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winedump: Rewrite dumping of packed ARM unwind info.
This differs slightly from the official docs (which is clear in some places, vague in others, and contradictory in some places), based on actual observed behaviour. Signed-off-by: Martin Storsjö <martin@martin.st> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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ae7979a42d
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@ -787,7 +787,7 @@ static void dump_armnt_unwind_info( const struct runtime_function_armnt *fnc )
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if (fnc->u.s.Flag)
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{
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char intregs[32] = {0}, intregspop[32] = {0}, vfpregs[32] = {0};
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WORD pf = 0, ef = 0, sc = 0;
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WORD pf = 0, ef = 0, fpoffset = 0, stack = fnc->u.s.StackAdjust;
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printf( "\nFunction %08x-%08x:\n", fnc->BeginAddress & ~1,
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(fnc->BeginAddress & ~1) + fnc->u.s.FunctionLength * 2 );
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@ -805,86 +805,60 @@ static void dump_armnt_unwind_info( const struct runtime_function_armnt *fnc )
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{
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pf = fnc->u.s.StackAdjust & 0x04;
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ef = fnc->u.s.StackAdjust & 0x08;
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stack = (fnc->u.s.StackAdjust & 3) + 1;
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}
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if (!fnc->u.s.R && !pf)
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if (!fnc->u.s.R || pf)
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{
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if (fnc->u.s.Reg)
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int first = 4, last = fnc->u.s.Reg + 4;
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if (pf)
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{
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sprintf(intregs, "r4-r%u", fnc->u.s.Reg + 4);
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sprintf(intregspop, "r4-r%u", fnc->u.s.Reg + 4);
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first = (~fnc->u.s.StackAdjust) & 3;
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if (fnc->u.s.R)
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last = 3;
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}
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if (first == last)
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sprintf(intregs, "r%u", first);
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else
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{
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strcpy(intregs, "r4");
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strcpy(intregspop, "r4");
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}
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sc = fnc->u.s.Reg + 1;
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if (fnc->u.s.C || fnc->u.s.L)
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{
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strcat(intregs, ", ");
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if (fnc->u.s.C || (fnc->u.s.L && !fnc->u.s.H))
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strcat(intregspop, ", ");
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}
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}
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else if (fnc->u.s.R && pf)
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{
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if (((~fnc->u.s.StackAdjust) & 3) != 3)
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{
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sprintf(intregs, "r%u-r3", (~fnc->u.s.StackAdjust) & 3);
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sprintf(intregspop, "r%u-r3", (~fnc->u.s.StackAdjust) & 3);
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}
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else
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{
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sprintf(intregs, "r3");
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sprintf(intregspop, "r3");
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}
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sc = 4 - ((~fnc->u.s.StackAdjust) & 3);
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if (fnc->u.s.C || fnc->u.s.L)
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{
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strcat(intregs, ", ");
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if (fnc->u.s.C || (fnc->u.s.L && !fnc->u.s.H))
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strcat(intregspop, ", ");
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}
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}
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else if (!fnc->u.s.R && pf)
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{
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sprintf(intregs, "r%u-r%u", (~fnc->u.s.StackAdjust) & 3, fnc->u.s.Reg + 4);
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sprintf(intregspop, "r%u-r%u", (~fnc->u.s.StackAdjust) & 3, fnc->u.s.Reg + 4);
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sc = fnc->u.s.Reg + 5 - ((~fnc->u.s.StackAdjust) & 3);
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if (fnc->u.s.C || fnc->u.s.L)
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{
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strcat(intregs, ", ");
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if (fnc->u.s.C || (fnc->u.s.L && !fnc->u.s.H))
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strcat(intregspop, ", ");
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}
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}
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else if (fnc->u.s.R && !pf)
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{
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if (!fnc->u.s.C && !fnc->u.s.L)
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{
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strcpy(intregs, "none");
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strcpy(intregspop, "none");
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}
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sprintf(intregs, "r%u-r%u", first, last);
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fpoffset = last + 1 - first;
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}
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if (fnc->u.s.C && !fnc->u.s.L)
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if (!fnc->u.s.R || ef)
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{
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int first = 4, last = fnc->u.s.Reg + 4;
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if (ef)
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{
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first = (~fnc->u.s.StackAdjust) & 3;
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if (fnc->u.s.R)
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last = 3;
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}
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if (first == last)
