[1/4] winedbg: Add preload operators for Thumb2 disassembler
André Hentschel
nerv at dawncrow.de
Sun Oct 7 10:33:03 CDT 2012
---
programs/winedbg/be_arm.c | 34 ++++++++++++++++++++++++++++++++++
1 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/programs/winedbg/be_arm.c b/programs/winedbg/be_arm.c
index bad74d0..a3c5243 100644
--- a/programs/winedbg/be_arm.c
+++ b/programs/winedbg/be_arm.c
@@ -959,6 +959,39 @@ static UINT thumb2_disasm_ldrword(UINT inst, ADDRESS64 *addr)
return 0;
}
+static UINT thumb2_disasm_preload(UINT inst, ADDRESS64 *addr)
+{
+ WORD op1 = (inst >> 23) & 0x03;
+
+ if (!(op1 & 0x01) && !((inst >> 6) & 0x3f) && get_nibble(inst, 4) != 15)
+ {
+ WORD shift = (inst >> 4) & 0x03;
+ dbg_printf("\n\t%s\t[%s, %s", op1?"pli":"pld", tbl_regs[get_nibble(inst, 4)],
+ tbl_regs[get_nibble(inst, 0)]);
+ if (shift) dbg_printf(", lsl #%u]", shift);
+ else dbg_printf("]");
+ return 0;
+ }
+
+ if (get_nibble(inst, 4) != 15)
+ {
+ dbg_printf("\n\t%s\t[%s, #%d]", (op1 & 0x02)?"pli":"pld", tbl_regs[get_nibble(inst, 4)],
+ (op1 & 0x01)?(inst & 0x0fff):(-1 * (inst & 0xff)));
+ return 0;
+ }
+
+ if (get_nibble(inst, 4) == 15)
+ {
+ int offset = inst & 0x0fff;
+ if (!op1) offset *= -1;
+ dbg_printf("\n\t%s\t", (op1 & 0x02)?"pli":"pld");
+ db_printsym(addr->Offset + offset + 4);
+ return 0;
+ }
+
+ return inst;
+}
+
static UINT thumb2_disasm_coprocdat(UINT inst, ADDRESS64 *addr)
{
WORD opc2 = (inst >> 5) & 0x07;
@@ -1105,6 +1138,7 @@ static const struct inst_arm tbl_thumb32[] = {
{ 0xff8000f0, 0xfb8000f0, thumb2_disasm_longmuldiv },
{ 0xff100000, 0xf8000000, thumb2_disasm_str },
{ 0xff700000, 0xf8500000, thumb2_disasm_ldrword },
+ { 0xfe70f000, 0xf810f000, thumb2_disasm_preload },
{ 0xef000010, 0xee000000, thumb2_disasm_coprocdat },
{ 0xef000010, 0xee000010, thumb2_disasm_coprocmov1 },
{ 0xefe00000, 0xec400000, thumb2_disasm_coprocmov2 },
--
1.7.4.1
--
Best Regards, André Hentschel
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