1 //Original:/proj/frio/dv/testcases/seq/se_usermode_protviol/se_usermode_protviol.dsp
2 // Description: User mode "Illegal Use Supervsor Resource" Exceptions
4 # sim: --environment operating
7 .include "testutils.inc"
11 // Constants and Defines
15 include(selfcheck.inc)
21 #define STACKSIZE 0x100 // change for how much stack you need
24 #define ITABLE 0xF0000000
27 GEN_INT_INIT(ITABLE) // set location for interrupt table
30 // Reset/Bootstrap Code
31 // (Here we should set the processor operating modes, initialize registers,
36 INIT_R_REGS(0); // initialize general purpose regs
38 INIT_P_REGS(0); // initialize the pointers
40 INIT_I_REGS(0); // initialize the dsp address regs
45 CLI R1; // inhibit events during MMR writes
47 LD32_LABEL(sp, USTACK); // setup the user stack pointer
50 LD32_LABEL(sp, KSTACK); // setup the kernel stack pointer
51 FP = SP; // and frame pointer
53 LD32(p0, EVT0); // Setup Event Vectors and Handlers
55 P0 += 4; // EVT0 not used (Emulation)
57 P0 += 4; // EVT1 not used (Reset)
59 LD32_LABEL(r0, NHANDLE); // NMI Handler (Int2)
62 LD32_LABEL(r0, XHANDLE); // Exception Handler (Int3)
65 P0 += 4; // EVT4 not used (Global Interrupt Enable)
67 LD32_LABEL(r0, HWHANDLE); // HW Error Handler (Int5)
70 LD32_LABEL(r0, THANDLE); // Timer Handler (Int6)
73 LD32_LABEL(r0, I7HANDLE); // IVG7 Handler
76 LD32_LABEL(r0, I8HANDLE); // IVG8 Handler
79 LD32_LABEL(r0, I9HANDLE); // IVG9 Handler
82 LD32_LABEL(r0, I10HANDLE);// IVG10 Handler
85 LD32_LABEL(r0, I11HANDLE);// IVG11 Handler
88 LD32_LABEL(r0, I12HANDLE);// IVG12 Handler
91 LD32_LABEL(r0, I13HANDLE);// IVG13 Handler
94 LD32_LABEL(r0, I14HANDLE);// IVG14 Handler
97 LD32_LABEL(r0, I15HANDLE);// IVG15 Handler
100 LD32(p0, EVT_OVERRIDE);
104 R1 = -1; // Change this to mask interrupts (*)
105 CSYNC; // wait for MMR writes to finish
106 STI R1; // sync and reenable events (implicit write to IMASK)
112 LT0 = r0; // set loop counters to something deterministic
119 ASTAT = r0; // reset other internal regs
121 RETS = r0; // prevent X's breaking LINK instruction
123 RETI = r0; // prevent Xs later on
129 // The following code sets up the test for running in USER mode
131 LD32_LABEL(r0, STARTUSER);// One gets to user mode by doing a
132 // ReturnFromInterrupt (RTI)
133 RETI = r0; // We need to load the return address
135 // Comment the following line for a USER Mode test
137 // JUMP STARTSUP; // jump to code start for SUPERVISOR mode
142 LD32_LABEL(p1, BEGIN);
146 CLI R1; // inhibit events during write to MMR
147 [ P0 ] = P1; // IVG15 (General) handler (Int 15) load with start
148 CSYNC; // wait for it
149 STI R1; // reenable events with proper imask
151 RAISE 15; // after we RTI, INT 15 should be taken
161 LD32_LABEL(sp, USTACK); // setup the user stack pointer
163 LINK 0; // change for how much stack frame space you need.
167 //*********************************************************************
171 // COMMENT the following line for USER MODE tests
172 // [--sp] = RETI; // enable interrupts in supervisor mode
177 // the following instructions should EXCEPT
178 R6 = 0x2E; // EXCAUSE 0x2E means Illegal Use Supervidor Resource
183 // TESTSET (p0); // now allowed in user mode
185 // IDLE; // works in user mode
223 R6 = 0x22; // EXCAUSE 0x22 means Illegal Insn Combination
226 CHECK_INIT_DEF(p0); //CHECK_INIT(p0, 0xFF7FFFFC);
227 // Xhandler counts all EXCAUSE = 0x2B;
228 CHECKREG(r5, 36); // count of all IF protection violations.
231 dbg_pass; // End the test
233 //*********************************************************************
236 // Handlers for Events
239 NHANDLE: // NMI Handler 2
242 XHANDLE: // Exception Handler 3
243 [ -- SP ] = ASTAT; // save what we damage
244 [ -- SP ] = ( R7:6 );
247 R7 >>= 26; // only want EXCAUSE
249 IF CC JUMP IFETCHPROTVIOL; // If EXCAUSE != 0x2E then leave
251 dbg_fail; // if the EXCAUSE is wrong the test will infinite loop
254 R7 = RETX; // Fix up return address
255 R7 += 2; // skip instruction
256 RETX = r7; // and put back in RETX
261 ( R7:6 ) = [ SP ++ ];
265 HWHANDLE: // HW Error Handler 5
268 THANDLE: // Timer Handler 6
271 I7HANDLE: // IVG 7 Handler
274 I8HANDLE: // IVG 8 Handler
277 I9HANDLE: // IVG 9 Handler
280 I10HANDLE: // IVG 10 Handler
283 I11HANDLE: // IVG 11 Handler
286 I12HANDLE: // IVG 12 Handler
289 I13HANDLE: // IVG 13 Handler
292 I14HANDLE: // IVG 14 Handler
295 I15HANDLE: // IVG 15 Handler
299 // padding for the icache
301 EXCPT 0; EXCPT 0; EXCPT 0; EXCPT 0; EXCPT 0; EXCPT 0; EXCPT 0;
311 // Stack Segments (Both Kernel and User)