On Wed, 2009-10-21 at 10:33 +0800, Wu Zhangjin wrote: > Hi, all > > Just made it(function graph tracer for MIPS) work :-) > > The problem is that: the stack offset should be from 0 to PT_SIZE(304), > but I mask it with 0xff(256), which is totally wrong. > > Here is an example, the stack address of ra(return address) should be > (s8 + ffbf0128 & 0xfff). > > ffffffff801dad10 <do_sync_read>: > ffffffff801dad10: 67bdfed0 daddiu sp,sp,-304 > ffffffff801dad14: ffbe0120 sd s8,288(sp) > ffffffff801dad18: 03a0f02d move s8,sp > ffffffff801dad1c: ffbf0128 sd ra,296(sp) > ffffffff801dad20: ffb30118 sd s3,280(sp) > ffffffff801dad24: ffb20110 sd s2,272(sp) > ffffffff801dad28: ffb10108 sd s1,264(sp) > ffffffff801dad2c: ffb00100 sd s0,256(sp) > ffffffff801dad30: 03e0082d move at,ra > ffffffff801dad34: 0c042ab0 jal ffffffff8010aac0 > <_mcount> > ffffffff801dad38: 00020021 nop > > Thanks! will send the patches out later. Great to hear that it works! When I get my cross compiling working I'll test out your patches. I'll also probably update them to use the asm() over the probe and tracing_disable(). That method is very inefficient. Good work! -- Steve
