separate source into kernel/ user/ mkfs/

1 files changed, 0 insertions, 56 deletions

diff --git a/start.c b/start.c
deleted file mode 100644
index c4689dc..0000000
--- a/start.c
+++ /dev/null
@@ -1,56 +0,0 @@
-#include "types.h"
-#include "param.h"
-#include "memlayout.h"
-#include "riscv.h"
-#include "defs.h"
-
-void main();
-
-// entry.S needs one stack per CPU.
-__attribute__ ((aligned (16))) char stack0[4096 * NCPU];
-
-// scratch area for timer interrupt, one per CPU.
-uint64 mscratch0[NCPU * 32];
-
-// assembly code in kernelvec for machine-mode timer interrupt.
-extern void machinevec();
-
-// entry.S jumps here in machine mode on stack0.
-void
-mstart()
-{
-  // set M Previous Privilege mode to Supervisor, for mret.
-  unsigned long x = r_mstatus();
-  x &= ~MSTATUS_MPP_MASK;
-  x |= MSTATUS_MPP_S;
-  w_mstatus(x);
-
-  // set M Exception Program Counter to main, for mret.
-  // requires gcc -mcmodel=medany
-  w_mepc((uint64)main);
-
-  // disable paging for now.
-  w_satp(0);
-
-  // delegate all interrupts and exceptions to supervisor mode.
-  w_medeleg(0xffff);
-  w_mideleg(0xffff);
-
-  // set up to receive timer interrupts in machine mode,
-  // for pre-emptive switching and (on hart 0) to drive time.
-  int id = r_mhartid();
-  uint64 *scratch = &mscratch0[32 * id];
-  *(uint64*)CLINT_MTIMECMP(id) = *(uint64*)CLINT_MTIME + 10000;
-  scratch[4] = CLINT_MTIMECMP(id);
-  scratch[5] = 10000000;
-  w_mscratch((uint64)scratch);
-  w_mtvec((uint64)machinevec);
-  w_mstatus(r_mstatus() | MSTATUS_MIE);
-  w_mie(r_mie() |  MIE_MTIE);
-
-  // keep each CPU's hartid in its tp register, for cpuid().
-  w_tp(id);
-
-  // call main() in supervisor mode.
-  asm volatile("mret");
-}