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Merge change 7049

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* changes:
  Implement support for "char" local and global variables.
This commit is contained in:
Android (Google) Code Review 2009-07-13 18:49:02 -07:00
commit dc61060547
3 changed files with 86 additions and 3 deletions
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70
libacc/acc.cpp
View file

@ -1019,6 +1019,25 @@ class Compiler : public ErrorSink {
LOG_API("storeR0(%d);\n", ea);
TypeTag tag = pType->tag;
switch (tag) {
case TY_CHAR:
if (ea > -LOCAL && ea < LOCAL) {
// Local, fp relative
if (ea < -4095 || ea > 4095) {
error("Offset out of range: %08x", ea);
}
if (ea < 0) {
o4(0xE54B0000 | (0xfff & (-ea))); // strb r0, [fp,#-ea]
} else {
o4(0xE5CB0000 | (0xfff & ea)); // strb r0, [fp,#ea]
}
} else{
// Global, absolute
o4(0xE59F1000); // ldr r1, .L1
o4(0xEA000000); // b .L99
o4(ea); // .L1: .word 0
o4(0xE5C10000); // .L99: strb r0, [r1]
}
break;
case TY_POINTER:
case TY_INT:
case TY_FLOAT:
@ -1079,8 +1098,32 @@ class Compiler : public ErrorSink {
virtual void loadR0(int ea, bool isIncDec, int op, Type* pType) {
LOG_API("loadR0(%d, %d, %d, %d);\n", ea, isIncDec, op, pType);
TypeTag tag = collapseType(pType->tag);
TypeTag tag = pType->tag;
switch (tag) {
case TY_CHAR:
if (ea < LOCAL) {
// Local, fp relative
if (ea < -4095 || ea > 4095) {
error("Offset out of range: %08x", ea);
}
if (ea < 0) {
o4(0xE55B0000 | (0xfff & (-ea))); // ldrb r0, [fp,#-ea]
} else {
o4(0xE5DB0000 | (0xfff & ea)); // ldrb r0, [fp,#ea]
}
} else {
// Global, absolute
o4(0xE59F2000); // ldr r2, .L1
o4(0xEA000000); // b .L99
o4(ea); // .L1: .word ea
o4(0xE5D20000); // .L99: ldrb r0, [r2]
}
if (isIncDec) {
error("inc/dec not implemented for char.");
}
break;
case TY_POINTER:
case TY_INT:
case TY_FLOAT:
if (ea < LOCAL) {
@ -2027,6 +2070,13 @@ class Compiler : public ErrorSink {
virtual void storeR0(int ea, Type* pType) {
TypeTag tag = pType->tag;
switch (tag) {
case TY_CHAR:
if (ea < -LOCAL || ea > LOCAL) {
oad(0xa2, ea); // movb %al,ea
} else {
oad(0x8588, ea); // movb %al,ea(%ebp)
}
break;
case TY_INT:
case TY_POINTER:
gmov(6, ea); /* mov %eax, EA */
@ -2052,10 +2102,24 @@ class Compiler : public ErrorSink {
}
virtual void loadR0(int ea, bool isIncDec, int op, Type* pType) {
TypeTag tag = collapseType(pType->tag);
TypeTag tag = pType->tag;
switch (tag) {
case TY_CHAR:
if (ea < -LOCAL || ea > LOCAL) {
oad(0x05BE0F, ea); // movsbl ea,%eax
} else {
oad(0x85BE0F, ea); // movsbl ea(%ebp),%eax
}
if (isIncDec) {
error("inc/dec not implemented for char.");
}
break;
case TY_INT:
gmov(8, ea); /* mov EA, %eax */
case TY_POINTER:
if (tag == TY_CHAR) {
} else {
gmov(8, ea); /* mov EA, %eax */
}
if (isIncDec) {
/* Implement post-increment or post decrement.
*/

13
libacc/tests/data/char.c Normal file
View file

@ -0,0 +1,13 @@
char ga;
char gb;
int main() {
char a = 'c';
char b = a * 3;
printf("a = %d, b = %d\n", a, b);
ga = 'd';
gb = ga * 3;
printf("ga = %d, gb = %d\n", ga, gb);
return 0;
}

6
libacc/tests/test.py
View file

@ -250,6 +250,12 @@ Testing read/write (float*): 8.8 9.9
Testing read/write (double*): 8.8 9.9
""")
def testChar(self):
self.compileCheck(["-R", "data/char.c"], """Executing compiled code:
result: 0""", """a = 99, b = 41
ga = 100, gb = 44""")
if __name__ == '__main__':
if not outputCanRun():
print "Many tests are expected to fail, because acc is not a 32-bit x86 Linux executable."