am fb62cf96: Merge change 22143 into eclair

Merge commit 'fb62cf969013a67e1cd7712cd978f54dce27733b'

* commit 'fb62cf969013a67e1cd7712cd978f54dce27733b':
  Add ARM hardware floating point support.
This commit is contained in:
Jack Palevich 2009-08-20 15:39:25 -07:00 committed by Android Git Automerger
commit 423c05c48c
1 changed files with 344 additions and 15 deletions

View File

@ -43,6 +43,10 @@
#include "disassem.h"
#endif
#if (defined(__VFP_FP__) && !defined(__SOFTFP__))
#define ARM_USE_VFP
#endif
#include <acc/acc.h>
#define LOG_API(...) do {} while(0)
@ -684,7 +688,13 @@ class Compiler : public ErrorSink {
class ARMCodeGenerator : public CodeGenerator {
public:
ARMCodeGenerator() {}
ARMCodeGenerator() {
#ifdef ARM_USE_VFP
LOGD("Using ARM VFP hardware floating point.");
#else
LOGD("Using ARM soft floating point.");
#endif
}
virtual ~ARMCodeGenerator() {}
@ -721,6 +731,22 @@ class Compiler : public ErrorSink {
}
*(char*) (localVariableAddress) = localVariableSize;
#ifdef ARM_USE_VFP
{
Type* pReturnType = pDecl->pHead;
switch(pReturnType->tag) {
case TY_FLOAT:
o4(0xEE170A90); // fmrs r0, s15
break;
case TY_DOUBLE:
o4(0xEC510B17); // fmrrd r0, r1, d7
break;
default:
break;
}
}
#endif
// sp -> locals .... fp -> oldfp, retadr, arg0, arg1, ...
o4(0xE1A0E00B); // mov lr, fp
o4(0xE59BB000); // ldr fp, [fp]
@ -756,10 +782,18 @@ class Compiler : public ErrorSink {
switch (pType->tag) {
case TY_FLOAT:
#ifdef ARM_USE_VFP
o4(0xEDD07A00); // flds s15, [r0]
#else
o4(0xE5900000); // ldr r0, [r0]
#endif
break;
case TY_DOUBLE:
#ifdef ARM_USE_VFP
o4(0xED907B00); // fldd d7, [r0]
#else
o4(0xE1C000D0); // ldrd r0, [r0]
#endif
break;
default:
assert(false);
@ -777,15 +811,27 @@ class Compiler : public ErrorSink {
TypeTag tagR0 = pR0Type->tag;
switch(tagR0) {
case TY_FLOAT:
#ifdef ARM_USE_VFP
o4(0xEEF57A40); // fcmpzs s15
o4(0xEEF1FA10); // fmstat
#else
callRuntime((void*) runtime_is_non_zero_f);
o4(0xE3500000); // cmp r0,#0
#endif
break;
case TY_DOUBLE:
#ifdef ARM_USE_VFP
o4(0xEEB57B40); // fcmpzd d7
o4(0xEEF1FA10); // fmstat
#else
callRuntime((void*) runtime_is_non_zero_d);
o4(0xE3500000); // cmp r0,#0
#endif
break;
default:
o4(0xE3500000); // cmp r0,#0
break;
}
o4(0xE3500000); // cmp r0,#0
int branch = l ? 0x1A000000 : 0x0A000000; // bne : beq
return o4(branch | encodeAddress(t));
}
@ -829,6 +875,39 @@ class Compiler : public ErrorSink {
}
} else if (tagR0 == TY_DOUBLE || tagTOS == TY_DOUBLE) {
setupDoubleArgs();
#ifdef ARM_USE_VFP
o4(0xEEB46BC7); // fcmped d6, d7
o4(0xEEF1FA10); // fmstat
switch(op) {
case OP_EQUALS:
o4(0x03A00001); // moveq r0,#1
o4(0x13A00000); // movne r0,#0
break;
case OP_NOT_EQUALS:
o4(0x03A00000); // moveq r0,#0
