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[Qemu-devel] Suggested stubs for coming a bit closer to functional nativ
|
From: |
Martin Bochnig |
|
Subject: |
[Qemu-devel] Suggested stubs for coming a bit closer to functional native sparcv9 HOST support: |
|
Date: |
Thu, 05 Oct 2006 14:31:54 +0200 |
|
User-agent: |
Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.7) Gecko/20041221 |
Hi,
<<qemu-0.8.2-solaris20060930__v9_stubs.gdiff>>
## only a messy personal testing-snapshot FYI, with no compatibility or
clarity in mind
## a gdiff -Nurb against 20060930's
http://www.opensolaris.org/os/project/qemu/downloads/qemu-0.8.2-solaris.tar.gz
Current Status:
=============
This is still the very best I can get on an OpenSolaris sparc64 host
when cd'ing to linux-test (from
http://www.qemu.com/linux-test-0.5.1.tar.gz) and running
#
/tmp/Q_E_M_U/sparcv9_testing/qemu-0.8.2-solaris__v9_stubs/i386-softmmu/qemu
-nographic -hda linux.img -kernel bzImage-2.4.21 -append "console=ttyS0
root=/dev/hda sb=0x220,5,1,5 ide2=noprobe ide3=noprobe ide4=noprobe
ide5=noprobe" -d all :
# uname -a
SunOS mb1x-ws1 5.11 snv_41 sun4u sparc SUNW,Sun-Fire-280R
# isainfo -k
sparcv9
# ls -al /tmp/qemu.log
-rw-r--r-- 1 root root 2022 Oct 5 13:03 /tmp/qemu.log
# cat /tmp/qemu.log
EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000600
ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000
EIP=0000fff0 EFL=00000002 [-------] CPL=0 II=0 A20=1 HLT=0
ES =0000 00000000 0000ffff 00000000
CS =f000 ffff0000 0000ffff 00000000
SS =0000 00000000 0000ffff 00000000
DS =0000 00000000 0000ffff 00000000
FS =0000 00000000 0000ffff 00000000
GS =0000 00000000 0000ffff 00000000
LDT=0000 00000000 0000ffff 00008000
TR =0000 00000000 0000ffff 00008000
GDT= 00000000 0000ffff
IDT= 00000000 0000ffff
CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000000
CCS=00000000 CCD=00000000 CCO=EFLAGS
----------------
IN:
0xfffffff0: ljmp $0xf000,$0xe05b
OP:
0x0000: movl_T0_im 0xf000
0x0001: movl_T1_imu 0xe05b
0x0002: movl_seg_T0_vm 0x4c
0x0003: movl_T0_T1
0x0004: jmp_T0
0x0005: movl_T0_0
0x0006: exit_tb
0x0007: end
AFTER FLAGS OPT:
0x0000: movl_T0_im 0xf000
0x0001: movl_T1_imu 0xe05b
0x0002: movl_seg_T0_vm 0x4c
0x0003: movl_T0_T1
0x0004: jmp_T0
0x0005: movl_T0_0
0x0006: exit_tb
0x0007: end
OUT: [size=124]
0x101242060: sethi %hi(0), %o5
0x101242064: or %o5, 1, %o5 ! 0x1
0x101242068: unknown
0x10124206c: sethi %hi(0x11f9400), %o4
0x101242070: add %o5, %o4, %o5
0x101242074: mov %o5, %o5
0x101242078: mov %o5, %g4
0x10124207c: sethi %hi(0), %o5
0x101242080: or %o5, 1, %o5 ! 0x1
0x101242084: unknown
0x101242088: sethi %hi(0x11f9400), %o4
0x10124208c: add %o5, %o4, %o5
0x101242090: or %o5, 0x5b, %o5
0x101242094: mov %o5, %g5
0x101242098: sethi %hi(0xfc00), %o5
