Fri, Sep 26, 2014 at 07:52:02PM +0400, Andrei Borzenkov wrote: > В Thu, 25 Sep 2014 19:48:04 -0300 > Paulo Flabiano Smorigo <pfsmor...@linux.vnet.ibm.com> пишет: > > > Sun, Sep 21, 2014 at 06:24:25PM +0400, Andrei Borzenkov wrote: > > > В Sun, 21 Sep 2014 17:58:44 +0400 > > > Andrei Borzenkov <arvidj...@gmail.com> пишет: > > > > > > > В Thu, 28 Aug 2014 16:56:02 -0300 > > > > Paulo Flabiano Smorigo <pfsmor...@linux.vnet.ibm.com> пишет: > > > > > > > > > From: Paulo Flabiano Smorigo <pfsmor...@br.ibm.com> > > > > > > > > > > Hi, > > > > > > > > > > At the beginning of the year we provide a patchset that enabled GRUB > > > > > for > > > > > little-endian PowerPC. Our approach at the time was to build GRUB > > > > > itself and > > > > > its tools in 64-bit little-endian. One of the reasons of build in > > > > > 64-bit is > > > > > to avoid 32-bit dependencies in the distro and build a system > > > > > entirely 64-bit. > > > > > > > > > > This patchset was not welcomed at the time because it would bring a > > > > > high-maintainance-cost, without real gain since it could just be > > > > > cross-compiled. > > > > > > > > > > After that, Brent Baude, Vladmir (phcoder) and I started to work in a > > > > > solution > > > > > that would cross-compile but without 32-bit dependencies. This > > > > > patchset is the > > > > > result of this new approach. It's based on the work of Brent Baude, > > > > > Vladimir > > > > > (phcoder), and Tomohiro. > > > > > > > > > > It can be devided in two parts: > > > > > > > > > > 1) Skip libgcc dependency just for ppc64el (patch 1 and 2); > > > > > 2) Check elf endianess and byteswap if necessary (patch 3); > > > > > > > > > > The result is GRUB itself in 32-bit BE and its tools in 64-bit LE. > > > > > This solution > > > > > satisfies the needs of the distros. I tested it in three different > > > > > distros, in > > > > > both endianess and it's fine. > > > > > > > > > > > > > Unfortunately I'm still not able to boot this version on QEMU. I build > > > > on openSUSE for three acrhs - ppc, ppc64, ppc64le. First two are OK and > > > > boot successfully. Third one does not work - it ends up in exception. I > > > > get initial GRUB greeting and that's all. > > > > > > > > Same problem I got with Vladimir libgcc patch series. > > > > > > > > It could be toolkit issue of course; but still it would need fixing > > > > before we can merge it. > > > > > > > > Could you help in debugging this issue? I have near to zero experience > > > > with PPC; I can do what you tell me, but not much more. > > > > > > > > I run it with > > > > > > > > qemu-system-ppc64 -M pseries -cdrom /tmp/grub2-ppc64le.iso -boot d > > > > > > > > Attached is screenshot of error. > > > > > > > > > > > > > > And here is the difference in generated code in case it helps (one > > > random module as example) ... > > > > > > --- /tmp/a1 2014-09-21 18:19:59.316494117 +0400 > > > +++ /tmp/a2 2014-09-21 