Code-base clean-up and refactoring (#47)

[lunaix-os.git] / lunaix-os / arch / x86 / includes / asm / variants / abi32.h

diff --git a/lunaix-os/arch/x86/includes/asm/variants/abi32.h b/lunaix-os/arch/x86/includes/asm/variants/abi32.h
new file mode 100644 (file)
index 0000000..d62aae3
--- /dev/null
+++ b/lunaix-os/arch/x86/includes/asm/variants/abi32.h
@@ -0,0 +1,41 @@
+#ifndef __LUNAIX_ARCH_ABI32_H
+#define __LUNAIX_ARCH_ABI32_H
+
+#include "asm/x86.h"
+
+#define stack_alignment 0xfffffff0
+
+#ifndef __ASM__
+#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 ptr_t must_inline
+abi_get_callframe()
+{
+    ptr_t val;
+    asm("movl %%ebp, %0" : "=r"(val)::);
+    return val;
+}
+
+#endif
+#endif /* __LUNAIX_ARCH_ABI32_H */