derek.holloway
7502bf64a4
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57 lines
967 B
ArmAsm
57 lines
967 B
ArmAsm
# Blackfin testcase for the CEC (handling exceptions from usermode)
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# mach: bfin
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# sim: --environment operating
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.include "testutils.inc"
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start
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.ifndef BFIN_HOST
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// load address of exception handler
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imm32 p0, 0xFFE02000; /* EVT0 */
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R0 = exception_handler (Z);
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R0.H = exception_handler;
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[ P0 + (4*3) ] = R0;
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// Jump to User mode and enable exceptions
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R0 = UserCode (Z);
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R0.H = UserCode;
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RETI = R0;
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RTI;
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UserCode:
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R4 = 0xec39 (Z);
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R0 = 0xcafe (Z);
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L3 = 0xf41f (Z);
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L3.H = 0x1ce9;
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I3 = 0xfe10 (Z);
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I3.H = 0x20a9;
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B3 = 0x4552 (Z);
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B3.H = 0x15f0;
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// should except - r4 dep
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// R4 = R4 >> 25 || W [ I3 ++ ] = R0.H || R4 = [ I3 ];
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.Lskip_start:
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.rep 8
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.byte 0xff
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.endr
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dbg_fail;
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.Lskip_end:
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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dbg_pass;
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exception_handler:
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// just skip over excepting instructions
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R0 = RETX;
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R1.L = .Lskip_start;
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R1.H = .Lskip_start;
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R2.L = .Lskip_end;
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R2.H = .Lskip_end;
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R2 = R2 - R1;
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R0 = R0 + R2;
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RETX = R0;
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RTX;
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.endif
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