18:20:06.169398736 +0400 > > > @@ -1,5 +1,5 @@ > > > > > > -usr.ppc/lib/grub2/powerpc-ieee1275/ext2.mod: file format > > > elf32-powerpc > > > +usr.ppc64le/lib/grub2/powerpc-ieee1275/ext2.mod: file format > > > elf32-powerpc > > > > > > > > > Disassembly of section .text: > > > @@ -18,15 +18,15 @@ Disassembly of section .text: > > > 28: 38 21 00 10 addi r1,r1,16 > > > 2c: 7c 08 03 a6 mtlr r0 > > > 30: 4e 80 00 20 blr > > > - 34: 94 21 ff a0 stwu r1,-96(r1) > > > + 34: 94 21 ff 90 stwu r1,-112(r1) > > > 38: 38 e3 00 28 addi r7,r3,40 > > > 3c: 7d 80 00 26 mfcr r12 > > > 40: 39 23 00 14 addi r9,r3,20 > > > 44: 7c 08 02 a6 mflr r0 > > > 48: 39 43 00 18 addi r10,r3,24 > > > - 4c: bf 61 00 4c stmw r27,76(r1) > > > - 50: 90 01 00 64 stw r0,100(r1) > > > - 54: 91 81 00 48 stw r12,72(r1) > > > + 4c: bf 61 00 5c stmw r27,92(r1) > > > + 50: 90 01 00 74 stw r0,116(r1) > > > + 54: 91 81 00 58 stw r12,88(r1) > > > 58: 3b c4 ff ff addi r30,r4,-1 > > > 5c: 7c 7f 1b 78 mr r31,r3 > > > 60: 7c bc 2b 78 mr r28,r5 > > > @@ -103,10 +103,10 @@ Disassembly of section .text: > > > 17c: 2f 83 00 00 cmpwi cr7,r3,0 > > > 180: 41 9e 00 08 beq cr7,188 <grub_mod_init-0xd50> > > > 184: 81 3d 00 00 lwz r9,0(r29) > > > - 188: 81 81 00 48 lwz r12,72(r1) > > > - 18c: 39 61 00 60 addi r11,r1,96 > > > + 188: 81 81 00 58 lwz r12,88(r1) > > > + 18c: 39 61 00 70 addi r11,r1,112 > > > 190: 7d 23 4b 78 mr r3,r9 > > > - 194: 7d 80 81 20 mtcrf 8,r12 > > > + 194: 7d 90 81 20 mtocrf 8,r12 > > > 198: 48 00 00 00 b 198 <grub_mod_init-0xd40> > > > 19c: 94 21 ff e0 stwu r1,-32(r1) > > > 1a0: 7c 08 02 a6 mflr r0 > > > @@ -234,10 +234,10 @@ Disassembly of section .text: > > > 388: 39 61 00 20 addi r11,r1,32 > > > 38c: 80 69 00 00 lwz r3,0(r9) > > > 390: 48 00 00 00 b 390 <grub_mod_init-0xb48> > > > - 394: 94 21 ff b0 stwu r1,-80(r1) > > > + 394: 94 21 ff a0 stwu r1,-96(r1) > > > 398: 7c 08 02 a6 mflr r0 > > > - 39c: be 61 00 1c stmw r19,28(r1) > > > - 3a0: 90 01 00 54 stw r0,84(r1) > > > + 39c: be 61 00 2c stmw r19,44(r1) > > > + 3a0: 90 01 00 64 stw r0,100(r1) > > > 3a4: 7c df 33 78 mr r31,r6 > > > 3a8: 7c be 2b 78 mr r30,r5 > > > 3ac: 83 63 00 00 lwz r27,0(r3) > > > @@ -489,12 +489,12 @@ Disassembly of section .text: > > > 784: 48 00 00 0c b 790 <grub_mod_init-0x748> > > > 788: 7f c3 f3 78 mr r3,r30 > > > 78c: 7f e4 fb 78 mr r4,r31 > > > - 790: 39 61 00 50 addi r11,r1,80 > > > + 790: 39 61 00 60 addi r11,r1,96 > > > 794: 48 00 00 00 b 794 <grub_mod_init-0x744> > > > - 798: 94 21 ff e0 stwu r1,-32(r1) > > > + 798: 94 21 ff d0 stwu r1,-48(r1) > > > 79c: 7c 08 02 a6 mflr r0 > > > - 7a0: bf a1 00 14 stmw r29,20(r1) > > > - 7a4: 90 01 00 24 stw r0,36(r1) > > > + 7a0: bf a1 00 24 stmw r29,36(r1) > > > + 7a4: 90 01 00 34 stw r0,52(r1) > > > 7a8: 3f a0 00 00 lis r29,0 > > > 7ac: 7c 9e 23 78 mr r30,r4 > > > 7b0: 83 e3 00 00 lwz r31,0(r3) > > > @@ -525,7 +525,7 @@ Disassembly of section .text: > > > 814: 7f e3 fb 78 mr r3,r31 > > > 818: 48 