=?UTF-8?Q?Andr=C3=A9=20Hentschel=20?=: winedbg: Disassemble more Thumb instructions.
Alexandre Julliard
julliard at winehq.org
Thu Apr 19 13:27:51 CDT 2012
Module: wine
Branch: master
Commit: 11384aa5ad43df8a8bb3c1b42f3e89dd14231e9f
URL: http://source.winehq.org/git/wine.git/?a=commit;h=11384aa5ad43df8a8bb3c1b42f3e89dd14231e9f
Author: André Hentschel <nerv at dawncrow.de>
Date: Wed Apr 18 23:05:27 2012 +0200
winedbg: Disassemble more Thumb instructions.
---
programs/winedbg/be_arm.c | 63 ++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 62 insertions(+), 1 deletions(-)
diff --git a/programs/winedbg/be_arm.c b/programs/winedbg/be_arm.c
index 670fd8a..db7931d 100644
--- a/programs/winedbg/be_arm.c
+++ b/programs/winedbg/be_arm.c
@@ -70,6 +70,11 @@ static char const tbl_hiops_t[][4] = {
"add", "cmp", "mov", "bx"
};
+static char const tbl_aluops_t[][4] = {
+ "and", "eor", "lsl", "lsr", "asr", "adc", "sbc", "ror", "tst", "neg", "cmp", "cmn", "orr",
+ "mul", "bic", "mvn"
+};
+
static char const tbl_immops_t[][4] = {
"mov", "cmp", "add", "sub"
};
@@ -335,6 +340,17 @@ static WORD thumb_disasm_hireg(WORD inst, ADDRESS64 *addr)
return 0;
}
+static WORD thumb_disasm_aluop(WORD inst, ADDRESS64 *addr)
+{
+ short dst = inst & 0x07;
+ short src = (inst >> 3) & 0x07;
+ short op = (inst >> 6) & 0x0f;
+
+ dbg_printf("\n\t%s\t%s, %s", tbl_aluops_t[op], tbl_regs[dst], tbl_regs[src]);
+
+ return 0;
+}
+
static WORD thumb_disasm_blocktrans(WORD inst, ADDRESS64 *addr)
{
short lrpc = (inst >> 8) & 0x01;
@@ -371,7 +387,14 @@ static WORD thumb_disasm_longbl(WORD inst, ADDRESS64 *addr)
if (!((inst2 & 0xf800) == 0xf800)) return inst;
offset += (inst2 & 0x07ff) << 1;
- dbg_printf("\tbl\t%08x", offset);
+ dbg_printf("\n\tbl\t%08x", offset);
+ return 0;
+}
+
+static WORD thumb_disasm_condbranch(WORD inst, ADDRESS64 *addr)
+{
+ WORD offset = inst & 0x00ff;
+ dbg_printf("\n\tb%s\t%04x", tbl_cond[(inst >> 8) & 0x0f], offset);
return 0;
}
@@ -402,6 +425,16 @@ static WORD thumb_disasm_ldrsprel(WORD inst, ADDRESS64 *addr)
return 0;
}
+static WORD thumb_disasm_addsprel(WORD inst, ADDRESS64 *addr)
+{
+ WORD offset = (inst & 0x7f) << 2;
+ if ((inst >> 7) & 0x01)
+ dbg_printf("\n\tsub\tsp, sp, #%u", offset);
+ else
+ dbg_printf("\n\tadd\tsp, sp, #%u", offset);
+ return 0;
+}
+
static WORD thumb_disasm_ldrimm(WORD inst, ADDRESS64 *addr)
{
WORD offset = (inst & 0x07c0) >> 6;
@@ -417,6 +450,28 @@ static WORD thumb_disasm_immop(WORD inst, ADDRESS64 *addr)
return 0;
}
+static WORD thumb_disasm_addsub(WORD inst, ADDRESS64 *addr)
+{
+ WORD op = (inst >> 9) & 0x01;
+ WORD immediate = (inst >> 10) & 0x01;
+
+ dbg_printf("\n\t%s\t%s, %s, ", op ? "sub" : "add",
+ tbl_regs[inst & 0x07], tbl_regs[(inst >> 3) & 0x07]);
+ if (immediate)
+ dbg_printf("#%d", (inst >> 6) & 0x07);
+ else
+ dbg_printf("%s", tbl_regs[(inst >> 6) & 0x07]);
+ return 0;
+}
+
+static WORD thumb_disasm_movshift(WORD inst, ADDRESS64 *addr)
+{
+ WORD op = (inst >> 11) & 0x03;
+ dbg_printf("\n\t%s\t%s, %s, #%u", tbl_shifts[op],
+ tbl_regs[inst & 0x07], tbl_regs[(inst >> 3) & 0x07], (inst >> 6) & 0x1f);
+ return 0;
+}
+
struct inst_arm
{
UINT mask;
@@ -447,14 +502,20 @@ struct inst_thumb16
static const struct inst_thumb16 tbl_thumb16[] = {
{ 0xfc00, 0x4400, thumb_disasm_hireg },
+ { 0xfc00, 0x4000, thumb_disasm_aluop },
{ 0xf600, 0xb400, thumb_disasm_blocktrans },
{ 0xf800, 0xf000, thumb_disasm_longbl },
+ { 0xf000, 0xd000, thumb_disasm_condbranch },
{ 0xf800, 0x4800, thumb_disasm_ldrpcrel },
{ 0xf000, 0x9000, thumb_disasm_ldrsprel },
+ { 0xff00, 0xb000, thumb_disasm_addsprel },
{ 0xe000, 0x6000, thumb_disasm_ldrimm },
{ 0xe000, 0x2000, thumb_disasm_immop },
+ { 0xf000, 0xd000, thumb_disasm_condbranch },
{ 0xff00, 0xdf00, thumb_disasm_swi },
{ 0xff00, 0xbf00, thumb_disasm_nop },
+ { 0xfc00, 0x1c00, thumb_disasm_addsub },
+ { 0xe000, 0x0000, thumb_disasm_movshift },
{ 0x0000, 0x0000, NULL }
};
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