Re: sparc64/ofwboot: initialize BSS before entering

On Tue, 18 Aug 2026 02:15:50 +0200,
"Theo de Raadt" <[email protected]> wrote:
> 
> This must have been very painful to debug.
> 

Yes, absolutley.

But it was inside qemu and here:

(qemu) info registers

CPU#0
pc: 000001fff000d8fc  npc: 000001fff000d900
%g0-3: 0000000000000000 0000000000000034 000001ff00000000 000001fff00808b8
%g4-7: 00000000000808b8 0000000000000000 0000000000000000 0000000000000000
%o0-3: 000001fe020003f8 000001fff00808f6 00000000001009f4 0000000000000000
%o4-7: 00000000ffeb6400 0000000000000000 00000000ffe90f51 000001fff000d8f4
%l0-3: 0000000000000006 00000000ffe91561 ffffffffffe33b31 00000000ffeb6400
%l4-7: 0000000000000000 00000000ffd00000 0000000000000000 00000000ffd0d904
%i0-3: 00000000000005c0 00000000000005e0 ffffffffffffffff 695a774b161c121a
%i4-7: 00000000ffd0d904 0000000000000000 00000000ffe91001 0000000000103088
%f00:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
%f08:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
%f16:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
%f24:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
%f32:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
%f40:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
%f48:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
%f56:  0000000000000000 0000000000000000 0000000000000000 0000000000000000
pstate: 00000015 ccr: 44 (icc: -Z-- xcc: -Z--) asi: 1d tl: 1 pil: 0 gl: 2
tbr: 00000000ffd00000 hpstate: 0000000000000000 htba: 0000000000000000
cansave: 7 canrestore: 0 otherwin: 0 wstate: 0 cleanwin: 7 cwp: 2
fsr: 0000000000000000 y: 0000000000000000 fprs: 0000000000000000

(qemu)

which makes it possible to debug.

-- 
wbr, Kirill