o4(0x13A00001); // movne r0,#1
break;
case OP_LESS_EQUAL:
o4(0xD3A00001); // movle r0,#1
o4(0xC3A00000); // movgt r0,#0
break;
case OP_GREATER:
o4(0xD3A00000); // movle r0,#0
o4(0xC3A00001); // movgt r0,#1
break;
case OP_GREATER_EQUAL:
o4(0xA3A00001); // movge r0,#1
o4(0xB3A00000); // movlt r0,#0
break;
case OP_LESS:
o4(0xA3A00000); // movge r0,#0
o4(0xB3A00001); // movlt r0,#1
break;
default:
error("Unknown comparison op %d", op);
break;
}
#else
switch(op) {
case OP_EQUALS:
callRuntime((void*) runtime_cmp_eq_dd);
@ -852,8 +931,42 @@ class Compiler : public ErrorSink {
error("Unknown comparison op %d", op);
break;
}
#endif
} else {
setupFloatArgs();
#ifdef ARM_USE_VFP
o4(0xEEB47AE7); // fcmpes s14, s15
o4(0xEEF1FA10); // fmstat
switch(op) {
case OP_EQUALS:
o4(0x03A00001); // moveq r0,#1
o4(0x13A00000); // movne r0,#0
break;
case OP_NOT_EQUALS:
o4(0x03A00000); // moveq r0,#0
o4(0x13A00001); // movne r0,#1
break;
case OP_LESS_EQUAL:
o4(0xD3A00001); // movle r0,#1
o4(0xC3A00000); // movgt r0,#0
break;
case OP_GREATER:
o4(0xD3A00000); // movle r0,#0
o4(0xC3A00001); // movgt r0,#1
break;
case OP_GREATER_EQUAL:
o4(0xA3A00001); // movge r0,#1
o4(0xB3A00000); // movlt r0,#0
break;
case OP_LESS:
o4(0xA3A00000); // movge r0,#0
o4(0xB3A00001); // movlt r0,#1
break;
default:
error("Unknown comparison op %d", op);
break;
}
#else
switch(op) {
case OP_EQUALS:
callRuntime((void*) runtime_cmp_eq_ff);
@ -877,6 +990,7 @@ class Compiler : public ErrorSink {
error("Unknown comparison op %d", op);
break;
}
#endif
}
setR0Type(mkpInt);
}
@ -979,18 +1093,35 @@ class Compiler : public ErrorSink {
Type* pResultType = tagR0 > tagTOS ? pR0Type : pTOSType;
if (pResultType->tag == TY_DOUBLE) {
setupDoubleArgs();
switch(op) {
case OP_MUL:
callRuntime((void*) runtime_op_mul_dd);
#ifdef ARM_USE_VFP
o4(0xEE267B07); // fmuld d7, d6, d7
#else
callRuntime((void*) runtime_op_mul_dd);
#endif
break;
case OP_DIV:
#ifdef ARM_USE_VFP
o4(0xEE867B07); // fdivd d7, d6, d7
#else
callRuntime((void*) runtime_op_div_dd);
#endif
break;
case OP_PLUS:
#ifdef ARM_USE_VFP
o4(0xEE367B07); // faddd d7, d6, d7
#else
callRuntime((void*) runtime_op_add_dd);
#endif
break;
case OP_MINUS:
#ifdef ARM_USE_VFP
o4(0xEE367B47); // fsubd d7, d6, d7
#else
callRuntime((void*) runtime_op_sub_dd);
#endif
break;
default:
error("Unsupported binary floating operation %d\n", op);
@ -1000,16 +1131,32 @@ class Compiler : public ErrorSink {
setupFloatArgs();
switch(op) {
case OP_MUL:
#ifdef ARM_USE_VFP
o4(0xEE677A27); // fmuls s15, s14, s15
#else
callRuntime((void*) runtime_op_mul_ff);
#endif
break;
case OP_DIV:
#ifdef ARM_USE_VFP
o4(0xEEC77A27); // fdivs s15, s14, s15
#else
