multiprecision.hh File Reference

Multi-precision integers. More...

#include "error.hh"

Include dependency graph for multiprecision.hh:

Functions
void	ghidra::leftshift128 (uint8 *in, uint8 *out, int4 sa)
	128-bit INT_LEFT operation with constant shift amount
bool	ghidra::uless128 (uint8 *in1, uint8 *in2)
	128-bit INT_LESS operation
bool	ghidra::ulessequal128 (uint8 *in1, uint8 *in2)
	128-bit INT_LESSEQUAL operation
void	ghidra::udiv128 (uint8 *numer, uint8 *denom, uint8 *quotient_res, uint8 *remainder_res)
	128-bit INT_DIV
void	ghidra::add128 (uint8 *in1, uint8 *in2, uint8 *out)
	128-bit INT_ADD operation
void	ghidra::subtract128 (uint8 *in1, uint8 *in2, uint8 *out)
	128-bit INT_SUB operation
void	ghidra::set_u128 (uint8 *res, uint8 val)
	Set a 128-bit value (2 64-bit words) from a 64-bit value.

Detailed Description

Multi-precision integers.

Function Documentation

add128()

void ghidra::add128	(	uint8 *	in1,
		uint8 *	in2,
		uint8 *	out
	)

128-bit INT_ADD operation

Parameters

in1	is the first 128-bit value (as 2 64-bit words) to add
in2	is the second 128-bit value to add
out	will hold the 128-bit result

leftshift128()

void ghidra::leftshift128	(	uint8 *	in,
		uint8 *	out,
		int4	sa
	)

128-bit INT_LEFT operation with constant shift amount

Parameters

in	is the 128-bit input (as 2 64-bit words)
out	will hold the 128-bit result
sa	is the number of bits to shift

set_u128()

void ghidra::set_u128 ( uint8 *  res, uint8  val  )

inline

Set a 128-bit value (2 64-bit words) from a 64-bit value.

Parameters

res	will hold the 128-bit value
val	is the 64-bit value to set from

References ghidra::set_u128().

Referenced by ghidra::RuleDivTermAdd::applyOp(), ghidra::RuleDivTermAdd2::applyOp(), ghidra::RuleDivOpt::calcDivisor(), and ghidra::set_u128().

subtract128()

void ghidra::subtract128	(	uint8 *	in1,
		uint8 *	in2,
		uint8 *	out
	)

128-bit INT_SUB operation

Parameters

in1	is the first 128-bit value (as 2 64-bit words)
in2	is the second 128-bit value to subtract
out	will hold the 128-bit result

udiv128()

void ghidra::udiv128	(	uint8 *	numer,
		uint8 *	denom,
		uint8 *	quotient_res,
		uint8 *	remainder_res
	)

128-bit INT_DIV

Parameters

numer	holds the 2 64-bit words of the numerator
denom	holds the 2 words of the denominator
quotient_res	will hold the 2 words of the quotient
remainder_res	will hold the 2 words of the remainder

uless128()

bool ghidra::uless128	(	uint8 *	in1,
		uint8 *	in2
	)

128-bit INT_LESS operation

Parameters

in1	is the first 128-bit value (as 2 64-bit words) to compare
in2	is the second 128-bit value

Returns

true if the first value is less than the second value

ulessequal128()

bool ghidra::ulessequal128	(	uint8 *	in1,
		uint8 *	in2
	)

128-bit INT_LESSEQUAL operation

Parameters

in1	is the first 128-bit value (as 2 64-bit words) to compare
in2	is the second 128-bit value

Returns

true if the first value is less than or equal to the second value