SH7785 datasheet(149/1692 Pages) RENESAS

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SH7785 Datasheet(PDF) 149 Page - Renesas Technology Corp

Part #	SH7785

Description	32-Bit RISC Microcomputer

PDF	1692 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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149 / 1692 page

5. Exception Handling

Rev.1.00 Jan. 10, 2008 Page 119 of 1658

REJ09B0261-0100

(14) FPU Exception

• Source: Exception due to execution of a floating-point operation

• Transition address: VBR + H'00000100

• Transition operations:

The PC and SR contents for the instruction at which this exception occurred are saved in SPC

and SSR . The R15 contents at this time are saved in SGR. Exception code H'120 is set in

EXPEVT. The BL, MD, and RB bits are set to 1 in SR, and a branch is made to PC = VBR +

H'0100.

FPU_exception()

{

SPC = PC;

SSR = SR;

SGR = R15;

EXPEVT = H'0000 0120;

SR.MD = 1;

SR.RB = 1;

SR.BL = 1;

PC = VBR + H'0000 0100;

}

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