callRuntime((void*) runtime_op_div_ff);
#endif
break;
case OP_PLUS:
#ifdef ARM_USE_VFP
o4(0xEE777A27); // fadds s15, s14, s15
#else
callRuntime((void*) runtime_op_add_ff);
#endif
break;
case OP_MINUS:
#ifdef ARM_USE_VFP
o4(0xEE777A67); // fsubs s15, s14, s15
#else
callRuntime((void*) runtime_op_sub_ff);
#endif
break;
default:
error("Unsupported binary floating operation %d\n", op);
@ -1034,10 +1181,24 @@ class Compiler : public ErrorSink {
o4(0x13A00000); // movne r0,#0
break;
case TY_FLOAT:
callRuntime((void*) runtime_is_zero_f);
#ifdef ARM_USE_VFP
o4(0xEEF57A40); // fcmpzs s15
o4(0xEEF1FA10); // fmstat
o4(0x03A00001); // moveq r0,#1
o4(0x13A00000); // movne r0,#0
#else
callRuntime((void*) runtime_is_zero_f);
#endif
break;
case TY_DOUBLE:
callRuntime((void*) runtime_is_zero_d);
#ifdef ARM_USE_VFP
o4(0xEEB57B40); // fcmpzd d7
o4(0xEEF1FA10); // fmstat
o4(0x03A00001); // moveq r0,#1
o4(0x13A00000); // movne r0,#0
#else
callRuntime((void*) runtime_is_zero_d);
#endif
break;
default:
error("gUnaryCmp unsupported type");
@ -1070,9 +1231,17 @@ class Compiler : public ErrorSink {
switch (op) {
case OP_MINUS:
if (tag == TY_FLOAT) {
#ifdef ARM_USE_VFP
o4(0xEEF17A67); // fnegs s15, s15
#else
callRuntime((void*) runtime_op_neg_f);
#endif
} else {
#ifdef ARM_USE_VFP
o4(0xEEB17B47); // fnegd d7, d7
#else
callRuntime((void*) runtime_op_neg_d);
#endif
}
break;
case OP_BIT_NOT:
@ -1092,6 +1261,23 @@ class Compiler : public ErrorSink {
virtual void pushR0() {
Type* pR0Type = getR0Type();
TypeTag r0ct = collapseType(pR0Type->tag);
#ifdef ARM_USE_VFP
switch (r0ct ) {
case TY_FLOAT:
o4(0xED6D7A01); // fstmfds sp!,{s15}
mStackUse += 4;
break;
case TY_DOUBLE:
o4(0xED2D7B02); // fstmfdd sp!,{d7}
mStackUse += 8;
break;
default:
o4(0xE92D0001); // stmfd sp!,{r0}
mStackUse += 4;
}
#else
if (r0ct != TY_DOUBLE) {
o4(0xE92D0001); // stmfd sp!,{r0}
mStackUse += 4;
@ -1099,6 +1285,7 @@ class Compiler : public ErrorSink {
o4(0xE92D0003); // stmfd sp!,{r0,r1}
mStackUse += 8;
}
#endif
pushType();
LOG_STACK("pushR0: %d\n", mStackUse);
}
@ -1123,7 +1310,13 @@ class Compiler : public ErrorSink {
virtual void popR0() {
Type* pTOSType = getTOSType();
switch (collapseType(pTOSType->tag)){
TypeTag tosct = collapseType(pTOSType->tag);
#ifdef ARM_USE_VFP
if (tosct == TY_FLOAT || tosct == TY_DOUBLE) {
error("Unsupported popR0 float/double");
}
#endif
switch (tosct){
case TY_INT:
case TY_FLOAT:
o4(0xE8BD0001); // ldmfd sp!,{r0}
@ -1152,9 +1345,15 @@ class Compiler : public ErrorSink {
switch (pDestType->tag) {
case TY_POINTER:
case TY_INT:
case TY_FLOAT:
o4(0xE5820000); // str r0, [r2]
break;
case TY_FLOAT:
#ifdef ARM_USE_VFP
o4(0xEDC27A00); // fsts s15, [r2, #0]
