X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=testing%2Fexamples%2Fcortex%2Fcm3-ftest.cfg;fp=testing%2Fexamples%2Fcortex%2Fcm3-ftest.cfg;h=2dae2493f83f54be8eb6fa26222531dd5bcb9e6a;hp=0000000000000000000000000000000000000000;hb=2a0c9b08d7ee0c1b0eb5b593d18f68d0c910927d;hpb=22d25e69213c49395ee0d40f6cc1eda935873ed2;ds=sidebyside diff --git a/testing/examples/cortex/cm3-ftest.cfg b/testing/examples/cortex/cm3-ftest.cfg new file mode 100644 index 0000000000..2dae2493f8 --- /dev/null +++ b/testing/examples/cortex/cm3-ftest.cfg @@ -0,0 +1,143 @@ +# +# For each named Cortex-M3 vector_catch flag VECTOR ... +# bus_err state_err +# chk_err nocp_err +# mm_err reset +# +# BUT NYET hard_err, int_err (their test cases don't yet work) ... +# +# Do the following: +# +# - Test #1: verify that OpenOCD ignores exceptions by default +# + l_VECTOR (loads testcase to RAM) +# + fault triggers loop-to-self exception "handler" +# + "halt" +# + observe fault "handling" -- loop-to-self from load_and_run (below) +# +# - Test #2: verify that "vector_catch" makes OpenOCD stops ignoring them +# + cortex_m3 vector_catch none +# + cortex_m3 vector_catch VECTOR +# + l_VECTOR (loads testcase to RAM) +# + fault triggers vector catch hardware +# + observe OpenOCD entering debug state with no assistance +# +# NOTE "reset" includes the NVIC, so that test case gets its reset vector +# from the flash, not from the vector table set up here. Which means that +# for that vector_catch option, the Test #1 (above) "observe" step won't +# use the SRAM address. +# + +# we can fully automate test #2 +proc vector_test {tag} { + halt + # REVISIT -- annoying, we'd like to scrap vector_catch output + cortex_m3 vector_catch none + cortex_m3 vector_catch $tag + eval "l_$tag" +} + +# +# Load and start one vector_catch test case. +# +# name -- tag for the vector_catch flag being tested +# halfwords -- array of instructions (some wide, some narrow) +# n_instr -- how many instructions are in $halfwords +# +proc load_and_run { name halfwords n_instr } { + reset halt + + # Load code at beginning of SRAM. + echo "# code to trigger $name vector" + set addr 0x20000000 + + # ocd_array2mem should be faster, though we'd need to + # compute the resulting $addr ourselves + foreach opcode $halfwords { + mwh $addr $opcode + incr addr 2 + } + + # create default loop-to-self at $addr ... it serves as + # (a) "main loop" on error + # (b) handler for all exceptions that get triggered + mwh $addr 0xe7fe + + # disassemble, as sanity check and what's-happening trace + cortex_m3 disassemble 0x20000000 [expr 1 + $n_instr ] + + # Assume that block of code is at most 16 halfwords long. + # Create a basic table of loop-to-self exception handlers. + mww 0x20000020 $addr 16 + # Store its address in VTOR + mww 0xe000ed08 0x20000020 + # Use SHCSR to ensure nothing escalates to a HardFault + mww 0xe000ed24 0x00070000 + + # now start, trigering the $name vector catch logic + resume 0x20000000 +} + +#proc l_hard_err {} { +# IMPLEMENT ME +# FORCED -- escalate something to HardFault +#} + +#proc l_int_err {} { +# IMPLEMENT ME +# STKERR -- exception stack BusFault +#} + +# BusFault, escalates to HardFault +proc l_bus_err {} { + # PRECISERR -- assume less than 512 MBytes of SRAM + load_and_run bus_err { + 0xf06f 0x4040 + 0x7800 + } 2 +} + +# UsageFault, escalates to HardFault +proc l_state_err {} { + # UNDEFINSTR -- issue architecturally undefined instruction + load_and_run state_err { + 0xde00 + } 1 +} + +# UsageFault, escalates to HardFault +proc l_chk_err {} { + # UNALIGNED -- LDM through unaligned pointer + load_and_run chk_err { + 0xf04f 0x0001 + 0xe890 0x0006 + } 2 +} + +# UsageFault, escalates to HardFault +proc l_nocp_err {} { + # NOCP -- issue cp14 DCC instruction + load_and_run nocp_err { + 0xee10 0x0e15 + } 1 +} + +# MemManage, escalates to HardFault +proc l_mm_err {} { + # IACCVIOL -- instruction fetch from an XN region + load_and_run mm_err { + 0xf04f 0x4060 + 0x4687 + } 2 +} + +proc l_reset {} { + # issue SYSRESETREQ via AIRCR + load_and_run reset { + 0xf04f 0x0104 + 0xf2c0 0x51fa + 0xf44f 0x406d + 0xf100 0x000c + 0xf2ce 0x0000 + 0x6001 + } 6 +}