=?UTF-8?Q?Andr=C3=A9=20Hentschel=20?=: winedbg: Add load/store dual/ exclusive and table branch operators to Thumb2 disassembler.
Alexandre Julliard
julliard at winehq.org
Mon Dec 10 14:00:39 CST 2012
Module: wine
Branch: master
Commit: 785bdb6412dcabbfd38b7292e173bb5f4306a501
URL: http://source.winehq.org/git/wine.git/?a=commit;h=785bdb6412dcabbfd38b7292e173bb5f4306a501
Author: André Hentschel <nerv at dawncrow.de>
Date: Mon Dec 10 15:16:29 2012 +0100
winedbg: Add load/store dual/exclusive and table branch operators to Thumb2 disassembler.
---
programs/winedbg/be_arm.c | 68 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 68 insertions(+), 0 deletions(-)
diff --git a/programs/winedbg/be_arm.c b/programs/winedbg/be_arm.c
index c3963c4..a6f57f7 100644
--- a/programs/winedbg/be_arm.c
+++ b/programs/winedbg/be_arm.c
@@ -1147,6 +1147,73 @@ static UINT thumb2_disasm_ldrstrmul(UINT inst, ADDRESS64 *addr)
return 0;
}
+static UINT thumb2_disasm_ldrstrextbr(UINT inst, ADDRESS64 *addr)
+{
+ WORD op1 = (inst >> 23) & 0x03;
+ WORD op2 = (inst >> 20) & 0x03;
+ WORD op3 = (inst >> 4) & 0x0f;
+ WORD indexing = (inst >> 24) & 0x01;
+ WORD direction = (inst >> 23) & 0x01;
+ WORD writeback = (inst >> 21) & 0x01;
+ WORD load = (inst >> 20) & 0x01;
+ short offset = (inst & 0xff) << 2;
+
+ if (op1 == 1 && op2 == 1 && op3 < 2)
+ {
+ WORD halfword = (inst >> 4) & 0x01;
+ if (halfword)
+ dbg_printf("\n\ttbh\t [%s, %s, lsl #1]", tbl_regs[get_nibble(inst, 4)],
+ tbl_regs[get_nibble(inst, 0)]);
+ else
+ dbg_printf("\n\ttbb\t [%s, %s]", tbl_regs[get_nibble(inst, 4)],
+ tbl_regs[get_nibble(inst, 0)]);
+ return 0;
+ }
+
+ if (op1 == 0 && op2 < 2)
+ {
+ if (get_nibble(inst, 2) == 15)
+ dbg_printf("\n\tldrex\t %s, [%s, #%u]", tbl_regs[get_nibble(inst, 3)],
+ tbl_regs[get_nibble(inst, 4)], offset);
+ else
+ dbg_printf("\n\tstrex\t %s, %s, [%s, #%u]", tbl_regs[get_nibble(inst, 2)],
+ tbl_regs[get_nibble(inst, 3)], tbl_regs[get_nibble(inst, 4)], offset);
+ return 0;
+ }
+
+ if (op1 == 1 && op2 < 2)
+ {
+ WORD halfword = (inst >> 4) & 0x01;
+ if (get_nibble(inst, 0) == 15)
+ dbg_printf("\n\tldrex%s\t %s, [%s]", halfword ? "h" : "b",
+ tbl_regs[get_nibble(inst, 3)], tbl_regs[get_nibble(inst, 4)]);
+ else
+ dbg_printf("\n\tstrex%s\t %s, %s, [%s]", halfword ? "h" : "b",
+ tbl_regs[get_nibble(inst, 0)], tbl_regs[get_nibble(inst, 3)],
+ tbl_regs[get_nibble(inst, 4)]);
+ return 0;
+ }
+
+ if (!direction) offset *= -1;
+ dbg_printf("\n\t%s\t", load ? "ldrd" : "strd");
+ if (indexing)
+ {
+ if (load && get_nibble(inst, 4) == 15)
+ {
+ dbg_printf("%s, %s, ", tbl_regs[get_nibble(inst, 3)], tbl_regs[get_nibble(inst, 2)]);
+ db_printsym(addr->Offset + offset + 4);
+ }
+ else
+ dbg_printf("%s, %s, [%s, #%d]%s", tbl_regs[get_nibble(inst, 3)],
+ tbl_regs[get_nibble(inst, 2)], tbl_regs[get_nibble(inst, 4)], offset,
+ writeback?"!":"");
+ }
+ else
+ dbg_printf("%s, %s, [%s], #%d", tbl_regs[get_nibble(inst, 3)],
+ tbl_regs[get_nibble(inst, 2)], tbl_regs[get_nibble(inst, 4)], offset);
+ return 0;
+}
+
struct inst_arm
{
UINT mask;
@@ -1226,6 +1293,7 @@ static const struct inst_arm tbl_thumb32[] = {
{ 0xefe00000, 0xec400000, thumb2_disasm_coprocmov2 },
{ 0xee000000, 0xec000000, thumb2_disasm_coprocdatatrans },
{ 0xfe402000, 0xe8000000, thumb2_disasm_ldrstrmul },
+ { 0xfe400000, 0xe8400000, thumb2_disasm_ldrstrextbr },
{ 0x00000000, 0x00000000, NULL }
};
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