#else
o4(0xE5820000); // str r0, [r2]
#endif
break;
case TY_SHORT:
o4(0xE1C200B0); // strh r0, [r2]
break;
@ -1162,7 +1361,11 @@ class Compiler : public ErrorSink {
o4(0xE5C20000); // strb r0, [r2]
break;
case TY_DOUBLE:
#ifdef ARM_USE_VFP
o4(0xED827B00); // fstd d7, [r2, #0]
#else
o4(0xE1C200F0); // strd r0, [r2]
#endif
break;
default:
error("storeR0ToTOS: unimplemented type %d",
@ -1179,9 +1382,15 @@ class Compiler : public ErrorSink {
switch (tag) {
case TY_POINTER:
case TY_INT:
case TY_FLOAT:
o4(0xE5900000); // ldr r0, [r0]
break;
case TY_FLOAT:
#ifdef ARM_USE_VFP
o4(0xEDD07A00); // flds s15, [r0, #0]
#else
o4(0xE5900000); // ldr r0, [r0]
#endif
break;
case TY_SHORT:
o4(0xE1D000F0); // ldrsh r0, [r0]
break;
@ -1189,7 +1398,11 @@ class Compiler : public ErrorSink {
o4(0xE5D00000); // ldrb r0, [r0]
break;
case TY_DOUBLE:
#ifdef ARM_USE_VFP
o4(0xED907B00); // fldd d7, [r0, #0]
#else
o4(0xE1C000D0); // ldrd r0, [r0]
#endif
break;
case TY_ARRAY:
pNewType = pNewType->pTail;
@ -1272,25 +1485,55 @@ class Compiler : public ErrorSink {
TypeTag destTag = collapseType(pType->tag);
if (r0Tag == TY_INT) {
if (destTag == TY_FLOAT) {
#ifdef ARM_USE_VFP
o4(0xEE070A90); // fmsr s15, r0
o4(0xEEF87AE7); // fsitos s15, s15
#else
callRuntime((void*) runtime_int_to_float);
#endif
} else {
assert(destTag == TY_DOUBLE);
#ifdef ARM_USE_VFP
o4(0xEE070A90); // fmsr s15, r0
o4(0xEEB87BE7); // fsitod d7, s15
#else
callRuntime((void*) runtime_int_to_double);
#endif
}
} else if (r0Tag == TY_FLOAT) {
if (destTag == TY_INT) {
#ifdef ARM_USE_VFP
o4(0xEEFD7AE7); // ftosizs s15, s15
o4(0xEE170A90); // fmrs r0, s15
#else
callRuntime((void*) runtime_float_to_int);
#endif
} else {
assert(destTag == TY_DOUBLE);
#ifdef ARM_USE_VFP
o4(0xEEB77AE7); // fcvtds d7, s15
#else
callRuntime((void*) runtime_float_to_double);
#endif
}
} else {
assert (r0Tag == TY_DOUBLE);
if (destTag == TY_INT) {
#ifdef ARM_USE_VFP
o4(0xEEFD7BC7); // ftosizd s15, d7
o4(0xEE170A90); // fmrs r0, s15
#else
callRuntime((void*) runtime_double_to_int);
#endif
} else {
assert(destTag == TY_FLOAT);
#ifdef ARM_USE_VFP
o4(0xEEF77BC7); // fcvtsd s15, d7
#else
callRuntime((void*) runtime_double_to_float);
#endif
}
}
}
@ -1305,9 +1548,37 @@ class Compiler : public ErrorSink {
convertR0(pArgType);
Type* pR0Type = getR0Type();
TypeTag r0ct = collapseType(pR0Type->tag);
#ifdef ARM_USE_VFP
switch(r0ct) {
case TY_INT:
case TY_FLOAT:
if (l < 0 || l > 4096-4) {
error("l out of range for stack offset: 0x%08x", l);
}
o4(0xE58D0000 | l); // str r0, [sp, #l]
return 4;
case TY_FLOAT:
if (l < 0 || l > 1020 || (l & 3)) {
error("l out of range for stack offset: 0x%08x", l);
}
o4(0xEDCD7A00 | (l >> 2)); // fsts s15, [sp, #l]
