lunaix-os/arch/x86/includes/sys/abi32.h

   1 #ifndef __LUNAIX_ARCH_ABI32_H
   2 #define __LUNAIX_ARCH_ABI32_H
   3
   4 #include "sys/x86_isa.h"
   5
   6 #define stack_alignment 0xfffffff0
   7
   8 #ifndef __ASM__
   9 #define store_retval(retval) current_thread->hstate->registers.eax = (retval)
  10
  11 #define store_retval_to(th, retval) (th)->hstate->registers.eax = (retval)
  12
  13 static inline void must_inline
  14 j_usr(ptr_t sp, ptr_t pc)
  15 {
  16     asm volatile("movw %0, %%ax\n"
  17                  "movw %%ax, %%es\n"
  18                  "movw %%ax, %%ds\n"
  19                  "movw %%ax, %%fs\n"
  20                  "movw %%ax, %%gs\n"
  21                  "pushl %0\n"
  22                  "pushl %1\n"
  23                  "pushl %2\n"
  24                  "pushl %3\n"
  25                  "retf" ::"i"(UDATA_SEG),
  26                  "r"(sp),
  27                  "i"(UCODE_SEG),
  28                  "r"(pc)
  29                  : "eax", "memory");
  30 }
  31
  32 static inline ptr_t must_inline
  33 abi_get_callframe()
  34 {
  35     ptr_t val;
  36     asm("movl %%ebp, %0" : "=r"(val)::);
  37     return val;
  38 }
  39
  40 #endif
  41 #endif /* __LUNAIX_ARCH_ABI32_H */