ACC ARM codegen: implement /, %
diff --git a/libacc/acc.cpp b/libacc/acc.cpp
index 59ce9b4..567e25e 100644
--- a/libacc/acc.cpp
+++ b/libacc/acc.cpp
@@ -359,6 +359,12 @@
case OP_MUL:
o4(0x0E0000091); // mul r0,r1,r0
break;
+ case OP_DIV:
+ callRuntime(runtime_DIV);
+ break;
+ case OP_MOD:
+ callRuntime(runtime_MOD);
+ break;
case OP_PLUS:
o4(0xE0810000); // add r0,r1,r0
break;
@@ -670,6 +676,22 @@
return BRANCH_REL_ADDRESS_MASK & (value >> 2);
}
+ typedef int (*int2FnPtr)(int a, int b);
+ void callRuntime(int2FnPtr fn) {
+ o4(0xE59F2000); // ldr r2, .L1
+ o4(0xEA000000); // b .L99
+ o4((int) fn); //.L1: .word fn
+ o4(0xE12FFF32); //.L99: blx r2
+ }
+
+ static int runtime_DIV(int a, int b) {
+ return b / a;
+ }
+
+ static int runtime_MOD(int a, int b) {
+ return b % a;
+ }
+
void error(const char* fmt,...) {
va_list ap;
va_start(ap, fmt);
@@ -1189,7 +1211,7 @@
} else {
pGen->callRelative(n - codeBuf.getPC() - pGen->jumpOffset());
}
- if (l || n == 1)
+ if (l | (n == 1))
pGen->adjustStackAfterCall(l, n == 1);
}
}