return 4;
case TY_DOUBLE: {
// Align to 8 byte boundary
int l2 = (l + 7) & ~7;
if (l2 < 0 || l2 > 1020 || (l2 & 3)) {
error("l out of range for stack offset: 0x%08x", l);
}
o4(0xED8D7B00 | (l2 >> 2)); // fstd d7, [sp, #l2]
return (l2 - l) + 8;
}
default:
assert(false);
return 0;
}
#else
switch(r0ct) {
case TY_INT:
case TY_FLOAT:
if (l < 0 || l > 4096-4) {
error("l out of range for stack offset: 0x%08x", l);
}
@ -1327,6 +1598,7 @@ class Compiler : public ErrorSink {
assert(false);
return 0;
}
#endif
}
virtual void endFunctionCallArguments(Type* pDecl, int a, int l) {
@ -1370,7 +1642,6 @@ class Compiler : public ErrorSink {
virtual void callIndirect(int l, Type* pFunc) {
assert(pFunc->tag == TY_FUNC);
popType(); // Get rid of indirect fn pointer type
setR0Type(pFunc->pHead);
int argCount = l >> 2;
int poppedArgs = argCount > 4 ? 4 : argCount;
int adjustedL = l - (poppedArgs << 2) + mStackAlignmentAdjustment;
@ -1379,6 +1650,20 @@ class Compiler : public ErrorSink {
}
o4(0xE59DC000 | (0xfff & adjustedL)); // ldr r12, [sp,#adjustedL]
o4(0xE12FFF3C); // blx r12
Type* pReturnType = pFunc->pHead;
setR0Type(pReturnType);
#ifdef ARM_USE_VFP
switch(pReturnType->tag) {
case TY_FLOAT:
o4(0xEE070A90); // fmsr s15, r0
break;
case TY_DOUBLE:
o4(0xEC410B17); // fmdrr d7, r0, r1
break;
default:
break;
}
#endif
}
virtual void adjustStackAfterCall(Type* pDecl, int l, bool isIndirect) {
@ -1594,7 +1879,7 @@ class Compiler : public ErrorSink {
popType();
}
/* Pop TOS to R1
/* Pop TOS to R1 (use s14 if VFP)
* Make sure both R0 and TOS are floats. (Could be ints)
* We know that at least one of R0 and TOS is already a float
*/
@ -1605,26 +1890,41 @@ class Compiler : public ErrorSink {
TypeTag tagTOS = collapseType(pTOSType->tag);
if (tagR0 != TY_FLOAT) {
assert(tagR0 == TY_INT);
#ifdef ARM_USE_VFP
o4(0xEE070A90); // fmsr s15, r0
o4(0xEEF87AE7); // fsitos s15, s15
#else
callRuntime((void*) runtime_int_to_float);
#endif
}
if (tagTOS != TY_FLOAT) {
assert(tagTOS == TY_INT);
assert(tagR0 == TY_FLOAT);
#ifdef ARM_USE_VFP
o4(0xECBD7A01); // fldmfds sp!, {s14}
o4(0xEEB87AC7); // fsitos s14, s14
#else
o4(0xE92D0001); // stmfd sp!,{r0} // push R0
o4(0xE59D0004); // ldr r0, [sp, #4]
callRuntime((void*) runtime_int_to_float);
o4(0xE1A01000); // mov r1, r0
o4(0xE8BD0001); // ldmfd sp!,{r0} // pop R0
o4(0xE28DD004); // add sp, sp, #4 // Pop sp
#endif
} else {
// Pop TOS
#ifdef ARM_USE_VFP
o4(0xECBD7A01); // fldmfds sp!, {s14}
#else
o4(0xE8BD0002); // ldmfd sp!,{r1}
#endif
}
mStackUse -= 4;
popType();
}
/* Pop TOS into R2..R3
/* Pop TOS into R2..R3 (use D6 if VFP)
* Make sure both R0 and TOS are doubles. Could be floats or ints.
