From 2d6829d6982fa485b8cabb3a91e41b9c50c7f3d1 Mon Sep 17 00:00:00 2001 From: =?utf8?q?=C3=98yvind=20Harboe?= Date: Sun, 22 Nov 2009 20:18:26 +0100 Subject: [PATCH] mips: use const for code sequences MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 --- src/target/mips32_pracc.c | 24 ++++++++++++------------ src/target/mips32_pracc.h | 2 +- 2 files changed, 13 insertions(+), 13 deletions(-) diff --git a/src/target/mips32_pracc.c b/src/target/mips32_pracc.c index abc4a6f5..3177e0f2 100644 --- a/src/target/mips32_pracc.c +++ b/src/target/mips32_pracc.c @@ -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 */ diff --git a/src/target/mips32_pracc.h b/src/target/mips32_pracc.h index 3b124c78..5d1cf3dd 100644 --- a/src/target/mips32_pracc.h +++ b/src/target/mips32_pracc.h @@ -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); -- 2.39.5