cppis2.hpp File Reference

Additional Instructions Set 2 IS[2]: 8 new instructions is2_* and 1 instruction modified is2_add. More...

#include "cpprisc16.hpp"

Include dependency graph for cppis2.hpp:

Go to the source code of this file.

Namespaces
	cpprisc16

Macros
#define	is2_add_bo(result, a, b, label)
	(Add Branch if Overflow) R[result] <– R[a] + R[b] and if overflow then jump to label. More...
#define	is2_bl(a, b, label)
	(Branch if Lower) If R[a] < R[b] then jump to label. More...
#define	is2_sha_bo(result, a, b, label)
	(SHift Arithmetic) R[result] <– (R[a] << R[b]) or (R[a] >> -R[b]) More...
#define	is2_shl_bo(result, a, b, label)
	(SHift Logic if Overflow) R[result] <– (R[a] << R[b]) or (R[a] >> -R[b]) More...
#define	is2_sub_bo(result, a, b, label)
	(Sub Branch if Overflow) R[result] <– R[a] - R[b] and if overflow then jump to label. More...

Functions
bool	cpprisc16::is2_add (unsigned int result, unsigned int a, unsigned int b)
	R[result] <– R[a] + R[b]. More...
void	cpprisc16::is2_mul (unsigned int result, unsigned int a, unsigned int b)
	R[result - 1]:R[result] <– R[a]*R[b]. More...
void	cpprisc16::is2_nor (unsigned int result, unsigned int a, unsigned int b)
	R[result] <– R[a] NOR R[b] (== ~(a | b)) More...
bool	cpprisc16::is2_sha (unsigned int result, unsigned int a, unsigned int b)
	(SHift Arithmetic) R[result] <– (R[a] << R[b]) or (R[a] >> -R[b]) More...
void	cpprisc16::is2_shifti (unsigned int result, unsigned int a, immed_t immed7)
	(Shift Immediate) R[result] <– (R[a] << immed5) or (R[a] >> -immed5) More...
bool	cpprisc16::is2_shl (unsigned int result, unsigned int a, unsigned int b)
	(SHift Logic) R[result] <– (R[a] << R[b]) or (R[a] >> -R[b]) More...
bool	cpprisc16::is2_sub (unsigned int result, unsigned int a, unsigned int b)
	R[result] <– R[a] - R[b]. More...
void	cpprisc16::is2_xor (unsigned int result, unsigned int a, unsigned int b)
	R[result] <– R[a] XOR R[b] (== ~(a ^ b)) More...

Detailed Description

Additional Instructions Set 2 IS[2]: 8 new instructions is2_* and 1 instruction modified is2_add.

(March 15, 2017) Piece of cpprisc16. https://bitbucket.org/OPiMedia/cpprisc16

GPLv3 — Copyright (C) 2017 Olivier Pirson http://www.opimedia.be/

Definition in file cppis2.hpp.

Macro Definition Documentation

is2_add_bo

#define is2_add_bo	(		result,
			a,
			b,
			label
	)

Value:

{       \
    assert(a < cpprisc16::nb_registers);        \
    assert(b < cpprisc16::nb_registers);        \
                                                \
    if (is2_add(result, a, b)) { goto label; }  \
  }

(Add Branch if Overflow) R[result] <– R[a] + R[b] and if overflow then jump to label.

Count for 1 instruction.

Definition at line 31 of file cppis2.hpp.

is2_bl

#define is2_bl	(		a,
			b,
			label
	)

Value:

{                                           \
    assert(a < cpprisc16::nb_registers);                                \
    assert(b < cpprisc16::nb_registers);                                \
                                                                        \
    ++cpprisc16::nb_executed;                                           \
    if (cpprisc16::registers[a] < cpprisc16::registers[b]) { goto label; } \
  }

(Branch if Lower) If R[a] < R[b] then jump to label.

Count for 1 instruction.

Definition at line 45 of file cppis2.hpp.

is2_sha_bo

#define is2_sha_bo	(		result,
			a,
			b,
			label
	)

Value:

{       \
    assert(a < cpprisc16::nb_registers);        \
    assert(b < cpprisc16::nb_registers);        \
                                                \
    if (is2_sha(result, a, b)) { goto label; }  \
  }

(SHift Arithmetic) R[result] <– (R[a] << R[b]) or (R[a] >> -R[b])

If R[b] >= 0 then shift to the left, else shift to the right with duplication of the sign bit.

And if overflow then jump to label.

Count for 1 instruction.

Returns

true iff overflow

Definition at line 68 of file cppis2.hpp.

is2_shl_bo

#define is2_shl_bo	(		result,
			a,
			b,
			label
	)

Value:

{       \
    assert(a < cpprisc16::nb_registers);        \
    assert(b < cpprisc16::nb_registers);        \
                                                \
    if (is2_shl(result, a, b)) { goto label; }  \
  }

(SHift Logic if Overflow) R[result] <– (R[a] << R[b]) or (R[a] >> -R[b])

If R[b] >= 0 then shift to the left, else shift to the right.

And if overflow then jump to label.

Count for 1 instruction.

Definition at line 88 of file cppis2.hpp.

is2_sub_bo

#define is2_sub_bo	(		result,
			a,
			b,
			label
	)

Value:

{       \
    assert(a < cpprisc16::nb_registers);        \
    assert(b < cpprisc16::nb_registers);        \
                                                \
    if (is2_sub(result, a, b)) { goto label; }  \
  }

(Sub Branch if Overflow) R[result] <– R[a] - R[b] and if overflow then jump to label.

Count for 1 instruction.

Definition at line 103 of file cppis2.hpp.