lxdream.org :: lxdream/src/sh4/sh4trans.c r914:72abecf5a315

filename	src/sh4/sh4trans.c
changeset	914:72abecf5a315
prev	906:268ea359f884
next	936:f394309c399a
next	953:f4a156508ad1
author	nkeynes
date	Wed Nov 05 10:05:08 2008 +0000 (12 years ago)
permissions	-rw-r--r--
last change	Fix (extremely boneheaded) failure to convert pc to physical address before storing in the translation cache (in other words, the translation cache was effectively disabled for MMU code). MMU code is now about 3 times faster...

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     1.1 --- a/src/sh4/sh4trans.c	Thu Oct 30 00:06:49 2008 +0000
     1.2 +++ b/src/sh4/sh4trans.c	Wed Nov 05 10:05:08 2008 +0000
     1.3 @@ -78,6 +78,7 @@
     1.4   * Translate a linear basic block, ie all instructions from the start address
     1.5   * (inclusive) until the next branch/jump instruction or the end of the page
     1.6   * is reached.
     1.7 + * @param start VMA of the block start (which must already be in the icache)
     1.8   * @return the address of the translated block
     1.9   * eg due to lack of buffer space.
    1.10   */
    1.11 @@ -86,7 +87,7 @@
    1.12      sh4addr_t pc = start;
    1.13      sh4addr_t lastpc = (pc&0xFFFFF000)+0x1000;
    1.14      int done, i;
    1.15 -    xlat_current_block = xlat_start_block( start );
    1.16 +    xlat_current_block = xlat_start_block( GET_ICACHE_PHYS(start) );
    1.17      xlat_output = (uint8_t *)xlat_current_block->code;
    1.18      xlat_recovery_posn = 0;
    1.19      uint8_t *eob = xlat_output + xlat_current_block->size;