0x10124209c: or %o5, 0x3ff, %o5 ! 0xffff
0x1012420a0: and %g4, %o5, %o3
0x1012420a4: sethi %hi(0), %o5
0x1012420a8: or %o5, 1, %o5 ! 0x1
0x1012420ac: unknown
0x1012420b0: sethi %hi(0x11f9400), %o4
0x1012420b4: add %o5, %o4, %o5
0x1012420b8: or %o5, 0x4c, %o5
0x1012420bc: add %g3, %o5, %o5
0x1012420c0: st %o3, [ %o5 ]
0x1012420c4: sll %o3, 4, %o3
0x1012420c8: st %o3, [ %o5 + 4 ]
0x1012420cc: mov %g5, %g4
0x1012420d0: st %g4, [ %g3 + 0x20 ]
0x1012420d4: clr %g4
0x1012420d8: jmp %i0 + 8
# file
/tmp/Q_E_M_U/sparcv9_testing/qemu-0.8.2-solaris__v9_stubs/i386-softmmu/qemu
i386-softmmu/qemu: ELF 64-bit MSB executable SPARCV9 Version 1,
dynamically linked, not stripped
#
Summary
=========
I know, being able to natively build for sparcv9 is not "required" by
any means (because ultrasparc asm [i.e. ticks] _can_ already be used via
sparcv8plus [which is basically 32bit with UltraSPARC extensions / no
v8plus cpu ever existed], no sparc-X-sparc kqemu LKM driver exists as of
now that would make building for sparcv9 a requirement, and of course
can qemu be built now for v8plus, v8 or v7 [special thanks again to
Juergen Keil and Johannes Schindelin] and then be run under a booted
sparcv9 host kernel), but it would be interesting to see, how one would
get it working / what is still missing.
References:
http://www.cs.utexas.edu/users/novak/sparcv9.pdf
http://libvncserver.sourceforge.net/qemu/qemu-porting.html
http://www.qemu.com/qemu-tech.html
p.s. I finally return to the rather trivial task of bringing the
promised SUNWqemu and CSWqemu packages out, plus a patch against
http://www.qemu.com/qemu-0.8.2.tar.gz
Globally switching to current CVS afterwards (already tested it on sparc32).
I apologize for the delay.
Regards,
Maddin
http://www.martux.org
diff -Nurb ./qemu-0.8.2-solaris__20060930/Makefile
./qemu-0.8.2-solaris__v9_stubs/Makefile
--- ./qemu-0.8.2-solaris__20060930/Makefile 2006-09-13 09:40:58.000000000
+0200
+++ ./qemu-0.8.2-solaris__v9_stubs/Makefile 2006-10-05 11:23:34.109516000
+0200
@@ -5,12 +5,12 @@
.PHONY: all clean distclean dvi info install install-doc tar tarbin \
speed test test2 html dvi info
-CFLAGS+=-Wall -O2 -g -fno-strict-aliasing -I.
+CFLAGS+=-Wall -O1 -g -fno-strict-aliasing -I.
ifdef CONFIG_DARWIN
CFLAGS+= -mdynamic-no-pic
endif
ifeq ($(ARCH),sparc)
-CFLAGS+=-mcpu=ultrasparc
+CFLAGS+=-mcpu=ultrasparc -O2
endif
LDFLAGS+=-g
LIBS=
diff -Nurb ./qemu-0.8.2-solaris__20060930/Makefile.target
./qemu-0.8.2-solaris__v9_stubs/Makefile.target
--- ./qemu-0.8.2-solaris__20060930/Makefile.target 2006-09-13
09:40:58.000000000 +0200
+++ ./qemu-0.8.2-solaris__v9_stubs/Makefile.target 2006-10-05
12:11:45.427095200 +0200
@@ -17,7 +17,7 @@
VPATH+=:$(SRC_PATH)/linux-user
DEFINES+=-I$(SRC_PATH)/linux-user -I$(SRC_PATH)/linux-user/$(TARGET_ARCH)
