Hi, sent this to John-Mark Bell, who advised me to send it to the list... i'm not subscribed though, so maybe i'll need to. In any case, i'm willing to test diffs/svn trunk of libcss/netsurf to ensure netsurf works on OpenBSD/sparc64. In the meantime i've already imported netsurf's port to our portstree, see http://marc.info/?l=openbsd-ports-cvs&m=127784283903476&w=2. Local patches are very minimal, i can explain them if needed. Thanks, Landry ----- Forwarded message from Landry Breuil <landry(a)rhaalovely.net&gt; ----- Date: Tue, 29 Jun 2010 21:21:09 +0200 From: Landry Breuil <landry(a)rhaalovely.net&gt; To: jmb(a)netsurf-browser.org Subject: netsurf on OpenBSD/sparc64 User-Agent: Mutt/1.5.20 (2009-06-14) Message-ID: <20100629192109.GA6153(a)dawn.rhaalovely.net&gt; Hi, i'm an openbsd developer, and made a port of netsurf (and its depending libs) for OpenBSD. Everything works fine, it's pretty cool and well done.. tested on amd64/i386/powerpc, ok. But on sparc64, it really badly crashes in libcss (SIGBUS). Basically, the 'bytecode' handling in libcss only does unaligned memory accesses, ie accessing memory at the middle of a word - on sparc64 a pointer should end up in 0/8, here it accesses memory at pointers finishing by 4/C too. i'd say the guilty function is advance_bytecode which does weird pointer arithmetics, but there are lots of occurences of weird cast usages. And using uint32_t to walk arrays of bytes when a pointer is 64 bits will only lead to issues. I'm not a C expert, but i've fixed quite some programs doing SIGBUS'es on sparc64, and that kind of construct seems highly non-valid to me - they only arise on sparc64 because it's a strict alignment architecture. lwc_string **p = (void *) ((uint8_t *) s->style->bytecode + i); Would you consider helping me in trying to run netsurf there ? Should i write to the dev mailing list instead ? TIA, Landry Ps:i attach gdb traces/crashes of netsurf and libcss regress test.. (gdb) r http://google.fr Starting program: /usr/local/bin/netsurf http://google.fr Program received signal SIGBUS, Bus error. cascade_font_family (opv=33816612, style=0xffffffffffff03d0, state=0xffffffffffff0550) at src/select/properties.c:2582 2582 font = *((lwc_string **) (gdb) p style->bytecode $2 = (void *) 0x4d2b5dd4 (gdb) bt #0 cascade_font_family (opv=33816612, style=0xffffffffffff03d0, state=0xffffffffffff0550) at src/select/properties.c:2582 #1 0x000000004dad9d58 in cascade_style (style=Variable "style" is not available. ) at src/select/select.c:1184 #2 0x000000004dadb030 in css_select_style (ctx=0x49c11320, node=Variable "node" is not available. ) at src/select/select.c:933 #3 0x0000000000139564 in nscss_get_style (html=0x465af050, n=0x40725800, pseudo_element=0, media=64, inline_style=0x0, alloc=0x187320 <myrealloc>, pw=0x465af050) at css/select.c:188 #4 0x0000000000188238 in box_construct_element (n=0x40725800, content=0x465af050, parent_style=0x4d27e650, parent=0x4d27e050, inline_container=0xffffffffffff0cf8, href=0x0, target=0x0, title=0x0) at render/box_construct.c:855 #5 0x0000000000188910 in convert_xml_to_box (n=0x40725800, content=0x465af050, parent_style=0x4d27e650, parent=0x4d27e050, inline_container=0xffffffffffff0cf8, href=0x0, target=0x0, title=0x0) at render/box_construct.c:246 #6 0x00000000001881ac in box_construct_element (n=0x44ee5000, content=0x465af050, parent_style=0x0, parent=0xffffffffffff0eb8, inline_container=0xffffffffffff1048, href=0x0, target=0x0, title=0x0) at