proc calloc

kern/proc.h

@@ -0,0 +1,77 @@
+#include <stdint.h>
+
+typedef enum {
+    UNUSED,
+    USED,
+    SLEEPING,
+    RUNNABLE,
+    RUNNING,
+    ZOMBIE,
+} ProcessState;
+
+/** Saved registers for kernel context switches. */
+struct Context {
+    uint64_t ra;
+    uint64_t sp;
+
+    // callee-saved
+    uint64_t s0;
+    uint64_t s1;
+    uint64_t s2;
+    uint64_t s3;
+    uint64_t s4;
+    uint64_t s5;
+    uint64_t s6;
+    uint64_t s7;
+    uint64_t s8;
+    uint64_t s9;
+    uint64_t s10;
+    uint64_t s11;
+};
+
+/** Per-CPU state. */
+struct Cpu {
+    struct Process *proc;    // The process running on this cpu, or null.
+    struct Context  context; // swtch() here to enter scheduler().
+    int             noff;    // Depth of push_off() nesting.
+    int             intena;  // Were interrupts enabled before push_off()?
+};
+
+typedef struct {
+    /*   0 */ uint64_t kernel_satp;   // kernel page table
+    /*   8 */ uint64_t kernel_sp;     // top of process's kernel stack
+    /*  16 */ uint64_t kernel_trap;   // usertrap()
+    /*  24 */ uint64_t epc;           // saved user program counter
+    /*  32 */ uint64_t kernel_hartid; // saved kernel tp
+    /*  40 */ uint64_t ra;
+    /*  48 */ uint64_t sp;
+    /*  56 */ uint64_t gp;
+    /*  64 */ uint64_t tp;
+    /*  72 */ uint64_t t0;
+    /*  80 */ uint64_t t1;
+    /*  88 */ uint64_t t2;
+    /*  96 */ uint64_t s0;
+    /* 104 */ uint64_t s1;
+    /* 112 */ uint64_t a0;
+    /* 120 */ uint64_t a1;
+    /* 128 */ uint64_t a2;
+    /* 136 */ uint64_t a3;
+    /* 144 */ uint64_t a4;
+    /* 152 */ uint64_t a5;
+    /* 160 */ uint64_t a6;
+    /* 168 */ uint64_t a7;
+    /* 176 */ uint64_t s2;
+    /* 184 */ uint64_t s3;
+    /* 192 */ uint64_t s4;
+    /* 200 */ uint64_t s5;
+    /* 208 */ uint64_t s6;
+    /* 216 */ uint64_t s7;
+    /* 224 */ uint64_t s8;
+    /* 232 */ uint64_t s9;
+    /* 240 */ uint64_t s10;
+    /* 248 */ uint64_t s11;
+    /* 256 */ uint64_t t3;
+    /* 264 */ uint64_t t4;
+    /* 272 */ uint64_t t5;
+    /* 280 */ uint64_t t6;
+} TrapFrame_t;