refactor: striped more arch-related code from the kernel code base

[lunaix-os.git] / lunaix-os / arch / i386 / includes / sys / abi.h

diff --git a/lunaix-os/arch/i386/includes/sys/abi.h b/lunaix-os/arch/i386/includes/sys/abi.h
new file mode 100644 (file)
index 0000000..f610b93
--- /dev/null
+++ b/lunaix-os/arch/i386/includes/sys/abi.h
@@ -0,0 +1,54 @@
+#ifndef __LUNAIX_I386ABI_H
+#define __LUNAIX_I386ABI_H
+
+#include <sys/x86_isa.h>
+
+#define stack_alignment 0xfffffff0
+
+#ifndef __ASM__
+#define store_retval(retval) __current->intr_ctx->registers.eax = (retval)
+
+#define store_retval_to(proc, retval) (proc)->intr_ctx->registers.eax = (retval)
+
+#define eret_target(proc) (proc)->intr_ctx->execp->eip
+#define eret_stack(proc) (proc)->intr_ctx->execp->esp
+#define intr_ivec(proc) (proc)->intr_ctx->execp->vector
+#define intr_ierr(proc) (proc)->intr_ctx->execp->err_code
+
+#define j_usr(sp, pc)                                                          \
+    asm volatile("movw %0, %%ax\n"                                             \
+                 "movw %%ax, %%es\n"                                           \
+                 "movw %%ax, %%ds\n"                                           \
+                 "movw %%ax, %%fs\n"                                           \
+                 "movw %%ax, %%gs\n"                                           \
+                 "pushl %0\n"                                                  \
+                 "pushl %1\n"                                                  \
+                 "pushl %2\n"                                                  \
+                 "pushl %3\n"                                                  \
+                 "retf" ::"i"(UDATA_SEG),                                      \
+                 "r"(sp),                                                      \
+                 "i"(UCODE_SEG),                                               \
+                 "r"(pc)                                                       \
+                 : "eax", "memory");
+
+#define push_arg1(stack_ptr, arg) *((typeof((arg))*)(stack_ptr)--) = arg
+#define push_arg2(stack_ptr, arg1, arg2)                                       \
+    {                                                                          \
+        *((typeof((arg1))*)(stack_ptr)--) = arg1;                              \
+        *((typeof((arg2))*)(stack_ptr)--) = arg2;                              \
+    }
+#define push_arg3(stack_ptr, arg1, arg2, arg3)                                 \
+    {                                                                          \
+        *((typeof((arg1))*)(stack_ptr)--) = arg1;                              \
+        *((typeof((arg2))*)(stack_ptr)--) = arg2;                              \
+        *((typeof((arg3))*)(stack_ptr)--) = arg3;                              \
+    }
+#define push_arg4(stack_ptr, arg1, arg2, arg3, arg4)                           \
+    {                                                                          \
+        *((typeof((arg1))*)(stack_ptr)--) = arg1;                              \
+        *((typeof((arg2))*)(stack_ptr)--) = arg2;                              \
+        *((typeof((arg3))*)(stack_ptr)--) = arg3;                              \
+        *((typeof((arg4))*)(stack_ptr)--) = arg4;                              \
+    }
+#endif
+#endif /* __LUNAIX_ABI_H */