lxdream.org :: lxdream/src/sh4/mmux86.c r1292:799fdd4f704a

filename	src/sh4/mmux86.c
changeset	1292:799fdd4f704a
prev	1067:d3c00ffccfcd
author	nkeynes
date	Fri Aug 24 08:53:50 2012 +1000 (8 years ago)
permissions	-rw-r--r--
last change	Move the generated prologue/epilogue code out into a common entry stub (reduces space requirements) and pre-save all saved registers. Change FASTCALL to use 3 regs instead of 2 since we can now keep everything in regs.

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     1.1 --- a/src/sh4/mmux86.c	Sun Jul 05 13:54:48 2009 +1000
     1.2 +++ b/src/sh4/mmux86.c	Fri Aug 24 08:53:50 2012 +1000
     1.3 @@ -70,10 +70,10 @@
     1.4              int rel = (*fn - xlat_output);
     1.5              JMP_prerel( rel ); // 5
     1.6          } else {
     1.7 -            MOVL_r32_r32( REG_ARG1, REG_ECX ); // 2
     1.8 -            SHRL_imm_r32( 12, REG_ECX );  // 3
     1.9 -            XLAT(addr_space, REG_ECX);                   // 14
    1.10 -            JMP_r32disp(REG_ECX, (((uintptr_t)out) - ((uintptr_t)&page->fn)) );    // 3
    1.11 +            MOVL_r32_r32( REG_ARG1, REG_CALLPTR ); // 2
    1.12 +            SHRL_imm_r32( 12, REG_CALLPTR );  // 3
    1.13 +            XLAT(addr_space, REG_CALLPTR);                   // 14
    1.14 +            JMP_r32disp(REG_CALLPTR, (((uintptr_t)out) - ((uintptr_t)&page->fn)) );    // 3
    1.15          }
    1.16      }
    1.17      
    1.18 @@ -105,21 +105,21 @@
    1.19      
    1.20      for( i=0; i<9; i++, out++ ) {
    1.21          *out = xlat_output;
    1.22 -        MOVL_r32_r32( REG_ARG1, REG_ECX );
    1.23 -        SHRL_imm_r32( 10, REG_ECX );
    1.24 -        ANDL_imms_r32( 0x3, REG_ECX );
    1.25 -        XLAT( (uintptr_t)&entry->subpages[0], REG_ECX );
    1.26 -        JMP_r32disp(REG_ECX, (((uintptr_t)out) - ((uintptr_t)&entry->fn)) );    // 3
    1.27 +        MOVL_r32_r32( REG_ARG1, REG_CALLPTR );
    1.28 +        SHRL_imm_r32( 10, REG_CALLPTR );
    1.29 +        ANDL_imms_r32( 0x3, REG_CALLPTR );
    1.30 +        XLAT( (uintptr_t)&entry->subpages[0], REG_CALLPTR );
    1.31 +        JMP_r32disp(REG_CALLPTR, (((uintptr_t)out) - ((uintptr_t)&entry->fn)) );    // 3
    1.32      }
    1.33  
    1.34      out = (uint8_t **)&entry->user_fn;
    1.35      for( i=0; i<9; i++, out++ ) {
    1.36          *out = xlat_output;
    1.37 -        MOVL_r32_r32( REG_ARG1, REG_ECX );
    1.38 -        SHRL_imm_r32( 10, REG_ECX );
    1.39 -        ANDL_imms_r32( 0x3, REG_ECX );
    1.40 -        XLAT( (uintptr_t)&entry->user_subpages[0], REG_ECX );
    1.41 -        JMP_r32disp(REG_ECX, (((uintptr_t)out) - ((uintptr_t)&entry->user_fn)) );    // 3
    1.42 +        MOVL_r32_r32( REG_ARG1, REG_CALLPTR );
    1.43 +        SHRL_imm_r32( 10, REG_CALLPTR );
    1.44 +        ANDL_imms_r32( 0x3, REG_CALLPTR );
    1.45 +        XLAT( (uintptr_t)&entry->user_subpages[0], REG_CALLPTR );
    1.46 +        JMP_r32disp(REG_CALLPTR, (((uintptr_t)out) - ((uintptr_t)&entry->user_fn)) );    // 3
    1.47      }
    1.48  
    1.49  }