![\"bsp_editor_reduced_device_drivers\"](\"http:\/\/blog.bachi.net\/wp-content\/uploads\/2013\/10\/bsp_editor_reduced_device_drivers.png\")
<\/a><\/p>\nNios II Exception Handling<\/a> ABachmann: Debug user space application with MMU<\/a><\/p>\n Embedded News and Events: Nios II Gen2 Processor Support<\/a> random number generator?<\/a> Place a .gdbinit in your app-directory<\/p>\n How to use GDB to find what function a memory address corresponds to<\/a> Dive into ELF files using readelf command<\/a> Understanding ELF using readelf and objdump<\/a><\/a><\/p>\n<\/td>\n<\/tr>\n<\/table>\nIncludes<\/h3>\n
\r\n\/opt\/altera12.1sp1\/nios2eds\/components\/altera_nios2\/HAL\/inc\r\n\/opt\/altera12.1sp1\/nios2eds\/bin\/gnu\/H-i686-pc-linux-gnu\/nios2-elf\/include\r\n\/opt\/altera12.1sp1\/nios2eds\/bin\/gnu\/H-i686-pc-linux-gnu\/lib\/gcc\/nios2-elf\/4.1.2\/include\r\n<\/pre>\n
Exception Handling<\/h3>\n
\nalteraforum.com: Nios II exception handler<\/a><\/p>\nStacktrace \/ Backtrace<\/h3>\n
libc<\/h3>\n
Is malloc() and free() not thread-safe?<\/h4>\n
\r\nIn addition, the MicroC\/OS-II implementation provides appropriate task\r\nlocking to ensure that heap accesses, i.e., calls to malloc() and free()\r\nare also thread safe.\r\n<\/pre>\n
GCC<\/h3>\n
\r\n$ nios2-elf-gcc -v\r\ngcc version 4.1.2 (Altera 12.1sp1 Build 243)\r\n\r\n$ nios2-elf-gcc -v\r\ngcc version 4.7.3 (Altera 13.1 Build 162)\r\n\r\n$ nios2-elf-gcc -v\r\ngcc version 4.8.3 20140320 (prerelease) (Altera 14.1 Build 186)\r\n<\/pre>\n
\nNios II GNU toolchain upgrade from GCC 4.1.2 to GCC 4.7.3<\/a>
\nCan the linker inline functions?<\/a><\/p>\nrand()<\/h4>\n
\r\nGenerate a random number between 'x' and 'y':\r\n\r\nreturn [ x + random % (y - x + 1) }\r\n\r\nex. x = 2, y = 7\r\nrandom % (7 - 2 + 1) = random % 6 = 0 ... 5\r\n2 + random % 6 = 2 ... 7\r\n<\/pre>\n
\nucore-nios2\/libs\/rand.c<\/a>
\nHow to choose numbers random with C?<\/a><\/p>\nGDB<\/h3>\n
\nGDB: Getting a symbol name from a memory address<\/a><\/p>\n\r\nbt\r\n#0 alt_irq_entry () at HAL\/src\/alt_exception_entry.S:117\r\n#1 0x00000024 in alt_irq_entry () at HAL\/src\/alt_exception_entry.S:107\r\nBacktrace stopped: previous frame identical to this frame (corrupt stack?)\r\n<\/pre>\n
\r\ninfo symbol 0x1201c\r\nsys_check_timeouts + 164 in section .text\r\n<\/pre>\n
\r\nlist *0x1201c\r\n0x1201c is in sys_check_timeouts (src\/lwip-1.4.1\/core\/timers.c:374).\r\n369\t \/* this cares for wraparounds *\/\r\n370\t diff = now - timeouts_last_time;\r\n371\t do\r\n372\t {\r\n373\t#if PBUF_POOL_FREE_OOSEQ\r\n374\t PBUF_CHECK_FREE_OOSEQ();\r\n375\t#endif \/* PBUF_POOL_FREE_OOSEQ *\/\r\n376\t had_one = 0;\r\n377\t tmptimeout = next_timeout;\r\n378\t if (tmptimeout && (tmptimeout->time <= diff)) {\r\n<\/pre>\nreadelf<\/h3>\n
\nwhat are the meanings of the columns displayed by readelf?<\/a><\/p>\nobjdump<\/h3>\n
\nHow to get gcc to interleave assembly output with original source code<\/a><\/p>\n\r\n$ nios2-elf-objdump -d -j <section> <filename> | grep -C <context> <address>\r\n$ nios2-elf-objdump -d -j .text hcpp.elf | grep -C 30 1201c\r\n<\/pre>\n
PRIxPTR and intptr_t<\/h3>\n
\r\nInfo: Compiling src\/test.c to obj\/default\/src\/test.o\r\nsrc\/test.c: In function 'task_test':\r\nsrc\/test.c:642:9: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 2 has type 'unsigned int' [-Wformat=]\r\nsrc\/test.c:642:9: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 3 has type 'unsigned int' [-Wformat=]\r\n LOG_PRINTLN(LOG_TEST, LOG_VERBOSE, ("lut_entry = 0x%08" PRIxPTR " idx_table = 0x%08" PRIxPTR, (uintptr_t) lut_table, (uintptr_t) idx_tabl));\r\n<\/pre>\n
![\"eclipse_include_path\"](\"http:\/\/blog.bachi.net\/wp-content\/uploads\/2013\/10\/eclipse_include_path.png\")
<\/a>\n<\/td>\n<\/tr>\n<\/table>\n![\"eclipse_keys\"](\"http:\/\/blog.bachi.net\/wp-content\/uploads\/2015\/03\/eclipse_keys.png\")
<\/a><\/td>\n![\"eclipse_folding\"](\"http:\/\/blog.bachi.net\/wp-content\/uploads\/2015\/03\/eclipse_folding.png\")
<\/a><\/td>\n<\/tr>\n<\/table>\n