Changeset 14881 in vbox for trunk/src/recompiler_new/tcg/i386

Timestamp:

Dec 1, 2008 5:54:20 PM (16 years ago)

Author:

vboxsync

Message:

implemented stack alignment for Darwin

File:

• trunk/src/recompiler_new/tcg/i386/tcg-target.c (modified) (6 diffs)

trunk/src/recompiler_new/tcg/i386/tcg-target.c

@@ -429 +429 @@
 
 #ifdef VBOX
-DECLINLINE(void) tcg_out_long_call(TCGContext *s, tcg_target_long dst) 
-{
-    intptr_t disp = dst - (tcg_target_long)s->code_ptr - 5;
+DECLINLINE(void) 
+tcg_out_long_call(TCGContext *s, void* dst) 
+{
+    intptr_t disp = (uintptr_t)dst - (uintptr_t)s->code_ptr - 5;
     tcg_out8(s,  0xe8); /* call disp32 */
     tcg_out32(s, disp); /* disp32 */
 }
-
+DECLINLINE(void) 
+tcg_out_long_jmp(TCGContext *s, void* dst) 
+{
+    intptr_t disp = (uintptr_t)dst - (uintptr_t)s->code_ptr - 5;
+    tcg_out8(s,  0xe9); /* jmp disp32 */
+    tcg_out32(s, disp); /* disp32 */
+}
 #endif /* VBOX */
 
@@ -539 +546 @@
 };
 
+#ifdef RT_OS_DARWIN
 static void tcg_out_vbox_phys_read(TCGContext *s, int index, 
                                    int addr_reg, 
-                                   int data_reg, int data_reg2) {
+                                   int data_reg, int data_reg2) 
+{
+    int useReg2 = ((index & 3) == 3);
+
+    /** @todo:  should we make phys addess accessors fastcalls - probably not a big deal */
+    /* out parameter (address), note that phys address is always 64-bit */
+    AssertMsg(sizeof(RTGCPHYS) == 8, ("Physical address must be 64-bits, update caller\n"));
+    
+    tcg_out8(s, 0xf7); tcg_out8(s, 0xc4); tcg_out32(s, 0xf); /* test $0xf, %esp */
+    tcg_out8(s, 0x74); tcg_out8(s, 0x4); /* je 1 */ 
+    tcg_out8(s, 0x8d);  tcg_out8(s, 0x64);  tcg_out8(s, 0x24);  tcg_out8(s, 0xf8);      /* lea    -0x8(%esp),%esp */
+   /* 1: */
+    tcg_out8(s, 0x6a); tcg_out8(s, 0x00); /* push $0 */
+    tcg_out_push(s, addr_reg);
+
+    tcg_out8(s, 0xe8);  tcg_out32(s, 0); /* call 2 */
+   /* 2: */
+    tcg_out8(s, 0x74); tcg_out8(s, 0x6); /* je 3 */ 
+    tcg_out8(s, 0x83); tcg_out8(s, 0x04); tcg_out8(s, 0x24); tcg_out8(s, 0x11); /* addl   $0x11,(%esp) */
+    tcg_out8(s, 0xeb); tcg_out8(s, 0x04); /* jmp 4 */
+   /* 3: */
+    tcg_out8(s, 0x83); tcg_out8(s, 0x04); tcg_out8(s, 0x24); tcg_out8(s, 0x14); /* addl   $0x14,(%esp) */
+   /* 4: */
+    tcg_out_long_jmp(s, vbox_ld_helpers[index]);
+
+   /* return point 1: clear both parameter and alignment */ 
+    tcg_out8(s, 0x83);  tcg_out8(s, 0xc4);   tcg_out8(s, 0x08); /* add    $0x8,%esp */
+   /* return point 2: clear only parameter */ 
+    tcg_out8(s, 0x83);  tcg_out8(s, 0xc4);   tcg_out8(s, 0x08); /* add    $0x8,%esp */
+    /* mov %eax, data_reg */
+    tcg_out_mov(s, data_reg, TCG_REG_EAX);
+
+    /* returned 64-bit value */
+    if (useReg2)
+      tcg_out_mov(s, data_reg2, TCG_REG_EDX);
+}
+#else
+static void tcg_out_vbox_phys_read(TCGContext *s, int index, 
+                                   int addr_reg, 
+                                   int data_reg, int data_reg2) 
+{
     int useReg2 = ((index & 3) == 3);
 
@@ -550 +598 @@
     tcg_out_push(s, addr_reg);
 
-    tcg_out_long_call(s, (tcg_target_long)vbox_ld_helpers[index]);
+    tcg_out_long_call(s, vbox_ld_helpers[index]);
 
     /* mov %eax, data_reg */
@@ -562 +610 @@
     tcg_out_addi(s, TCG_REG_ESP, 8);
 }
+#endif
+
 
 static void tcg_out_vbox_phys_write(TCGContext *s, int index, 
@@ -580 +630 @@
 
     /* call it */
-    tcg_out_long_call(s, (tcg_target_long)vbox_st_helpers[index]);
+    tcg_out_long_call(s, vbox_st_helpers[index]);
     
     /* clean stack after us */
@@ -1326 +1376 @@
     TCG_REG_EBP,
     TCG_REG_EBX,
-    TCG_REG_ESI, /* currently used for the global env, so no
-                    need to save */
+    /* TCG_REG_ESI ,*/ /* currently used for the global env, so no
+                          need to save */
     TCG_REG_EDI,
 #endif