00 00 01 bl 818 <grub_mod_init-0x6c0> > > > 81c: 3d 20 00 00 lis r9,0 > > > - 820: 39 61 00 20 addi r11,r1,32 > > > + 820: 39 61 00 30 addi r11,r1,48 > > > 824: 80 69 00 00 lwz r3,0(r9) > > > 828: 48 00 00 00 b 828 <grub_mod_init-0x6b0> > > > 82c: 94 21 ff e0 stwu r1,-32(r1) > > > @@ -555,13 +555,13 @@ Disassembly of section .text: > > > 88c: 39 61 00 20 addi r11,r1,32 > > > 890: 80 69 00 00 lwz r3,0(r9) > > > 894: 48 00 00 00 b 894 <grub_mod_init-0x644> > > > - 898: 94 21 ff d0 stwu r1,-48(r1) > > > + 898: 94 21 ff c0 stwu r1,-64(r1) > > > 89c: 7c 6b 1b 78 mr r11,r3 > > > 8a0: 7c 08 02 a6 mflr r0 > > > 8a4: 7c a6 2b 78 mr r6,r5 > > > 8a8: 38 ab 00 08 addi r5,r11,8 > > > - 8ac: bf c1 00 28 stmw r30,40(r1) > > > - 8b0: 90 01 00 34 stw r0,52(r1) > > > + 8ac: bf c1 00 38 stmw r30,56(r1) > > > + 8b0: 90 01 00 44 stw r0,68(r1) > > > 8b4: 3b cb 00 70 addi r30,r11,112 > > > 8b8: 7c 80 23 78 mr r0,r4 > > > 8bc: 80 63 00 00 lwz r3,0(r3) > > > @@ -584,7 +584,7 @@ Disassembly of section .text: > > > 900: 7d 64 5b 78 mr r4,r11 > > > 904: 7c 05 03 78 mr r5,r0 > > > 908: 48 00 00 01 bl 908 <grub_mod_init-0x5d0> > > > - 90c: 39 61 00 30 addi r11,r1,48 > > > + 90c: 39 61 00 40 addi r11,r1,64 > > > 910: 48 00 00 00 b 910 <grub_mod_init-0x5c8> > > > 914: 7c 68 1b 78 mr r8,r3 > > > 918: 80 63 00 44 lwz r3,68(r3) > > > @@ -596,10 +596,10 @@ Disassembly of section .text: > > > 930: 81 08 00 14 lwz r8,20(r8) > > > 934: 38 63 01 5c addi r3,r3,348 > > > 938: 4b ff ff 60 b 898 <grub_mod_init-0x640> > > > - 93c: 94 21 fe c0 stwu r1,-320(r1) > > > + 93c: 94 21 fe b0 stwu r1,-336(r1) > > > 940: 7c 08 02 a6 mflr r0 > > > - 944: be c1 01 18 stmw r22,280(r1) > > > - 948: 90 01 01 44 stw r0,324(r1) > > > + 944: be c1 01 28 stmw r22,296(r1) > > > + 948: 90 01 01 54 stw r0,340(r1) > > > 94c: 7c 7f 1b 78 mr r31,r3 > > > 950: 7c 9a 23 78 mr r26,r4 > > > 954: 7c b9 2b 78 mr r25,r5 > > > @@ -715,7 +715,7 @@ Disassembly of section .text: > > > b0c: 2f 83 00 00 cmpwi cr7,r3,0 > > > b10: 41 9e fe b0 beq cr7,9c0 <grub_mod_init-0x518> > > > b14: 38 60 00 01 li r3,1 > > > - b18: 39 61 01 40 addi r11,r1,320 > > > + b18: 39 61 01 50 addi r11,r1,336 > > > b1c: 48 00 00 00 b b1c <grub_mod_init-0x3bc> > > > b20: 94 21 ff d0 stwu r1,-48(r1) > > > b24: 39 20 00 00 li r9,0 > > > @@ -769,10 +769,10 @@ Disassembly of section .text: > > > be4: 39 61 00 30 addi r11,r1,48 > > > be8: 80 7f 00 00 lwz r3,0(r31) > > > bec: 48 00 00 00 b bec <grub_mod_init-0x2ec> > > > - bf0: 94 21 ff f0 stwu r1,-16(r1) > > > + bf0: 94 21 ff e0 stwu r1,-32(r1) > > > bf4: 7c 08 02 a6 mflr r0 > > > - bf8: bf c1 00 08 stmw r30,8(r1) > > > - bfc: 90 01 00 14 stw r0,20(r1) > > > + bf8: bf c1 00 18 stmw r30,24(r1) > > > + bfc: 90 01 00 24 stw r0,36(r1) > > > c00: 7c 7f 1b 78 mr r31,r3 > > > c04: 81 23 00 88 lwz r9,136(r3) > > > c08: 2f 89 00 00 cmpwi cr7,r9,0 > > > @@ -821,7 +821,7 @@ Disassembly of section .text: > > > cb4: 7d 20 fc 2c lwbrx r9,0,r31 > > > cb8: 