5 files changed, 9 insertions, 9 deletions
diff --git a/src/emu/cpu.c b/src/emu/cpu.c
index 1ac1517..fc3d229 100644
--- a/src/emu/cpu.c
+++ b/src/emu/cpu.c
@@ -13,7 +13,7 @@
 #include "syscall.h"
 
 /* stack pointer register */
-uint32_t SP;
+uint32_t StP;
 
 /* base pointer register */
 uint32_t BP;
diff --git a/src/emu/cpu.h b/src/emu/cpu.h
index 6f2a077..b580672 100644
--- a/src/emu/cpu.h
+++ b/src/emu/cpu.h
@@ -18,7 +18,7 @@ enum {
 void trap(int num);
 
 /* stack pointer */
-extern uint32_t SP;
+extern uint32_t StP;
 
 /* base pointer */
 extern uint32_t BP;
diff --git a/src/emu/mem.c b/src/emu/mem.c
index 21caafd..5ab8389 100644
--- a/src/emu/mem.c
+++ b/src/emu/mem.c
@@ -33,14 +33,14 @@ uint32_t load(size_t addr)
 void push(uint32_t value)
 {
 	//debug("push(%"PRIu32")", value);
-	GPR[SP] -= 4;
-	store(GPR[SP], value);
+	GPR[StP] -= 4;
+	store(GPR[StP], value);
 }
 
 uint32_t pop(void)
 {
-	uint32_t tmp32 = load(GPR[SP]);
+	uint32_t tmp32 = load(GPR[StP]);
 	//debug("pop(%"PRIu32")", tmp32);
-	GPR[SP] += 4;
+	GPR[StP] += 4;
 	return tmp32;
 }
diff --git a/src/emu/risci.c b/src/emu/risci.c
index a7c99bf..adae285 100644
--- a/src/emu/risci.c
+++ b/src/emu/risci.c
@@ -55,9 +55,9 @@ void read_program(const char *program)
 
 	/* initialize pseudo registers */
 	BP = reg_size - 3;
-	SP = reg_size - 2;
+	StP = reg_size - 2;
 	RV = reg_size - 1;
-	GPR[BP] = GPR[SP] = mem_size;
+	GPR[BP] = GPR[StP] = mem_size;
 	GPR[RV] = 0;
 
 	assert(read(pfd, MEM, sb.st_size - sizeof(inst_t)) == (ssize_t)(sb.st_size - sizeof(inst_t)));
diff --git a/src/emu/syscall.c b/src/emu/syscall.c
index 92cab22..c573a94 100644
--- a/src/emu/syscall.c
+++ b/src/emu/syscall.c
@@ -7,7 +7,7 @@
 #include "mem.h"
 #include "syscall.h"
 
-#define arg(n) load(GPR[SP] + 4*n)
+#define arg(n) load(GPR[StP] + 4*n)
 
 void do_syscall(void)
 {