* We know that at least one of R0 and TOS are already a double.
*/
@ -1636,13 +1936,33 @@ class Compiler : public ErrorSink {
TypeTag tagTOS = collapseType(pTOSType->tag);
if (tagR0 != TY_DOUBLE) {
if (tagR0 == TY_INT) {
#ifdef ARM_USE_VFP
o4(0xEE070A90); // fmsr s15, r0
o4(0xEEB87BE7); // fsitod d7, s15
#else
callRuntime((void*) runtime_int_to_double);
#endif
} else {
assert(tagR0 == TY_FLOAT);
#ifdef ARM_USE_VFP
o4(0xEEB77AE7); // fcvtds d7, s15
#else
callRuntime((void*) runtime_float_to_double);
#endif
}
}
if (tagTOS != TY_DOUBLE) {
#ifdef ARM_USE_VFP
if (tagTOS == TY_INT) {
o4(0xECFD6A01); // fldmfds sp!,{s13}
o4(0xEEB86BE6); // fsitod d6, s13
} else {
assert(tagTOS == TY_FLOAT);
o4(0xECFD6A01); // fldmfds sp!,{s13}
o4(0xEEB76AE6); // fcvtds d6, s13
}
#else
o4(0xE92D0003); // stmfd sp!,{r0,r1} // push r0,r1
o4(0xE59D0008); // ldr r0, [sp, #8]
if (tagTOS == TY_INT) {
@ -1655,9 +1975,14 @@ class Compiler : public ErrorSink {
o4(0xE1A03001); // mov r3, r1
o4(0xE8BD0003); // ldmfd sp!,{r0, r1} // Restore R0
o4(0xE28DD004); // add sp, sp, #4 // Pop sp
#endif
mStackUse -= 4;
} else {
#ifdef ARM_USE_VFP
o4(0xECBD6B02); // fldmfdd sp!, {d6}
#else
o4(0xE8BD000C); // ldmfd sp!,{r2,r3}
#endif
mStackUse -= 8;
}
popType();
@ -1696,6 +2021,8 @@ class Compiler : public ErrorSink {
return a % b;
}
#ifndef ARM_USE_VFP
// Comparison to zero
static int runtime_is_non_zero_f(float a) {
@ -1838,6 +2165,8 @@ class Compiler : public ErrorSink {
return -a;
}
#endif
static const int STACK_ALIGNMENT = 8;
int mStackUse;
// This variable holds the amount we adjusted the stack in the most
@ -2677,9 +3006,9 @@ class Compiler : public ErrorSink {
return mpBase->leaForward(ea, pPointerType);
}
virtual void convertR0(Type* pType){
fprintf(stderr, "convertR0(pType tag=%d)\n", pType->tag);
mpBase->convertR0(pType);
virtual void convertR0Imp(Type* pType, bool isCast){
fprintf(stderr, "convertR0(pType tag=%d, %d)\n", pType->tag, isCast);
mpBase->convertR0Imp(pType, isCast);
}
virtual int beginFunctionCallArguments() {