endif
-CFLAGS+=-Wall -O2 -g -fno-strict-aliasing
+CFLAGS+=-Wall -O1 -g -fno-strict-aliasing
#CFLAGS+=-Werror
LDFLAGS+=-g
LIBS=
@@ -108,7 +108,7 @@
ifeq ($(ARCH),sparc)
ifeq ($(CONFIG_SOLARIS),yes)
-CFLAGS+=-mcpu=ultrasparc -m32 -ffixed-g2 -ffixed-g3
+CFLAGS+=-mcpu=ultrasparc -m32 -ffixed-g1 -ffixed-g2 -ffixed-g4 -ffixed-g5
-ffixed-g6 -ffixed-g7 -ffixed-l0 -ffixed-l1 -ffixed-l2 -ffixed-l3
LDFLAGS+=-m32
OP_CFLAGS=$(CFLAGS) -fno-delayed-branch -fno-omit-frame-pointer -ffixed-i0
else
@@ -122,10 +122,12 @@
endif
ifeq ($(ARCH),sparc64)
-CFLAGS+=-mcpu=ultrasparc -m64 -ffixed-g1 -ffixed-g4 -ffixed-g5 -ffixed-g7
+CFLAGS+=-mcpu=ultrasparc -m64 -ffixed-g1 -ffixed-g2 -ffixed-g4 -ffixed-g5
-ffixed-g6 -ffixed-g7 -ffixed-l0 -ffixed-l1 -ffixed-l2 -ffixed-l3
LDFLAGS+=-m64
-LDFLAGS+=-Wl,-T,$(SRC_PATH)/sparc64.ld
+# LDFLAGS+=-Wl,-T,$(SRC_PATH)/sparc64.ld
+# only when linking with gld
OP_CFLAGS=$(CFLAGS) -fno-delayed-branch -ffixed-i0
+DEFINES+=-D__sparc_v9__
endif
ifeq ($(ARCH),alpha)
@@ -417,7 +419,8 @@
ifeq ($(ARCH),sparc64)
VL_LDFLAGS+=-m64
-VL_LDFLAGS+=-Wl,-T,$(SRC_PATH)/sparc64.ld
+# VL_LDFLAGS+=-Wl,-T,$(SRC_PATH)/sparc64.ld
+# only when linking with gld
endif
ifeq ($(CONFIG_SOLARIS),yes)
diff -Nurb ./qemu-0.8.2-solaris__20060930/configure
./qemu-0.8.2-solaris__v9_stubs/configure
--- ./qemu-0.8.2-solaris__20060930/configure 2006-09-13 09:44:11.000000000
+0200
+++ ./qemu-0.8.2-solaris__v9_stubs/configure 2006-10-05 11:47:42.903664400
+0200
@@ -24,9 +24,9 @@
cc="gcc"
host_cc="gcc"
ar="ar"
-make="make"
-install="install"
-strip="strip"
+make="gmake"
+install="ginstall"
+strip="gstrip"
cpu=`uname -m`
target_list=""
case "$cpu" in
@@ -51,7 +51,7 @@
s390)
cpu="s390"
;;
- sparc|sun4[muv])
+ sparc|sun4[cdmuv])
cpu="sparc"
;;
sparc64)
@@ -98,6 +98,13 @@
build_acpi_tables="no"
force_64bit="no"
force_64bitflags=""
+build_for_sparcv7="no"
+build_for_sparcv7flags=""
+build_for_sparcv8="no"
+build_for_sparcv8flags=""
+build_for_sparcv8plus="no"
+build_for_sparcv8plusflags=""
+
uname_release=""
# OS specific
@@ -247,29 +254,45 @@
;;
--force-64bit)
force_64bit="yes"
- CFLAGS="$CFLAGS -m64 -mpreferred-stack-boundary=4 -fomit-frame-pointer"
LDFLAGS="$LDFLAGS -m64"
force_64bitflags="-m64"
case "$cpu" in
i386)
- echo "Forcing 64-bit mode, changing CPU from $cpu to x86_64"
+ echo "Forcing 64-bit mode, changing HOST-CPU from $cpu to x86_64"
cpu="x86_64"
+ CFLAGS="$CFLAGS -m64 -mpreferred-stack-boundary=4
-fomit-frame-pointer"
;;
sparc*)
- echo "Forcing 64-bit mode, changing CPU from $cpu to sparc64"
+ echo "Developers only: Forcing 64-bit mode, changing HOST-CPU from
$cpu to sparc64"
cpu="sparc64"
+ CFLAGS="$CFLAGS -m64 -fomit-frame-pointer"
;;
*)
echo "Forcing 64-bit mode"
;;
esac
;;
+ --build_for_sparcv7)
+ build_for_sparcv7="yes"
