Rename some internal functions to avoid namespace pollution

src/lsi/abi.h

@@ -7,11 +7,11 @@ typedef int (*vm_intfn)(void);
  * included in the ABI function table
  */
 
-int vm_intfn_nop(void);
-int vm_intfn_global_store(void);
-int vm_intfn_global_load(void);
-int vm_intfn_global_array_store(void);
-int vm_intfn_global_array_load(void);
+int vm_intfn___nop(void);
+int vm_intfn___global_store(void);
+int vm_intfn___global_load(void);
+int vm_intfn___global_array_store(void);
+int vm_intfn___global_array_load(void);
 int vm_intfn_printint(void);
 int vm_intfn_printreal(void);
 int vm_intfn_printstr(void);

src/lsi/abispec

@@ -2,11 +2,11 @@
 
 /* Function assignments */
 
-function nop
-function global_store
-function global_load
-function global_array_store
-function global_array_load
+function __nop
+function __global_store
+function __global_load
+function __global_array_store
+function __global_array_load
 function printint
 function printreal
 function printstr

src/lsi/vm.c

@@ -84,7 +84,7 @@ char *stack_getstr(struct vm_thread *thread, int len, int count);
 void stack_poke(struct vm_thread *thread, int count, stkentry value);
 void stack_pokereal(struct vm_thread *thread, int count, float value);
 
-int vm_intfn_nop(void)
+int vm_intfn___nop(void)
 {
 	/* Do nothing */
 	return 1;
@@ -95,7 +95,7 @@ int vm_intfn_nop(void)
  * The compiler does not allocate space for a return value.
  * They also change the stack pointer.
  */
-int vm_intfn_global_store(void)
+int vm_intfn___global_store(void)
 {
 	int len, next, value;
 	struct hashentry *hashptr;
@@ -130,7 +130,7 @@ gstoreout:
 	return 1;
 }
 
-int vm_intfn_global_load(void)
+int vm_intfn___global_load(void)
 {
 	int len, next, value;
 	struct hashentry *hashptr;
@@ -163,7 +163,7 @@ gloadout:
 	return 1;
 }
 
-int vm_intfn_global_array_store(void)
+int vm_intfn___global_array_store(void)
 {
 	int len, next, value, index;
 	struct hashentry *hashptr;
@@ -210,7 +210,7 @@ gstorearrayout:
 	return 1;
 }
 
-int vm_intfn_global_array_load(void)
+int vm_intfn___global_array_load(void)
 {
 	int len, next, value, index;
 	struct hashentry *hashptr;