69 lines
1.7 KiB
Plaintext
69 lines
1.7 KiB
Plaintext
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Patch name: Disassmble relative jumps correctly
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Author: Dirk Thierbach
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Date: 4/30/2003
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Status: new
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Detailed description:
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Patch was created with:
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cvs diff -u
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Apply patch to what version:
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cvs checked out on DATE, release version VER
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Instructions:
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To patch, go to main bochs directory.
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Type "patch -p0 < THIS_PATCH_FILE".
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----------------------------------------------------------------------
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--- dis_groups.cc.ORIG 2003-01-21 14:23:47.000000000 +0100
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+++ dis_groups.cc 2003-04-30 12:46:36.000000000 +0200
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@@ -418,12 +418,12 @@
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{
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if (db_32bit_opsize) {
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Bit32s imm32;
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- imm32 = fetch_dword();
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+ imm32 = (Bit32s) fetch_dword();
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dis_sprintf("%08x", (unsigned) (imm32 + db_eip));
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}
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else {
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Bit16s imm16;
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- imm16 = fetch_word();
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+ imm16 = (Bit16s) fetch_word();
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dis_sprintf("%04x", (unsigned) ((imm16 + db_eip) & 0xFFFF));
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}
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}
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@@ -522,17 +522,17 @@
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{
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#if BX_CPU_LEVEL > 2
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if (db_32bit_opsize) {
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- Bit32u imm32;
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+ Bit32s imm32; /* JMP rel32 is signed */
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- imm32 = fetch_dword();
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+ imm32 = (Bit32s) fetch_dword();
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dis_sprintf("%08x", (unsigned) (imm32 + db_eip));
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}
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else
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#endif
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{
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- Bit16u imm16;
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+ Bit16s imm16; /* JMP rel16 is signed */
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- imm16 = fetch_word();
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+ imm16 = (Bit16s) fetch_word();
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dis_sprintf("%04x", (unsigned) ((imm16 + db_eip) & 0xFFFF));
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}
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}
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@@ -591,9 +591,9 @@
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void
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bx_disassemble_c::Jb(void)
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{
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- Bit8u imm8;
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+ Bit8s imm8; /* JMP rel8 is signed */
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- imm8 = fetch_byte();
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+ imm8 = (Bit8s) fetch_byte();
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#if BX_CPU_LEVEL > 2
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if (db_32bit_opsize) {
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dis_sprintf("%08x", (unsigned) (imm8 + db_eip));
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