| /kernel/trunk/contrib/conf/gxemul.sh |
|---|
| 1,4 → 1,4 |
| #!/bin/sh |
| # Uspace addresses outside of normal memory (kernel has std. 8 or 16MB) |
| # we place the pages at 24M |
| gxemul $@ -E testmips -X 0x81800000:../uspace/ns/ns 0x81900000:../uspace/kbd/kbd 0x81a00000:../uspace/init/init kernel.bin |
| gxemul $@ -E testmips -X 0x81800000:../uspace/ns/ns 0x81900000:../uspace/kbd/kbd 0x81a00000:../uspace/fb/fb 0x81b00000:../uspace/init/init kernel.bin |
| /kernel/trunk/generic/src/syscall/syscall.c |
|---|
| 47,17 → 47,17 |
| #include <syscall/copy.h> |
| #include <sysinfo/sysinfo.h> |
| static __native sys_io(int fd, const void * buf, size_t count) { |
| return count; /*Syscall deprecated*/ |
| static __native sys_io(int fd, const void * buf, size_t count) |
| { |
| // return count; /*Syscall deprecated*/ |
| // TODO: buf sanity checks and a lot of other stuff ... |
| /* |
| size_t i; |
| for (i = 0; i < count; i++) |
| putchar(((char *) buf)[i]); |
| return count;*/ |
| return count; |
| } |
| /** Dispatch system call */ |
| /kernel/trunk/arch/mips32/src/start.S |
|---|
| 222,7 → 222,7 |
| sub $k0, 8 # 8=SYSCALL |
| beqz $k0, syscall_shortcut |
| add $k0, 8 # Revert $k1 back to correct exc number |
| add $k0, 8 # Revert $k0 back to correct exc number |
| REGISTERS_STORE_AND_EXC_RESET $sp |
| 239,11 → 239,13 |
| #define SS_SP EOFFSET_SP |
| #define SS_STATUS EOFFSET_STATUS |
| #define SS_EPC EOFFSET_EPC |
| #define SS_K1 EOFFSET_K1 |
| syscall_shortcut: |
| # We have a lot of space on the stack, with free use |
| mfc0 $t1, $epc |
| mfc0 $t0, $status |
| sw $t1,SS_EPC($sp) # Save EPC |
| sw $k1,SS_K1($sp) # Save k1, which is not saved during context switch |
| and $t2, $t0, REG_SAVE_MASK # Save only KSU,EXL,ERL,IE |
| li $t3, ~(0x1f) |
| 270,6 → 272,7 |
| # restore epc+4 |
| lw $t0,SS_EPC($sp) |
| lw $k1,SS_K1($sp) |
| addi $t0, $t0, 4 |
| mtc0 $t0, $epc |