render/box_construct.c:552 #7 0x0000000000188910 in convert_xml_to_box (n=0x44ee5000, content=0x465af050, parent_style=0x0, parent=0xffffffffffff0eb8, inline_container=0xffffffffffff1048, href=0x0, target=0x0, title=0x0) at render/box_construct.c:246 #8 0x0000000000188e68 in xml_to_box (n=0x44ee5000, c=0x465af050) at render/box_construct.c:187 #9 0x000000000018fab0 in html_finish_conversion (c=0x465af050) at render/html.c:535 #10 0x000000000018fe7c in html_convert_css_callback (css=Variable "css" is not available. ) at render/html.c:1233 #11 0x0000000000126bb0 in hlcache_content_callback (c=0x465ae050, msg=CONTENT_MSG_DONE, data= {error = 0x11d4d8 "", redraw = {x = 0, y = 1.63755739e-39, width = 0, height = 0, full_redraw = false, object = 0x43b80a00, object_x = -nan(0x7fffff), object_y = -nan(0x7f0f00), object_width = 0, object_height = 4.58504858e-42}, delay = 0, download = 0x11d4d8}, pw=0x41c47b60) at content/hlcache.c:617 #12 0x000000000011fe6c in content_broadcast (c=0x465ae050, msg=CONTENT_MSG_DONE, data= {error = 0x11d4d8 "", redraw = {x = 0, y = 1.63755739e-39, width = 0, height = 0, full_redraw = false, object = 0x43b80a00, object_x = -nan(0x7fffff), object_y = -nan(0x7f0f00), object_width = 0, object_height = 4.58504858e-42}, delay = 0, download = 0x11d4d8}) at content/content.c:1020 #13 0x0000000000121464 in content_set_done (c=0x465ae050) at content/content.c:701 #14 0x0000000000130ec4 in nscss_content_done (css=0x465ae088, pw=0x465ae050) at css/css.c:235 #15 0x0000000000130bcc in nscss_import (handle=0x49c104a0, event=Variable "event" is not available. ) at css/css.c:517 #16 0x0000000000126bb0 in hlcache_content_callback (c=0x43b80850, msg=CONTENT_MSG_DONE, data= {error = 0x0, redraw = {x = 0, y = 0, width = 0, height = 0, full_redraw = false, object = 0x0, object_x = 0, object_y = 0, object_width = 0, object_height = 0}, delay = 0, download = 0x0}, pw=0x49c104a0) at content/hlcache.c:617 #17 0x000000000011fe6c in content_broadcast (c=0x43b80850, msg=CONTENT_MSG_DONE, data= {error = 0x0, redraw = {x = 0, y = 0, width = 0, height = 0, full_redraw = false, object = 0x0, object_x = 0, object_y = 0, object_width = 0, object_height = 0}, delay = 0, download = 0x0}) at content/content.c:1020 #18 0x0000000000121464 in content_set_done (c=0x43b80850) at content/content.c:701 #19 0x00000000001217a8 in content_llcache_callback (llcache=Variable "llcache" is not available. ) at content/content.c:673 #20 0x00000000001280ac in llcache_object_notify_users (object=0x465ac000) at content/llcache.c:1305 #21 0x0000000000129608 in llcache_poll () at content/llcache.c:238 #22 0x00000000001273ac in hlcache_poll () at content/hlcache.c:93 #23 0x000000000014315c in netsurf_main_loop () at desktop/netsurf.c:170 #24 0x0000000000160c1c in main (argc=2, argv=0xffffffffffff34f8) at gtk/gtk_gui.c:412 (gdb) r ../test/data/Aliases ../test/data/parse/tests1.dat Starting program: /usr/ports/pobj/libcss-0.0.1/libcss-0.0.1/build-OpenBSD-OpenBSD-release-lib-shared/test_parse-auto ../test/data/Aliases ../test/data/parse/tests1.dat Test 1: PASS Test 2: PASS Test 3: PASS Test 4: PASS Test 5: PASS Program received signal SIGBUS, Bus error. 0x0000000000102684 in run_test (data=Variable "data" is not available. ) at test/parse-auto.c:489 489 if (lwc_string_length(*p) != ----- End forwarded message -----