[Qemu-devel] [PATCH] linuxboot_dma: compile for i486

[Paolo Bonzini]

The ROM uses the cmovne instruction, which is new in Pentium Pro and does not
work when running QEMU with "-cpu 486".  Avoid producing that instruction.

Suggested-by: Richard W.M. Jones <address@hidden>
Suggested-by: Thomas Huth <address@hidden>
Reported-by: Rob Landley <address@hidden>
Cc: address@hidden
Signed-off-by: Paolo Bonzini <address@hidden>
---
 pc-bios/linuxboot_dma.bin  | Bin 1536 -> 1536 bytes
 pc-bios/optionrom/Makefile |   1 +
 2 files changed, 1 insertion(+)

diff --git a/pc-bios/linuxboot_dma.bin b/pc-bios/linuxboot_dma.bin
index 
218d3ab4a29bfb5ab7125ec7a4d29dad1860c673..d176f62797813e4b926dca9dfce7ce554dc1a4d6
 100644
GIT binary patch
literal 1536
zcmeHFL2J`s82-{_T52KL%w~}udiW-YBE*9t=s~ClrIm^s9^6H6Pf%onr07*+kWd=L
zpW)d<4G1ZESU1FyUDSCf^YYaxioy<}t?!rmu^#*f?mHxJo;-Qp_kHp#Je^o$|2##;
zYs)n)qh6k7XI07O)9TW>>address@hidden@+rpuZy7{g_FpG^eo
zuoD<address@hidden>a?#S!%6CsARNbiO)address@hidden
ze8y7!akTy&address@hidden)Mtxe(3DE2)a5;c%$H0|Yu~mbnR0C7dKHR7Zsr
zmrccq5lm%U=wXc39<t?-(_m*ZnY&YH(d(0lj;0`jj8e`iWgX(jV5j3gg<B9Cgj2^d
zw;address@hidden<ui*Zsgx!lc)pgIq-atzea+i1H+3Oj<V?5-VpBVlz4R#!?
zV3N_sX!mjsj*#|9H8ozR&D5ajsurT@(W<h&xG*;8UNvYI;address@hidden;AnvgFCdyy
zI>address@hidden<bD(|L-BW|R)`qY*CS(3SQRXOVJqcpcuB8NLnUuosH3
zi{OJ7mufeeG{^49xY<M4U)CrSC7Fp}TjtSE>UkNnpxu8npp2ruY0}SsKn=BiGN9Y;
L*>&K*abWuoMsO(*

literal 1536
zcmeHF&ubGw6rN4Dn#RCxYN|nUh%gpJFME=L9)#^}1F5!ps0f07iy|#(O1<iu!xFNH
ze}?~naY4vZ57wZB1jMR`ST7r__~R&=_04QYJoq2jIn2&address@hidden|address@hidden<
zD>address@hidden;?V$SuIwL6uYt5>dGyH&BPBIn1?(K>address@hidden
address@hidden>Z7QOZy_v)9!Gc_A*CUnxyOgP~7<address@hidden
z*1p4gW?~r|cz_FdqLT)y8y*s0Z-)z#_;!*cE?PD>cN4<HA{;MET(E~F0*Ke4l-T|Q
zN3kAs(B4Nz%(_i>CX-n&AUsLGXj9UuS(2NP%(`OENoGw|EGqnf#7ASHq-k?KrExJ~
z^CHnSr*VvZO%mMQmY+taei4m+{T$|c^(w4)XlpT*^|#=^eK`aF_0%gE_5j9w)aV=c
zk7$UtO_Fkt>S!)address@hidden(na#Hj4<S)0RarUXZ%Tp{&xoU+SGxcuC<|i62e-
zaCiw}LGfe}PpSO8%0DRczx~>MfwIDj65o<address@hidden(<_yF`A
address@hidden;8HfA4iFwHr(rWNnH$vl3XJyEGJ>hT<|dXkK7E?qHJ9XdoKqMjysh
address@hidden)N{RVuA8xQ~h

diff --git a/pc-bios/optionrom/Makefile b/pc-bios/optionrom/Makefile
index fa53d9e58e..a9a9e5e7eb 100644
--- a/pc-bios/optionrom/Makefile
+++ b/pc-bios/optionrom/Makefile
@@ -13,6 +13,7 @@ $(call set-vpath, $(SRC_PATH)/pc-bios/optionrom)
 ifeq ($(lastword $(filter -O%, -O0 $(CFLAGS))),-O0)
 override CFLAGS += -O2
 endif
+override CFLAGS += -march=i486
 
 # Drop -fstack-protector and the like
 QEMU_CFLAGS := $(filter -W%, $(QEMU_CFLAGS)) $(CFLAGS_NOPIE) -ffreestanding
-- 
2.13.0