PCem

changeset 16:18fcddb6b75c

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Fixed 0fh prefix illegal instructions.
author TomW
date Sat Aug 03 20:40:56 2013 +0100
parents cdce787defd5
children 5fabef03e81b
files src/386_ops.h
diffstat 1 files changed, 1 insertions(+), 16 deletions(-) [+]
line diff
     1.1 --- a/src/386_ops.h	Sat Aug 03 15:05:50 2013 +0100
     1.2 +++ b/src/386_ops.h	Sat Aug 03 20:40:56 2013 +0100
     1.3 @@ -112,20 +112,13 @@
     1.4  {
     1.5          int opcode = fetchdat & 0xff;
     1.6          pc++;
     1.7 -        if (x86_opcodes_0f[opcode] == ILLEGAL && opcode != 0xff)
     1.8 -        {
     1.9 -                fatal("Illegal 0f instruction %02X w_a16\n", opcode);
    1.10 -        }
    1.11 +
    1.12          return x86_opcodes_0f[opcode](fetchdat >> 8);
    1.13  }
    1.14  static int op0F_l_a16(uint32_t fetchdat)
    1.15  {
    1.16          int opcode = fetchdat & 0xff;
    1.17          pc++;
    1.18 -        if (x86_opcodes_0f[opcode | 0x100] == ILLEGAL && opcode != 0xff)
    1.19 -        {
    1.20 -                fatal("Illegal 0f instruction %02X l_a16\n", opcode);
    1.21 -        }
    1.22          
    1.23          return x86_opcodes_0f[opcode | 0x100](fetchdat >> 8);
    1.24  }
    1.25 @@ -133,10 +126,6 @@
    1.26  {
    1.27          int opcode = fetchdat & 0xff;
    1.28          pc++;
    1.29 -        if (x86_opcodes_0f[opcode | 0x200] == ILLEGAL && opcode != 0xff)
    1.30 -        {
    1.31 -                fatal("Illegal 0f instruction %02X w_a32\n", opcode);
    1.32 -        }
    1.33          
    1.34          return x86_opcodes_0f[opcode | 0x200](fetchdat >> 8);
    1.35  }
    1.36 @@ -144,10 +133,6 @@
    1.37  {
    1.38          int opcode = fetchdat & 0xff;
    1.39          pc++;
    1.40 -        if (x86_opcodes_0f[opcode | 0x300] == ILLEGAL && opcode != 0xff)
    1.41 -        {
    1.42 -                fatal("Illegal 0f instruction %02X l_a32\n", opcode);
    1.43 -        }
    1.44          
    1.45          return x86_opcodes_0f[opcode | 0x300](fetchdat >> 8);
    1.46  }