+ CFLAGS="$CFLAGS -m32 -mcpu=v7 -fomit-frame-pointer"
+ LDFLAGS="$LDFLAGS -m32"
+ ;;
+ --build_for_sparcv8)
+ build_for_sparcv8="yes"
+ CFLAGS="$CFLAGS -m32 -mcpu=v8 -fomit-frame-pointer"
+ LDFLAGS="$LDFLAGS -m32"
+ ;;
+ --build_for_sparcv8plus)
+ build_for_sparcv8plus="yes"
+ CFLAGS="$CFLAGS -m32 -mcpu=ultrasparc -fomit-frame-pointer"
+ LDFLAGS="$LDFLAGS -m32"
+ ;;
esac
done
# Checking for CFLAGS
if test -z "$CFLAGS"; then
- CFLAGS="-O2"
+ CFLAGS="-O1"
fi
if test x"$show_help" = x"yes" ; then
@@ -314,6 +337,9 @@
echo " --enable-uname-release=R Return R for uname -r in usermode emulation"
echo " --enable-iasl compilation of ACPI tables with the IASL
compiler"
echo " --force-64bit force 64-bit compilation (Solaris x86/x64
only)"
+echo " --build_for_sparcv7 force compilation for sparcv7 HOST-CPU"
+echo " --build_for_sparcv8 force compilation for sparcv8 HOST-CPU"
+echo " --build_for_sparcv8plus force compilation for sparcv8plus
HOST-CPU"
echo ""
echo "NOTE: The object files are build at the place where configure is
launched"
exit 1
@@ -489,7 +515,7 @@
int main( void ) { return SDL_Init (SDL_INIT_VIDEO); }
EOF
-if $cc $force_64bitflags -o $TMPE `$sdl_config --cflags 2> /dev/null` $TMPC
`$sdl_config --libs 2> /dev/null` 2> /dev/null ; then
+if $cc $force_64bitflags $build_for_sparcv7flags $build_for_sparcv8flags
$build_for_sparcv8plusflags -o $TMPE `$sdl_config --cflags 2> /dev/null` $TMPC
`$sdl_config --libs 2> /dev/null` 2> /dev/null ; then
_sdlversion=`$sdl_config --version | sed 's/[^0-9]//g'`
if test "$_sdlversion" -lt 121 ; then
sdl_too_old=yes
diff -Nurb ./qemu-0.8.2-solaris__20060930/cpu-all.h
./qemu-0.8.2-solaris__v9_stubs/cpu-all.h
--- ./qemu-0.8.2-solaris__20060930/cpu-all.h 2006-07-22 19:23:34.000000000
+0200
+++ ./qemu-0.8.2-solaris__v9_stubs/cpu-all.h 2006-10-01 02:15:12.000000000
+0200
@@ -971,7 +971,7 @@
return val;
}
-#elif defined(__sparc_v9__)
+#elif defined(__sparc__)
static inline int64_t cpu_get_real_ticks (void)
{
diff -Nurb ./qemu-0.8.2-solaris__20060930/dyngen-exec.h
./qemu-0.8.2-solaris__v9_stubs/dyngen-exec.h
--- ./qemu-0.8.2-solaris__20060930/dyngen-exec.h 2006-07-22
19:23:34.000000000 +0200
+++ ./qemu-0.8.2-solaris__v9_stubs/dyngen-exec.h 2006-10-05
13:37:58.665144200 +0200
@@ -38,7 +38,7 @@
// Linux/Sparc64 defines uint64_t
#if !(defined (__sparc_v9__) && defined(__linux__))
/* XXX may be done for all 64 bits targets ? */
-#if defined (__x86_64__) || defined(__ia64)
+#if defined(__x86_64__) || defined(__ia64) || defined(__sparc_v9__)
typedef unsigned long uint64_t;
#else
typedef unsigned long long uint64_t;
@@ -55,7 +55,7 @@
typedef signed int int32_t;
// Linux/Sparc64 defines int64_t
#if !(defined (__sparc_v9__) && defined(__linux__))
-#if defined (__x86_64__) || defined(__ia64)
