[Mesa-dev] Debugging crashes in llvm

Andreas Pokorny andreas.pokorny at gmail.com
Tue May 10 06:49:01 PDT 2011


I recently stumbled over regular crashes with llvmpipe on llvm-2.9 in windows:

0261908D  mov         ebx,dword ptr [esp+33Ch]
02619094  lea         ebx,[ebx+3]
02619097  imul        ebx,edx
0261909A  add         ebx,ecx
0261909C  insertps    xmm0,dword ptr [esi+ebx],30h  <--
026190A3  mov         ecx,dword ptr [ebp+8]
026190A6  mov         edx,dword ptr [ecx]
026190A8  movss       xmm2,dword ptr [edx+100h]

>	libEGL.dll!llvm_pipeline_generic(draw_pt_middle_end * middle=0x00000000, const draw_fetch_info * fetch_info=0x0006e828, const draw_prim_info * prim_info=0x0006e838)  Line 262 + 0x12 bytes	C
 	libEGL.dll!llvm_middle_end_linear_run(draw_pt_middle_end * middle=,
unsigned int start=, unsigned int count=, unsigned int prim_flags=)
Line 364 + 0x13 bytes	C
 	libEGL.dll!vsplit_run_linear(draw_pt_front_end *
frontend=0x000003ff, unsigned int start=0, unsigned int count=150)
Line 61 + 0x11 bytes	C
 	libEGL.dll!draw_pt_arrays(draw_context * draw=0x00000000, unsigned
int prim=4, unsigned int start=0, unsigned int count=3)  Line 115	C
 	libEGL.dll!draw_vbo(draw_context * draw=0x00000000, const
pipe_draw_info * info=0x00000000)  Line 491 + 0x13 bytes	C
 	libEGL.dll!llvmpipe_draw_vbo(pipe_context * pipe=0x021dc790, const
pipe_draw_info * info=0x0006e918)  Line 86	C
 	libEGL.dll!st_draw_vbo(gl_context * ctx=0x025a14b0, const
gl_client_array * * arrays=0x02661810, const _mesa_prim *
prims=0x0006e97c, unsigned int nr_prims=1, const _mesa_index_buffer *
ib=0x00000000, unsigned char index_bounds_valid='', unsigned int
min_index=0, unsigned int max_index=149)  Line 750 + 0xf bytes	C
 	libEGL.dll!vbo_draw_arrays(gl_context * ctx=0x00000000, unsigned int
mode=4, int start=0, int count=150, unsigned int numInstances=1)  Line
645 + 0x28 bytes	C
 	libEGL.dll!vbo_exec_DrawArrays(unsigned int mode=4, int start=0, int
count=150)  Line 675 + 0x11 bytes	C

What Information can I gather to find the cause for the crash?

Andreas Pokorny

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