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Commit 51eec48e authored by Leonid Yegoshin's avatar Leonid Yegoshin Committed by Markos Chandras
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MIPS: mm: uasm: Add signed 9-bit immediate related macros 



MIPS R6 redefines several instructions and reduces the immediate
field to 9-bits so add related macros for the microassembler.

Signed-off-by: default avatarLeonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
parent 7fd08ca5

arch/mips/mm/uasm.c

+12 −1
Original line number Diff line number Diff line
@@ -24,7 +24,8 @@ enum fields { 
	JIMM = 0x080,

	FUNC = 0x100,

	SET = 0x200,

	SCIMM = 0x400

	SCIMM = 0x400,

	SIMM9 = 0x800,

};



#define OP_MASK		0x3f
@@ -41,6 +42,8 @@ enum fields { 
#define FUNC_SH		0

#define SET_MASK	0x7

#define SET_SH		0

#define SIMM9_SH	7

#define SIMM9_MASK	0x1ff



enum opcode {

	insn_invalid,
@@ -116,6 +119,14 @@ static inline u32 build_scimm(u32 arg) 
	return (arg & SCIMM_MASK) << SCIMM_SH;

}



static inline u32 build_scimm9(s32 arg)

{

	WARN((arg > 0xff || arg < -0x100),

	       KERN_WARNING "Micro-assembler field overflow\n");



	return (arg & SIMM9_MASK) << SIMM9_SH;

}



static inline u32 build_func(u32 arg)

{

	WARN(arg & ~FUNC_MASK, KERN_WARNING "Micro-assembler field overflow\n");