Registers

Data Structures
struct	cpu_registers
	Represent the register configuration. More...

Macros
#define	CPU_SR_T_BIT_MASK   0x00000001
	CPU sr register T bit that indicates carry/borrow or overflow/underflow.
#define	CPU_SR_S_BIT_MASK   0x00000002
	CPU sr register S bit is used by the multiply/accumulate instructions.
#define	CPU_SR_I_BITS_MASK   0x000000F0
	CPU sr register I bits are used for the interrupt mask bits.
#define	CPU_SR_Q_BIT_MASK   0x00000100
	CPU sr register Q bit used by div0u, divu0s, and div1 instructions.
#define	CPU_SR_M_BIT_MASK   0x00000200
	CPU sr register M bit used by divu0, divu0s, and div1 instructions.

Typedefs
typedef struct cpu_registers	cpu_registers_t
	Represent the register configuration.

Functions
static void	cpu_reg_gbr_set (uint32_t reg_gbr)
	Set the gbr register.
static uint32_t	cpu_reg_gbr_get (void)
	Obtain the 32-bit value of the gbr register.
static void	cpu_reg_vbr_set (uint32_t reg_vbr)
	Set the vbr register.
static uint32_t	cpu_reg_vbr_get (void)
	Obtain the 32-bit value of the vbr register.
static void	cpu_reg_mach_set (uint32_t reg_mach)
	Set the mach register.
static uint32_t	cpu_reg_mach_get (void)
	Obtain the 32-bit value of the mach register.
static void	cpu_reg_macl_set (uint32_t reg_macl)
	Set the macl register.
static uint32_t	cpu_reg_macl_get (void)
	Obtain the 32-bit value of the macl register.
static void	cpu_reg_pr_set (uint32_t reg_pr)
	Set the pr register.
static uint32_t	cpu_reg_pr_get (void)
	Obtain the 32-bit value of the pr register.
static void	cpu_reg_sr_set (uint32_t reg_sr)
	Set the sr register.
static uint32_t	cpu_reg_sr_get (void)
	Obtain the 32-bit value of the sr register.
static uint32_t	cpu_reg_fp_get (void)
	Obtain the 32-bit value of the fp (or r14) register.
static uint32_t	cpu_reg_sp_get (void)
	Obtain the 32-bit value of the sp register.

Detailed Description

Description goes here.

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Data Structure Documentation

cpu_registers

struct cpu_registers

Represent the register configuration.

Data Fields
uint32_t	sp	sp register (or r15).
uint32_t	r[15]	Registers r0..r14.
uint32_t	macl	macl register.
uint32_t	mach	mach register.
uint32_t	vbr	vbr register.
uint32_t	gbr	gbr register.
uint32_t	pr	pr register.
uint32_t	pc	pc register.
uint32_t	sr	sr register.

Function Documentation

cpu_reg_gbr_set()

static void cpu_reg_gbr_set ( uint32_t  reg_gbr )

inlinestatic

Set the gbr register.

The appropriate gbr value will be set depending on which CPU you're executing this inlined function on.

Warning

Yaul may use this register at some point in the future.

Parameters

reg_gbr

The 32-bit value.

cpu_reg_gbr_get()

static uint32_t cpu_reg_gbr_get ( void  )

inlinestatic

Obtain the 32-bit value of the gbr register.

The appropriate gbr value will be returned depending on which CPU you're executing this inlined function on.

Returns

The 32-bit value of the gbr register.

cpu_reg_vbr_set()

static void cpu_reg_vbr_set ( uint32_t  reg_vbr )

inlinestatic

Set the vbr register.

The vbr register defaults to 0x0600000 for the master CPU, and 0x06000400 for the slave CPU.

The appropriate vbr value will be set depending on which CPU you're executing this inlined function on.

Parameters

reg_vbr

The 32-bit value.

cpu_reg_vbr_get()

static uint32_t cpu_reg_vbr_get ( void  )

inlinestatic

Obtain the 32-bit value of the vbr register.

The appropriate vbr value will be returned depending on which CPU you're executing this inlined function on.

Returns

The 32-bit value of the vbr register.

cpu_reg_mach_set()

static void cpu_reg_mach_set ( uint32_t  reg_mach )

inlinestatic

Set the mach register.

The appropriate mach value will be set depending on which CPU you're executing this inlined function on.

Parameters

reg_mach

The 32-bit value.

cpu_reg_mach_get()

static uint32_t cpu_reg_mach_get ( void  )

inlinestatic

Obtain the 32-bit value of the mach register.

The appropriate mach value will be returned depending on which CPU you're executing this inlined function on.

Returns

The 32-bit value of the mach register.

cpu_reg_macl_set()

static void cpu_reg_macl_set ( uint32_t  reg_macl )

inlinestatic

Set the macl register.

The appropriate macl value will be set depending on which CPU you're executing this inlined function on.

Parameters

reg_macl

The 32-bit value.

cpu_reg_macl_get()

static uint32_t cpu_reg_macl_get ( void  )

inlinestatic

Obtain the 32-bit value of the macl register.

The appropriate macl value will be returned depending on which CPU you're executing this inlined function on.

Returns

The 32-bit value of the macl register.

cpu_reg_pr_set()

static void cpu_reg_pr_set ( uint32_t  reg_pr )

inlinestatic

Set the pr register.

The appropriate pr value will be set depending on which CPU you're executing this inlined function on.

Parameters

reg_pr

The 32-bit value.

cpu_reg_pr_get()

static uint32_t cpu_reg_pr_get ( void  )

inlinestatic

Obtain the 32-bit value of the pr register.

The appropriate pr value will be returned depending on which CPU you're executing this inlined function on.

Returns

The 32-bit value of the pr register.

cpu_reg_sr_set()

static void cpu_reg_sr_set ( uint32_t  reg_sr )

inlinestatic

Set the sr register.

The appropriate sr value will be set depending on which CPU you're executing this inlined function on.

Parameters

reg_sr

The 32-bit value.

cpu_reg_sr_get()

static uint32_t cpu_reg_sr_get ( void  )

inlinestatic

Obtain the 32-bit value of the sr register.

The appropriate sr value will be returned depending on which CPU you're executing this inlined function on.

Returns

The 32-bit value of the sr register.

cpu_reg_fp_get()

static uint32_t cpu_reg_fp_get ( void  )

inlinestatic

Obtain the 32-bit value of the fp (or r14) register.

The appropriate fp (or r14) value will be returned depending on which CPU you're executing this inlined function on.

Note

Yaul passes -fomit-frame-pointer to GCC, so the the frame pointer is not being tracked.

Returns

The 32-bit value of the fp (or r14) register.

cpu_reg_sp_get()

static uint32_t cpu_reg_sp_get ( void  )

inlinestatic

Obtain the 32-bit value of the sp register.

The appropriate sp value will be returned depending on which CPU you're executing this inlined function on.

Returns

The 32-bit value of the sp register.