From f6412d9c7b22ab25caec6be19317f0fc4a840fdd Mon Sep 17 00:00:00 2001 From: Spencer Oliver Date: Mon, 21 Dec 2009 16:33:03 +0000 Subject: [PATCH] MIPS: optimize pracc access remove unnecessary nops when accessing ejtag pracc general fastdata patch cleanup Signed-off-by: Spencer Oliver --- src/target/mips32_pracc.c | 122 ++++++++++++++------------------------ src/target/mips32_pracc.h | 1 - src/target/mips_ejtag.c | 12 +--- src/target/mips_m4k.c | 4 +- 4 files changed, 51 insertions(+), 88 deletions(-) diff --git a/src/target/mips32_pracc.c b/src/target/mips32_pracc.c index 34794f3383..4bd1da7d96 100644 --- a/src/target/mips32_pracc.c +++ b/src/target/mips32_pracc.c @@ -33,7 +33,6 @@ instruction after a branch instruction (one delay slot). For example: - LW $2, ($5 +10) B foo LW $1, ($2 +100) @@ -129,7 +128,7 @@ static int mips32_pracc_exec_read(struct mips32_pracc_context *ctx, uint32_t add data = ctx->local_oparam[offset]; } else if ((address >= MIPS32_PRACC_TEXT) - && (address <= MIPS32_PRACC_TEXT + ctx->code_len*4)) + && (address <= MIPS32_PRACC_TEXT + ctx->code_len * 4)) { offset = (address - MIPS32_PRACC_TEXT) / 4; data = ctx->code[offset]; @@ -145,7 +144,7 @@ static int mips32_pracc_exec_read(struct mips32_pracc_context *ctx, uint32_t add * to start of debug vector */ data = 0; - LOG_ERROR("Error reading unexpected address %8.8" PRIx32 "", address); + LOG_ERROR("Error reading unexpected address 0x%8.8" PRIx32 "", address); return ERROR_JTAG_DEVICE_ERROR; } @@ -154,7 +153,6 @@ static int mips32_pracc_exec_read(struct mips32_pracc_context *ctx, uint32_t add mips_ejtag_drscan_32(ctx->ejtag_info, &data); /* Clear the access pending bit (let the processor eat!) */ - ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC; mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_CONTROL, NULL); mips_ejtag_drscan_32(ctx->ejtag_info, &ejtag_ctrl); @@ -201,7 +199,7 @@ static int mips32_pracc_exec_write(struct mips32_pracc_context *ctx, uint32_t ad } else { - LOG_ERROR("Error writing unexpected address %8.8" PRIx32 "", address); + LOG_ERROR("Error writing unexpected address 0x%8.8" PRIx32 "", address); return ERROR_JTAG_DEVICE_ERROR; } @@ -234,8 +232,6 @@ int mips32_pracc_exec(struct mips_ejtag *ejtag_info, int code_len, const uint32_ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL); mips_ejtag_drscan_32(ejtag_info, &address); -// printf("Adres: %.8x\n", address); - /* Check for read or write */ if (ejtag_ctrl & EJTAG_CTRL_PRNW) { @@ -305,9 +301,8 @@ int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int co MIPS32_LW(10,4,8), /* $10 = mem[$8 + 4]; read count */ MIPS32_LUI(11,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */ MIPS32_ORI(11,11,LOWER16(MIPS32_PRACC_PARAM_OUT)), - MIPS32_NOP, /* loop: */ - MIPS32_BEQ(0,10,9), /* beq 0, $10, end */ + MIPS32_BEQ(0,10,8), /* beq 0, $10, end */ MIPS32_NOP, MIPS32_LW(8,0,9), /* lw $8,0($9), Load $8 with the word @mem[$9] */ @@ -317,8 +312,7 @@ int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int co MIPS32_ADDI(9,9,4), /* $1 += 4 */ MIPS32_ADDI(11,11,4), /* $11 += 4 */ - MIPS32_NOP, - MIPS32_B(NEG16(9)), /* b loop */ + MIPS32_B(NEG16(8)), /* b loop */ MIPS32_NOP, /* end: */ MIPS32_LW(11,0,15), /* lw $11,($15) */ @@ -326,8 +320,7 @@ int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int co MIPS32_LW(9,0,15), /* lw $9,($15) */ MIPS32_LW(8,0,15), /* lw $8,($15) */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(31)), /* b start */ + MIPS32_B(NEG16(28)), /* b start */ MIPS32_NOP, }; @@ -370,15 +363,14 @@ int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)), MIPS32_SW(8,0,15), /* sw $8,($15) */ - MIPS32_LW(8,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN), 