lunaix-os/arch/i386/includes/sys/abi.h

   1 #ifndef __LUNAIX_I386ABI_H
   2 #define __LUNAIX_I386ABI_H
   3
   4 #include <sys/x86_isa.h>
   5
   6 #define stack_alignment 0xfffffff0
   7
   8 #ifndef __ASM__
   9 #define store_retval(retval) __current->intr_ctx->registers.eax = (retval)
  10
  11 #define store_retval_to(proc, retval) (proc)->intr_ctx->registers.eax = (retval)
  12
  13 #define eret_target(proc) (proc)->intr_ctx->execp->eip
  14 #define eret_stack(proc) (proc)->intr_ctx->execp->esp
  15 #define intr_ivec(proc) (proc)->intr_ctx->execp->vector
  16 #define intr_ierr(proc) (proc)->intr_ctx->execp->err_code
  17
  18 #define j_usr(sp, pc)                                                          \
  19     asm volatile("movw %0, %%ax\n"                                             \
  20                  "movw %%ax, %%es\n"                                           \
  21                  "movw %%ax, %%ds\n"                                           \
  22                  "movw %%ax, %%fs\n"                                           \
  23                  "movw %%ax, %%gs\n"                                           \
  24                  "pushl %0\n"                                                  \
  25                  "pushl %1\n"                                                  \
  26                  "pushl %2\n"                                                  \
  27                  "pushl %3\n"                                                  \
  28                  "retf" ::"i"(UDATA_SEG),                                      \
  29                  "r"(sp),                                                      \
  30                  "i"(UCODE_SEG),                                               \
  31                  "r"(pc)                                                       \
  32                  : "eax", "memory");
  33
  34 #define switch_context(process) asm volatile("jmp switch_to\n" ::"a"(process));
  35
  36 #define push_arg1(stack_ptr, arg) *((typeof((arg))*)(stack_ptr)--) = arg
  37 #define push_arg2(stack_ptr, arg1, arg2)                                       \
  38     {                                                                          \
  39         *((typeof((arg1))*)(stack_ptr)--) = arg1;                              \
  40         *((typeof((arg2))*)(stack_ptr)--) = arg2;                              \
  41     }
  42 #define push_arg3(stack_ptr, arg1, arg2, arg3)                                 \
  43     {                                                                          \
  44         *((typeof((arg1))*)(stack_ptr)--) = arg1;                              \
  45         *((typeof((arg2))*)(stack_ptr)--) = arg2;                              \
  46         *((typeof((arg3))*)(stack_ptr)--) = arg3;                              \
  47     }
  48 #define push_arg4(stack_ptr, arg1, arg2, arg3, arg4)                           \
  49     {                                                                          \
  50         *((typeof((arg1))*)(stack_ptr)--) = arg1;                              \
  51         *((typeof((arg2))*)(stack_ptr)--) = arg2;                              \
  52         *((typeof((arg3))*)(stack_ptr)--) = arg3;                              \
  53         *((typeof((arg4))*)(stack_ptr)--) = arg4;                              \
  54     }
  55 #endif
  56 #endif /* __LUNAIX_ABI_H */