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aarch64: handle .stack_argument_offset as a valid local var

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This commit is contained in:
Jakub Konka 2022-11-09 19:58:14 +01:00
parent df09d9c14a
commit 31e755df6f
1 changed files with 11 additions and 4 deletions
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15
src/arch/aarch64/CodeGen.zig
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@ -261,14 +261,23 @@ const DbgInfoReloc = struct {
.ptr_stack_offset,
.stack_offset,
=> |off| {
.stack_argument_offset,
=> |offset| {
const adjusted_offset = switch (reloc.mcv) {
.ptr_stack_offset,
.stack_offset,
=> -@intCast(i32, offset),
.stack_argument_offset => @intCast(i32, function.saved_regs_stack_space + offset),
else => unreachable,
};
try dbg_info.ensureUnusedCapacity(7);
const fixup = dbg_info.items.len;
dbg_info.appendSliceAssumeCapacity(&[2]u8{ // DW.AT.location, DW.FORM.exprloc
1, // we will backpatch it after we encode the displacement in LEB128
Register.x29.dwarfLocOpDeref(), // frame pointer
});
leb128.writeILEB128(dbg_info.writer(), -@intCast(i32, off)) catch unreachable;
leb128.writeILEB128(dbg_info.writer(), adjusted_offset) catch unreachable;
dbg_info.items[fixup] += @intCast(u8, dbg_info.items.len - fixup - 2);
},
@ -353,8 +362,6 @@ const DbgInfoReloc = struct {
});
},
.stack_argument_offset => unreachable,
else => {
try dbg_info.ensureUnusedCapacity(2);
dbg_info.appendSliceAssumeCapacity(&[2]u8{ // DW.AT.location, DW.FORM.exprloc