+#if defined(__x86_64__) || defined(__ia64) || defined(__sparc_v9__)
typedef signed long int64_t;
#else
typedef signed long long int64_t;
@@ -126,19 +126,25 @@
#define AREG2 "s1"
#define AREG3 "s2"
#endif
+
#ifdef __sparc__
#ifdef HOST_SOLARIS
-#define AREG0 "g2"
-#define AREG1 "g3"
-#define AREG2 "g4"
-#define AREG3 "g5"
-#define AREG4 "g6"
-#else
-#ifdef __sparc_v9__
-#define AREG0 "g1"
+#define AREG0 "g3"
#define AREG1 "g4"
#define AREG2 "g5"
-#define AREG3 "g7"
+#define AREG3 "g6"
+/* #define AREG4 "l0" */
+/* Solaris sparcv8/v8plus versus sparcv9 ABI: g0 is always 0, g1 gets
clobbered
+ * after function call, g2 cannot be used on v9 due to ABI and libm warning,
g7
+ * gets clobbered, g3 does _not_ give libm caused /usr/ccs/bin/ld
MSG_STO_REGISTERG3 warning
+ * anymore (see
http://cvs.opensolaris.org/source/raw/on/usr/src/cmd/sgs/libld/common/libld.sparc.msg),
+ * now that we manually define -D__sparc_v9__
+ * inputs or outputs cannot be used at all, due to shifting rw,
+ * locals can potentially be used, if they are saved and restored each time
+ * (see cpu-exec.c)
+ * sparc-LinUX's ABI seems to be less restrictive here, just downloading a
recent Aurora ...
+ */
+
#else
#define AREG0 "g6"
#define AREG1 "g1"
diff -Nurb ./qemu-0.8.2-solaris__20060930/dyngen.c
./qemu-0.8.2-solaris__v9_stubs/dyngen.c
--- ./qemu-0.8.2-solaris__20060930/dyngen.c 2006-07-22 19:23:34.000000000
+0200
+++ ./qemu-0.8.2-solaris__v9_stubs/dyngen.c 2006-10-01 08:48:03.000000000
+0200
@@ -2270,6 +2270,38 @@
reloc_offset, reloc_offset, name, addend,
reloc_offset);
break;
+
+
+
+ case R_SPARC_HH22:
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x00000000) "
+ " | (((%s + %d) >> 42) & 0x00000000);\n",
+ reloc_offset, reloc_offset, name, addend);
+ break;
+
+ case R_SPARC_LM22:
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x00000000) "
+ " | (((%s + %d) >> 10) & 0x00000000);\n",
+ reloc_offset, reloc_offset, name, addend);
+ break;
+
+ case R_SPARC_HM10:
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x00000000) "
+ " | ((((%s + %d) >> 32 & 0x3ff)) &
0x00000000);\n",
+ reloc_offset, reloc_offset, name, addend);
+ break;
+
+
+
default:
error("unsupported sparc64 relocation (%d) for
symbol %s", type, name);
}
diff -Nurb ./qemu-0.8.2-solaris__20060930/elf.h
./qemu-0.8.2-solaris__v9_stubs/elf.h
--- ./qemu-0.8.2-solaris__20060930/elf.h 2006-07-22 19:23:34.000000000
+0200
+++ ./qemu-0.8.2-solaris__v9_stubs/elf.h 2006-10-01 01:39:27.000000000
+0200
@@ -328,6 +328,9 @@
#define R_SPARC_11 31
#define R_SPARC_64 32
#define R_SPARC_OLO10 33
+#define R_SPARC_HH22 34
+#define R_SPARC_HM10 35
+#define R_SPARC_LM22 36
#define R_SPARC_WDISP16 40
#define R_SPARC_WDISP19 41
#define R_SPARC_7 43
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Martin Bochnig <=