Unify Assembler files between Linux and Windows

Add new macro ASMABI used by Windows to change
calling API to "sysv_abi".

Reviewed-by: Attila Fülöp <attila@fueloep.org>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jorgen Lundman <lundman@lundman.net>
Closes #14228

module/lua/ldo.c

@@ -9,6 +9,7 @@
 #define LUA_CORE
 
 #include <sys/lua/lua.h>
+#include <sys/asm_linkage.h>
 
 #include "lapi.h"
 #include "ldebug.h"
@@ -27,7 +28,6 @@
 #include "lzio.h"
 
 
-
 /* Return the number of bytes available on the stack. */
 #if defined (_KERNEL) && defined(__linux__)
 #include <asm/current.h>
@@ -90,8 +90,8 @@ static intptr_t stack_remaining(void) {
 
 typedef	struct _label_t { long long unsigned val[JMP_BUF_CNT]; } label_t;
 
-int setjmp(label_t *) __attribute__ ((__nothrow__));
-extern __attribute__((noreturn)) void longjmp(label_t *);
+int ASMABI setjmp(label_t *) __attribute__ ((__nothrow__));
+extern __attribute__((noreturn)) void ASMABI longjmp(label_t *);
 
 #define LUAI_THROW(L,c)		longjmp(&(c)->b)
 #define LUAI_TRY(L,c,a)		if (setjmp(&(c)->b) == 0) { a }

module/lua/setjmp/setjmp_x86_64.S

@@ -27,28 +27,16 @@
 #include <linux/linkage.h>
 #endif
 
-#ifndef RET
-#define	RET	ret
-#endif
-
-#undef ENTRY
-#define	ENTRY(x) \
-	.text; \
-	.align	8; \
-	.globl	x; \
-	.type	x, @function; \
-x:
-
-#define	SET_SIZE(x) \
-	.size	x, [.-x]
-
 /*
  * Setjmp and longjmp implement non-local gotos using state vectors
  * type label_t.
  */
 #ifdef __x86_64__
 
-	ENTRY(setjmp)
+#define _ASM
+#include <sys/asm_linkage.h>
+
+ENTRY_ALIGN(setjmp, 8)
 	movq	%rsp, 0(%rdi)
 	movq	%rbp, 8(%rdi)
 	movq	%rbx, 16(%rdi)
@@ -62,7 +50,7 @@ x:
 	RET
 	SET_SIZE(setjmp)
 
-	ENTRY(longjmp)
+ENTRY_ALIGN(longjmp, 8)
 	movq	0(%rdi), %rsp
 	movq	8(%rdi), %rbp
 	movq	16(%rdi), %rbx