7f c3 f3 78 mr r3,r30 > > > cbc: 7d 5e 49 ae stbx r10,r30,r9 > > > - cc0: 39 61 00 10 addi r11,r1,16 > > > + cc0: 39 61 00 20 addi r11,r1,32 > > > cc4: 48 00 00 00 b cc4 <grub_mod_init-0x214> > > > cc8: 94 21 ff d0 stwu r1,-48(r1) > > > ccc: 7c 08 02 a6 mflr r0 > > > @@ -878,14 +878,14 @@ Disassembly of section .text: > > > d98: 4e 80 04 21 bctrl > > > d9c: 39 61 00 30 addi r11,r1,48 > > > da0: 48 00 00 00 b da0 <grub_mod_init-0x138> > > > - da4: 94 21 ff d0 stwu r1,-48(r1) > > > + da4: 94 21 ff c0 stwu r1,-64(r1) > > > da8: 39 20 00 00 li r9,0 > > > dac: 7c 08 02 a6 mflr r0 > > > - db0: bf 41 00 18 stmw r26,24(r1) > > > + db0: bf 41 00 28 stmw r26,40(r1) > > > db4: 3f a0 00 00 lis r29,0 > > > db8: 7c 7f 1b 78 mr r31,r3 > > > dbc: 80 7d 00 00 lwz r3,0(r29) > > > - dc0: 90 01 00 34 stw r0,52(r1) > > > + dc0: 90 01 00 44 stw r0,68(r1) > > > dc4: 7c 9a 23 78 mr r26,r4 > > > dc8: 91 21 00 08 stw r9,8(r1) > > > dcc: 48 00 00 01 bl dcc <grub_mod_init-0x10c> > > > @@ -953,23 +953,23 @@ Disassembly of section .text: > > > ec4: 80 7b 00 00 lwz r3,0(r27) > > > ec8: 48 00 00 01 bl ec8 <grub_mod_init-0x10> > > > ecc: 7f a3 eb 78 mr r3,r29 > > > - ed0: 39 61 00 30 addi r11,r1,48 > > > + ed0: 39 61 00 40 addi r11,r1,64 > > > ed4: 48 00 00 00 b ed4 <grub_mod_init-0x4> > > > > > > 00000ed8 <grub_mod_init>: > > > - ed8: 94 21 ff f0 stwu r1,-16(r1) > > > + ed8: 94 21 ff e0 stwu r1,-32(r1) > > > edc: 3c 80 00 00 lis r4,0 > > > ee0: 7c 08 02 a6 mflr r0 > > > ee4: 38 84 00 00 addi r4,r4,0 > > > - ee8: 93 e1 00 0c stw r31,12(r1) > > > + ee8: 93 e1 00 1c stw r31,28(r1) > > > eec: 7c 7f 1b 78 mr r31,r3 > > > ef0: 3c 60 00 00 lis r3,0 > > > - ef4: 90 01 00 14 stw r0,20(r1) > > > + ef4: 90 01 00 24 stw r0,36(r1) > > > ef8: 38 63 00 00 addi r3,r3,0 > > > efc: 48 00 00 01 bl efc <grub_mod_init+0x24> > > > f00: 3d 20 00 00 lis r9,0 > > > f04: 93 e9 00 00 stw r31,0(r9) > > > - f08: 39 61 00 10 addi r11,r1,16 > > > + f08: 39 61 00 20 addi r11,r1,32 > > > f0c: 48 00 00 00 b f0c <grub_mod_init+0x34> > > > > > > 00000f10 <grub_mod_fini>: > > > > > > > > > _______________________________________________ > > > Grub-devel mailing list > > > Grub-devel@gnu.org > > > https://lists.gnu.org/mailman/listinfo/grub-devel > > > > > > Hi Andrei, > > > > I find out that VSX was the culprit. Can you please take a look at this > > patch? > > http://lists.gnu.org/archive/html/grub-devel/2014-09/msg00077.html > > > > > > > > With this patch it works. I'm really surprised - the same sources built > on different platform (ppc BE) did work without problems. I do not > understand how this can be possible if the problem was in specific CPU > mode. It should have been the same in both cases ...
Check "gcc -v" for --with-cpu=power7. That flag enables VSX and Altivec. > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/grub-devel -- Paulo Flabiano Smorigo IBM Linux Technology Center _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
