Renesas M32R-FPU, Software Manual

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3
3-61 M32R-FPU Software Manual (Rev.1.01)
LD LD
load/store instruction
Load
[Mnemonic]
(1) LD Rdest,@Rsrc
(2) LD Rdest,@Rsrc+
(3) LD Rdest,@(disp16,Rsrc)
[Function]
Load to register from the contents of the memory.
(1) Rdest = *( int *) Rsrc;
(2) Rdest = *( int *) Rsrc, Rsrc += 4;
(3) Rdest = *( int *) ( Rsrc + ( signed short ) disp16 );
[Description]
(1) The contents of the memory at the address specified by Rsrc are loaded into Rdest.
(2) The contents of the memory at the address specified by Rsrc are loaded into Rdest.
Rsrc is post incremented by 4.
(3) The contents of the memory at the address specified by Rsrc combined with the 16-
bit displacement are loaded into Rdest.
The displacement value is sign-extended to 32 bits before the address calculation.
The condition bit (C) is unchanged.
[EIT occurrence]
Address exception (AE)
[Encoding]
dest 0010 LD Rdest,@Rsrc
dest 1010
dest 0010 LD Rdest,@Rsrc+
LD Rdest,@(disp16,Rsrc)
1100 src
1110 src
1100 src
disp16
INSTRUCTIONS
3.2 Instruction description