, the frame pointer points to the save area which holds 16 slots for the local
// and incoming registers. The base pointer (i6) is stored in its customary save slot.
if (native_arch.isSPARC()) break :off 14 * @sizeOf(usize);
@ -999,7 +1001,9 @@ const StackIterator = union(enum) {
const fp_to_ra_offset = off: {
// On LoongArch and RISC-V, the frame pointer points to the top of the saved register area,
// in which the return address is the second word.
if (native_arch.isRISCV() or native_arch.isLoongArch()) break :off -1 * @sizeOf(usize);
if (native_arch.isLoongArch() or native_arch.isRISCV()) break :off -1 * @sizeOf(usize);
// On OpenRISC, the return address is stored below the stack parameter area.
if (native_arch == .or1k) break :off -1 * @sizeOf(usize);
if (native_arch.isPowerPC64()) break :off 2 * @sizeOf(usize);
// On s390x, r14 is the link register and we need to grab it from its customary slot in the
// register save area (ELF ABI s390x Supplement §1.2.2.2).