lxdream.org :: lxdream/src/xlat/x86/amd64abi.h r1112:4cac5e474d4c

filename	src/xlat/x86/amd64abi.h
changeset	1112:4cac5e474d4c
prev	1067:d3c00ffccfcd
next	1125:9dd5dee45db9
author	nkeynes
date	Tue Jul 13 18:23:16 2010 +1000 (13 years ago)
permissions	-rw-r--r--
last change	Rearrange the main translation loop to allow translated blocks to jump directly to their successors without needing to return to the main loop in between. Shaves about 6% off the core runtime.

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     1.1 --- a/src/xlat/x86/amd64abi.h	Sun Jul 05 13:54:48 2009 +1000
     1.2 +++ b/src/xlat/x86/amd64abi.h	Tue Jul 13 18:23:16 2010 +1000
     1.3 @@ -94,6 +94,8 @@
     1.4      CALL_r32disp(preg, disp);    
     1.5  }
     1.6  
     1.7 +#define PROLOGUE_SIZE 15
     1.8 +
     1.9  /**
    1.10   * Emit the 'start of block' assembly. Sets up the stack frame and save
    1.11   * SI/DI as required
    1.12 @@ -102,6 +104,7 @@
    1.13  {
    1.14      PUSH_r32(REG_RBP);
    1.15      SUBQ_imms_r64( 16, REG_RSP ); 
    1.16 +    MOVP_immptr_rptr( ((uint8_t *)&sh4r) + 128, REG_EBP );
    1.17  }
    1.18  
    1.19  static inline void exit_block( )