| /kernel/trunk/arch/mips32/include/asm/regname.h |
|---|
| 62,8 → 62,8 |
| #define s8 30 |
| #define ra 31 |
| #define index 0 |
| #define random 1 |
| #define rindex 0 |
| #define rrandom 1 |
| #define entrylo0 2 |
| #define entrylo1 3 |
| #define context 4 |
| 76,12 → 76,12 |
| #define status 12 |
| #define cause 13 |
| #define epc 14 |
| #define config 16 |
| #define rconfig 16 |
| #define lladdr 17 |
| #define watchlo 18 |
| #define watchhi 19 |
| #define xcontext 20 |
| #define debug 23 |
| #define rdebug 23 |
| #define depc 24 |
| #define eepc 30 |
| /kernel/trunk/arch/mips32/src/exception.c |
|---|
| 40,6 → 40,7 |
| #include <func.h> |
| #include <console/kconsole.h> |
| #include <arch/debugger.h> |
| #include <syscall/syscall.h> |
| static char * exctable[] = { |
| "Interrupt","TLB Modified","TLB Invalid","TLB Invalid Store", |
| 134,7 → 135,22 |
| exc_dispatch(i+INT_OFFSET, pstate); |
| } |
| #include <debug.h> |
| /** Handle syscall userspace call */ |
| static void syscall_exception(int n, void *data) |
| { |
| struct exception_regdump *pstate = (struct exception_regdump *)data; |
| if (pstate->a3 < SYSCALL_END) |
| pstate->v0 = syscall_table[pstate->a3](pstate->a0, |
| pstate->a1, |
| pstate->a2); |
| else |
| panic("Undefined syscall %d", pstate->a3); |
| pstate->epc += 4; |
| } |
| void exception(struct exception_regdump *pstate) |
| { |
| int cause; |
| 190,4 → 206,5 |
| #ifdef CONFIG_FPU_LAZY |
| exc_register(EXC_CpU, "cpunus", cpuns_exception); |
| #endif |
| exc_register(EXC_Sys, "syscall", syscall_exception); |
| } |
| /kernel/trunk/arch/mips32/src/mips32.c |
|---|
| 95,6 → 95,10 |
| debugger_init(); |
| arc_print_memory_map(); |
| arc_print_devices(); |
| /* Setup usermode...*/ |
| config.init_addr = 0x20000000; |
| config.init_size = FRAME_SIZE; |
| } |
| void arch_post_mm_init(void) |
| 109,6 → 113,14 |
| { |
| } |
| /* Stack pointer saved when entering user mode */ |
| /* TODO: How do we do it on SMP system???? */ |
| /* Why the hell moves the linker the variable 64K away in assembler |
| * when not in .text section ???????? |
| */ |
| __address supervisor_sp __attribute__ ((section (".text"))); |
| void userspace(void) |
| { |
| /* EXL=1, UM=1, IE=1 */ |
| 122,10 → 134,6 |
| ; |
| } |
| /* Stack pointer saved when entering user mode */ |
| /* TODO: How do we do it on SMP system???? */ |
| __address supervisor_sp; |
| void before_thread_runs_arch(void) |
| { |
| supervisor_sp = (__address) &THREAD->kstack[THREAD_STACK_SIZE-SP_DELTA]; |