Decoupling Architectural-specific Code (#35)

[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
index f610b93465b80a0131cbadc032570c846e9a53b6..d847251a0a3a0477db6594b034e0565b05d9cfdf 100644 (file)
--- a/lunaix-os/arch/i386/includes/sys/abi.h
+++ b/lunaix-os/arch/i386/includes/sys/abi.h
@@ -1,35 +1,41 @@
 #ifndef __LUNAIX_I386ABI_H
 #define __LUNAIX_I386ABI_H
 
-#include <sys/x86_isa.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)                                                       \
+#define align_stack(ptr) ((ptr) & stack_alignment)
+#define store_retval(retval) current_thread->hstate->registers.eax = (retval)
+
+#define store_retval_to(th, retval) (th)->hstate->registers.eax = (retval)
+
+static inline void must_inline 
+j_usr(ptr_t sp, ptr_t 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");
+}
+
+
+static inline void must_inline noret
+switch_context() {
+    asm volatile("jmp do_switch\n");
+    unreachable;
+}
 
 #define push_arg1(stack_ptr, arg) *((typeof((arg))*)(stack_ptr)--) = arg
 #define push_arg2(stack_ptr, arg1, arg2)                                       \
@@ -50,5 +56,26 @@
         *((typeof((arg3))*)(stack_ptr)--) = arg3;                              \
         *((typeof((arg4))*)(stack_ptr)--) = arg4;                              \
     }
+
+
+static inline ptr_t must_inline
+abi_get_callframe()
+{
+    ptr_t val;
+    asm("movl %%ebp, %0" : "=r"(val)::);
+    return val;
+}
+
+static inline ptr_t
+abi_get_retaddr()
+{
+    return *((ptr_t*)abi_get_callframe() + 1);
+}
+
+static inline ptr_t
+abi_get_retaddrat(ptr_t fp)
+{
+    return *((ptr_t*)fp + 1);
+}
 #endif
 #endif /* __LUNAIX_ABI_H */