Atsushi Nemoto wrote:
It looks very strange. "lui k1, %hi(kernelsp)" should be enough for
the -msym32 kernel. What is a version of binutils and gcc you are using?
And could you show me disassembled list of handle_int (or some other
rountines using get_saved_sp) of failed kernel?
If you were using gcc 3.x, does this fix work for you?
#if defined(CONFIG_32BIT) || (defined(KBUILD_64BIT_SYM32) && __GNUC__ >= 4)
lui k1, %hi(kernelsp)
#else
# mips64-unknown-linux-gnu-ld --version
GNU ld version 2.16.1
# mips64-unknown-linux-gnu-gcc --version
mips64-unknown-linux-gnu-gcc (GCC) 4.1.1 (Gentoo 4.1.1-r3)
And the disassembly of vmlinux.32 for the handle_int function is attached.
I haven't built a kernel w/ gcc-3.x for some time, probably last time being when
I was chasing down the strange funkiness in my Octane's userland in 2.6.19.
--Kumba
--
Gentoo/MIPS Team Lead
"Such is oft the course of deeds that move the wheels of the world: small hands
do them because they must, while the eyes of the great are elsewhere." --Elrond
80006ac0 <handle_int>:
80006ac0: 401a6000 mfc0 k0,$12
80006ac4: 001ad0c0 sll k0,k0,0x3
80006ac8: 07400007 bltz k0,80006ae8 <handle_int+0x28>
80006acc: 03a0d82d move k1,sp
80006ad0: 3c1b0000 lui k1,0x0
80006ad4: 677b0000 daddiu k1,k1,0
80006ad8: 001bdc38 dsll k1,k1,0x10
80006adc: 677b8047 daddiu k1,k1,-32697
80006ae0: 001bdc38 dsll k1,k1,0x10
80006ae4: df7b5008 ld k1,20488(k1)
80006ae8: 03a0d02d move k0,sp
80006aec: 677dfed0 daddiu sp,k1,-304
80006af0: ffba00e8 sd k0,232(sp)
80006af4: ffa30018 sd v1,24(sp)
80006af8: ffa00000 sd zero,0(sp)
80006afc: 40036000 mfc0 v1,$12
80006b00: ffa20010 sd v0,16(sp)
80006b04: ffa30100 sd v1,256(sp)
80006b08: ffa40020 sd a0,32(sp)
80006b0c: 40036800 mfc0 v1,$13
80006b10: ffa50028 sd a1,40(sp)
80006b14: ffa30120 sd v1,288(sp)
80006b18: ffa60030 sd a2,48(sp)
80006b1c: 40237000 dmfc0 v1,$14
80006b20: ffa70038 sd a3,56(sp)
80006b24: ffa80040 sd t0,64(sp)
80006b28: ffa90048 sd t1,72(sp)
80006b2c: ffa30128 sd v1,296(sp)
80006b30: ffb900c8 sd t9,200(sp)
80006b34: ffbc00e0 sd gp,224(sp)
80006b38: ffbf00f8 sd ra,248(sp)
80006b3c: 37bc3fff ori gp,sp,0x3fff
80006b40: 3b9c3fff xori gp,gp,0x3fff
80006b44: ffa10008 sd at,8(sp)
80006b48: 00001810 mfhi v1
80006b4c: ffa30108 sd v1,264(sp)
80006b50: 00001812 mflo v1
80006b54: ffaa0050 sd t2,80(sp)
80006b58: ffab0058 sd t3,88(sp)
80006b5c: ffa30110 sd v1,272(sp)
80006b60: ffac0060 sd t4,96(sp)
80006b64: ffad0068 sd t5,104(sp)
80006b68: ffae0070 sd t6,112(sp)
80006b6c: ffaf0078 sd t7,120(sp)
80006b70: ffb800c0 sd t8,192(sp)
80006b74: ffb00080 sd s0,128(sp)
80006b78: ffb10088 sd s1,136(sp)
80006b7c: ffb20090 sd s2,144(sp)
80006b80: ffb30098 sd s3,152(sp)
80006b84: ffb400a0 sd s4,160(sp)
80006b88: ffb500a8 sd s5,168(sp)
80006b8c: ffb600b0 sd s6,176(sp)
80006b90: ffb700b8 sd s7,184(sp)
80006b94: ffbe00f0 sd s8,240(sp)
80006b98: 400c6000 mfc0 t4,$12
80006b9c: 3c0d1000 lui t5,0x1000
80006ba0: 35ad001f ori t5,t5,0x1f
80006ba4: 018d6025 or t4,t4,t5
80006ba8: 398c001f xori t4,t4,0x1f
80006bac: 408c6000 mtc0 t4,$12
...
80006bbc: df900058 ld s0,88(gp)
80006bc0: ff9d0058 sd sp,88(gp)
80006bc4: 3c1f8000 lui ra,0x8000
80006bc8: 0800154e j 80005538 <plat_irq_dispatch>
80006bcc: 67ff68a0 daddiu ra,ra,26784