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sprintf(intregspop, "r%u", first);
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else
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sprintf(intregspop, "r%u-r%u", first, last);
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}
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if (fnc->u.s.C)
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{
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if (intregs[0])
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strcat(intregs, ", ");
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if (intregspop[0])
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strcat(intregspop, ", ");
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strcat(intregs, "r11");
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strcat(intregspop, "r11");
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}
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else if (fnc->u.s.C && fnc->u.s.L)
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{
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strcat(intregs, "r11, lr");
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if (fnc->u.s.H)
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strcat(intregspop, "r11");
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else
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strcat(intregspop, "r11, pc");
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}
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else if (!fnc->u.s.C && fnc->u.s.L)
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if (fnc->u.s.L)
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{
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if (intregs[0])
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strcat(intregs, ", ");
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strcat(intregs, "lr");
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if (!fnc->u.s.H)
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if (intregspop[0] && (fnc->u.s.Ret != 0 || !fnc->u.s.H))
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strcat(intregspop, ", ");
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if (fnc->u.s.Ret != 0)
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strcat(intregspop, "lr");
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else if (!fnc->u.s.H)
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strcat(intregspop, "pc");
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}
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@ -895,46 +869,42 @@ static void dump_armnt_unwind_info( const struct runtime_function_armnt *fnc )
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else
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strcpy(vfpregs, "d8");
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}
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else
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strcpy(vfpregs, "none");
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if (fnc->u.s.H)
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printf( " Unwind Code\tpush {r0-r3}\n" );
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if (fnc->u.s.Flag == 1) {
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if (fnc->u.s.H)
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printf( " Unwind Code\tpush {r0-r3}\n" );
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if (fnc->u.s.R || fnc->u.s.L || fnc->u.s.C || pf)
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printf( " Unwind Code\tpush {%s}\n", intregs );
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if (intregs[0])
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printf( " Unwind Code\tpush {%s}\n", intregs );
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if (fnc->u.s.C && fnc->u.s.R && !fnc->u.s.L && !pf)
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printf( " Unwind Code\tmov r11, sp\n" );
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else if (fnc->u.s.C && (!fnc->u.s.R || fnc->u.s.L || pf))
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{
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if (fnc->u.s.StackAdjust >= 0x03f4 && !sc)
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printf( " Unwind Code\tadd r11, sp, #<unknown>\n");
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else if (fnc->u.s.StackAdjust >= 0x03f4)
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printf( " Unwind Code\tadd r11, sp, #%d\n", sc * 4 );
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else
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printf( " Unwind Code\tadd r11, sp, #%d\n", fnc->u.s.StackAdjust * 4 );
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if (fnc->u.s.C && fpoffset == 0)
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printf( " Unwind Code\tmov r11, sp\n" );
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else if (fnc->u.s.C)
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printf( " Unwind Code\tadd r11, sp, #%d\n", fpoffset * 4 );
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if (fnc->u.s.R && fnc->u.s.Reg != 0x07)
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printf( " Unwind Code\tvpush {%s}\n", vfpregs );
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if (stack && !pf)
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printf( " Unwind Code\tsub sp, sp, #%d\n", stack * 4 );
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}
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if (fnc->u.s.R && fnc->u.s.Reg != 0x07)
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printf( " Unwind Code\tvpush {%s}\n", vfpregs );
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if (fnc->u.s.Ret == 3)
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return;
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printf( "Epilogue:\n" );
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if (fnc->u.s.StackAdjust < 0x03f4 && !pf)
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printf( " Unwind Code\tsub sp, sp, #%d\n", fnc->u.s.StackAdjust * 4 );
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if (fnc->u.s.StackAdjust < 0x03f4 && !ef)
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printf( " Unwind Code\tadd sp, sp, #%d\n", fnc->u.s.StackAdjust * 4 );
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if (stack && !ef)
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printf( " Unwind Code\tadd sp, sp, #%d\n", stack * 4 );
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if (fnc->u.s.R && fnc->u.s.Reg != 0x07)
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printf( " Unwind Code\tvpop {%s}\n", vfpregs );
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if (fnc->u.s.C || !fnc->u.s.R || ef || (fnc->u.s.L && !fnc->u.s.H))
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if (intregspop[0])
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printf( " Unwind Code\tpop {%s}\n", intregspop );
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if (fnc->u.s.H && !fnc->u.s.L)
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if (fnc->u.s.H && !(fnc->u.s.L && fnc->u.s.Ret == 0))
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printf( " Unwind Code\tadd sp, sp, #16\n" );
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else if (fnc->u.s.H && fnc->u.s.L)
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else if (fnc->u.s.H && (fnc->u.s.L && fnc->u.s.Ret == 0))
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printf( " Unwind Code\tldr pc, [sp], #20\n" );
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if (fnc->u.s.Ret == 1)
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