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mips: use const for code sequences

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This will allow data to be allocated in read only
memory instead of on the stack. Speeds things up
and reduces stack usage.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
This commit is contained in:
Øyvind Harboe 2009-11-22 20:18:26 +01:00
parent 5985dee35d
commit 2d6829d698
2 changed files with 13 additions and 13 deletions
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24
src/target/mips32_pracc.c
View File

@ -83,7 +83,7 @@ struct mips32_pracc_context
int num_iparam;
uint32_t *local_oparam;
int num_oparam;
uint32_t *code;
const uint32_t *code;
int code_len;
uint32_t stack[32];
int stack_offset;
@ -208,7 +208,7 @@ static int mips32_pracc_exec_write(struct mips32_pracc_context *ctx, uint32_t ad
return ERROR_OK;
}
int mips32_pracc_exec(struct mips_ejtag *ejtag_info, int code_len, uint32_t *code, int num_param_in, uint32_t *param_in, int num_param_out, uint32_t *param_out, int cycle)
int mips32_pracc_exec(struct mips_ejtag *ejtag_info, int code_len, const uint32_t *code, int num_param_in, uint32_t *param_in, int num_param_out, uint32_t *param_out, int cycle)
{
uint32_t ejtag_ctrl;
uint32_t address, data;
@ -290,7 +290,7 @@ int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size
int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint32_t *buf)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
@ -364,7 +364,7 @@ int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int co
int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t *buf)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
@ -398,7 +398,7 @@ int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t
int mips32_pracc_read_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint16_t *buf)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
@ -477,7 +477,7 @@ int mips32_pracc_read_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int co
int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint8_t *buf)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
@ -576,7 +576,7 @@ int mips32_pracc_write_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int c
{
//NC: use destination pointer as loop counter (last address is in $10)
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
@ -623,7 +623,7 @@ int mips32_pracc_write_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int c
int mips32_pracc_write_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t *buf)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
@ -656,7 +656,7 @@ int mips32_pracc_write_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_
int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint16_t *buf)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
@ -716,7 +716,7 @@ int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int c
int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint8_t *buf)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
@ -777,7 +777,7 @@ int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int co
int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_LUI(2,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $2 = MIPS32_PRACC_PARAM_IN */
MIPS32_ORI(2,2,LOWER16(MIPS32_PRACC_PARAM_IN)),
@ -849,7 +849,7 @@ int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
int mips32_pracc_read_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
{
uint32_t code[] = {
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(2,31,0), /* move $2 to COP0 DeSave */
MIPS32_LUI(2,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $2 = MIPS32_PRACC_PARAM_OUT */

2
src/target/mips32_pracc.h
View File

@ -63,7 +63,7 @@ int mips32_pracc_write_u32(struct mips_ejtag *ejtag_info,
int mips32_pracc_read_regs(struct mips_ejtag *ejtag_info, uint32_t *regs);
int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs);
int mips32_pracc_exec(struct mips_ejtag *ejtag_info, int code_len, uint32_t *code,
int mips32_pracc_exec(struct mips_ejtag *ejtag_info, int code_len, const uint32_t *code,
int num_param_in, uint32_t *param_in,
int num_param_out, uint32_t *param_out, int cycle);