* Modify simulator and ARM code generator to avoid swi...

src/arm/constants-arm.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 10 matching lines @@
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_ARM_CONSTANTS_ARM_H_
 #define V8_ARM_CONSTANTS_ARM_H_
 
+// The simulator emulates the EABI so we define the __ARM_EABI__ macro if we
+// are not running on real ARM hardware.  One reason for this is that the
+// old ABI uses fp registers in the calling convention and the simulator does
+// not simulate fp registers or coroutine instructions.
+#ifndef __arm__
+# ifdef __ARM_EABI__
+#   undef __ARM_EABI__
+# endif
+# define __ARM_EABI__ 1

[iposva, 2009/06/08 21:48:41]

It makes me a bit uncomfortable to be defining "compiler reserved" macros, but I
guess this should be fine.

[Erik Corry, 2009/06/09 09:27:00]

Fixed with the introduction of USE_ARM_EABI macro instead.

+#endif
+
 namespace assembler {
 namespace arm {
 
 // Defines constants and accessor classes to assemble, disassemble and
 // simulate ARM instructions.
 //
 // Section references in the code refer to the "ARM Architecture Reference
 // Manual" from July 2005 (available at http://www.arm.com/miscPDFs/14128.pdf)
 //
 // Constants for specific fields are defined in their respective named enums.
@@ skipping 56 matching lines @@
   ASR = 2,  // Arithmetic shift right
   ROR = 3,  // Rotate right
   max_shift = 4
 };
 
 
 // Special Software Interrupt codes when used in the presence of the ARM
 // simulator.
 enum SoftwareInterruptCodes {
   // transition to C code
-  call_rt_r5 = 0x10,
-  call_rt_r2 = 0x11,
+  call_rt_redirected = 0x10,
   // break point
-  break_point = 0x20,
-  // FP operations.  These simulate calling into C for a moment to do fp ops.
-  // They should trash all caller-save registers.
-  simulator_fp_add = 0x21,
-  simulator_fp_sub = 0x22,
-  simulator_fp_mul = 0x23
+  break_point = 0x20
 };
 
 
 typedef int32_t instr_t;
 
 
 // The class Instr enables access to individual fields defined in the ARM
 // architecture instruction set encoding as described in figure A3-1.
 //
 // Example: Test whether the instruction at ptr does set the condition code
@@ skipping 106 matching lines @@
 
  private:
   // We need to prevent the creation of instances of class Instr.
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
 
 } }  // namespace assembler::arm
 
 #endif  // V8_ARM_CONSTANTS_ARM_H_