15), //load R8 @ param_in[0] = address + MIPS32_LW(8,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN),15), /* load R8 @ param_in[0] = address */ MIPS32_LW(8,0,8), /* lw $8,0($8), Load $8 with the word @mem[$8] */ - MIPS32_SW(8,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_OUT),15), /* sw $8,0($9) */ + MIPS32_SW(8,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_OUT),15), /* store R8 @ param_out[0] */ MIPS32_LW(8,0,15), /* lw $8,($15) */ - MIPS32_B(NEG16(9)), //was 17 /* b start */ - MIPS32_MFC0(15,31,0), //this instruction will be executed (MIPS executes instruction after jump) /* move COP0 DeSave to $15 */ - MIPS32_NOP, + MIPS32_B(NEG16(9)), /* b start */ + MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ }; int retval = ERROR_OK; @@ -387,7 +379,7 @@ int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t param_in[0] = addr; if ((retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, - ARRAY_SIZE(param_in), param_in, sizeof(uint32_t), buf, 1)) != ERROR_OK) + ARRAY_SIZE(param_in), param_in, 1, buf, 1)) != ERROR_OK) { return retval; } @@ -413,9 +405,8 @@ int mips32_pracc_read_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int co MIPS32_LW(10,4,8), /* $10 = mem[$8 + 4]; read count */ MIPS32_LUI(11,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */ MIPS32_ORI(11,11,LOWER16(MIPS32_PRACC_PARAM_OUT)), - MIPS32_NOP, /* loop: */ - MIPS32_BEQ(0,10,9), /* beq 0, $10, end */ + MIPS32_BEQ(0,10,8), /* beq 0, $10, end */ MIPS32_NOP, MIPS32_LHU(8,0,9), /* lw $8,0($9), Load $8 with the halfword @mem[$9] */ @@ -424,21 +415,19 @@ int mips32_pracc_read_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int co MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */ MIPS32_ADDI(9,9,2), /* $9 += 2 */ MIPS32_ADDI(11,11,4), /* $11 += 4 */ + MIPS32_B(NEG16(8)), /* b loop */ MIPS32_NOP, - MIPS32_B(NEG16(9)), /* b loop */ - MIPS32_NOP, - + /* end: */ MIPS32_LW(11,0,15), /* lw $11,($15) */ MIPS32_LW(10,0,15), /* lw $10,($15) */ MIPS32_LW(9,0,15), /* lw $9,($15) */ MIPS32_LW(8,0,15), /* lw $8,($15) */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(31)), /* b start */ + MIPS32_B(NEG16(28)), /* b start */ MIPS32_NOP, }; -// /* TODO remove array */ + /* TODO remove array */ uint32_t *param_out = malloc(count * sizeof(uint32_t)); int i; @@ -494,9 +483,8 @@ int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int cou MIPS32_LW(10,4,8), /* $10 = mem[$8 + 4]; read count */ MIPS32_LUI(11,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */ MIPS32_ORI(11,11,LOWER16(MIPS32_PRACC_PARAM_OUT)), - MIPS32_NOP, /* loop: */ - MIPS32_BEQ(0,10,9), /* beq 0, $10, end */ + MIPS32_BEQ(0,10,8), /* beq 0, $10, end */ MIPS32_NOP, MIPS32_LBU(8,0,9), /* lw $8,0($9), Load t4 with the byte @mem[t1] */ @@ -505,8 +493,7 @@ int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int cou MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */ MIPS32_ADDI(9,9,1), /* $9 += 1 */ MIPS32_ADDI(11,11,4), /* $11 += 4 */ - MIPS32_NOP, - MIPS32_B(NEG16(9)), /* b loop */ + MIPS32_B(NEG16(8)), /* b loop */ MIPS32_NOP, /* end: */ MIPS32_LW(11,0,15), /* lw $11,($15) */ @@ -514,12 +501,11 @@ int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int cou MIPS32_LW(9,0,15), /* lw $9,($15) */ MIPS32_LW(8,0,15), /* lw $8,($15) */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(31)), /* b start */ + MIPS32_B(NEG16(28)), /* b start */ MIPS32_NOP, }; -// /* TODO remove array */ + /* TODO remove array */ uint32_t *param_out = malloc(count * sizeof(uint32_t)); int i; @@ -577,8 +563,6 @@ int mips32_pracc_write_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int siz int mips32_pracc_write_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint32_t *buf) { - -//NC: use destination pointer as loop counter (last address is in $10) static const uint32_t code[] = { /* start: */ MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */ @@ -589,32 +573,32 @@ int mips32_pracc_write_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int c MIPS32_SW(10,0,15), /* sw $10,($15) */ MIPS32_SW(11,0,15), /* sw $11,($15) */ - MIPS32_ADDI(8,15,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN)), //$8= MIPS32_PRACC_PARAM_IN + MIPS32_ADDI(8,15,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN)), /* $8= MIPS32_PRACC_PARAM_IN */ MIPS32_LW(9,0,8), /* Load write addr to $9 */ - MIPS32_LW(10,4,8), //last address /* Load write count to $10 */ - MIPS32_ADDI(8,8,8), // $8 += 8 beginning of data + MIPS32_LW(10,4,8), /* Load write count to $10 */ + MIPS32_ADDI(8,8,8), /* $8 += 8 beginning of data */ -//loop: + /* loop: */ MIPS32_LW(11,0,8), /* lw $11,0($8), Load $11 with the word @mem[$8] */ MIPS32_SW(11,0,9), /* sw $11,0($9) */ MIPS32_ADDI(9,9,4), /* $9 += 4 */ - MIPS32_BNE(10,9,NEG16(4)), //was 9 BNE $10, 9, loop /* b loop */ - MIPS32_ADDI(8,8,4), //this instruction is part of the loop (one delay slot)! /* $8 += 4 */ + MIPS32_BNE(10,9,NEG16(4)), /* bne $10, $9, loop */ + MIPS32_ADDI(8,8,4), /* $8 += 4 */ + /* end: */ MIPS32_LW(11,0,15), /* lw $11,($15) */ MIPS32_LW(10,0,15), /* lw $10,($15) */ MIPS32_LW(9,0,15), /* lw $9,($15) */ MIPS32_LW(8,0,15), /* lw $8,($15) */ - MIPS32_B(NEG16(21)), //was 30 /* b start */ + MIPS32_B(NEG16(21)), /* b start */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, //this one will not be executed }; /* TODO remove array */ uint32_t *param_in = malloc((count + 2) * sizeof(uint32_t)); param_in[0] = addr; - param_in[1] = addr + count * sizeof(uint32_t); //last address + param_in[1] = addr + (count * sizeof(uint32_t)); /* last address */ memcpy(¶m_in[2], buf, count * sizeof(uint32_t)); @@ -636,16 +620,15 @@ int mips32_pracc_write_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_ MIPS32_SW(8,0,15), /* sw $8,($15) */ MIPS32_SW(9,0,15), /* sw $9,($15) */ - MIPS32_LW(8,NEG16((MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN)-4), 15), //load R8 @ param_in[1] = data - MIPS32_LW(9,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN), 15), //load R9 @ param_in[0] = address + MIPS32_LW(8,NEG16((MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN)-4), 15), /* load R8 @ param_in[1] = data */ + MIPS32_LW(9,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN), 15), /* load R9 @ param_in[0] = address */ MIPS32_SW(8,0,9), /* sw $8,0($9) */ MIPS32_LW(9,0,15), /* lw $9,($15) */ MIPS32_LW(8,0,15), /* lw $8,($15) */ MIPS32_B(NEG16(11)), /* b start */ - MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, + MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ }; /* TODO remove array */ @@ -654,7 +637,7 @@ int mips32_pracc_write_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_ param_in[1] = *buf; mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ - ARRAY_SIZE(param_in),param_in, 0, NULL, 1); + ARRAY_SIZE(param_in), param_in, 0, NULL, 1); return ERROR_OK; } @@ -676,9 +659,8 @@ int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int c MIPS32_LW(9,0,8), /* Load write addr to $9 */ MIPS32_LW(10,4,8), /* Load write count to $10 */ MIPS32_ADDI(8,8,8), /* $8 += 8 */ - MIPS32_NOP, /* loop: */ - MIPS32_BEQ(0,10,9), /* beq $0, $10, end */ + MIPS32_BEQ(0,10,8), /* beq $0, $10, end */ MIPS32_NOP, MIPS32_LW(11,0,8), /* lw $11,0($8), Load $11 with the word @mem[$8] */ @@ -688,8 +670,7 @@ int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int c MIPS32_ADDI(9,9,2), /* $9 += 2 */ MIPS32_ADDI(8,8,4), /* $8 += 4 */ - MIPS32_NOP, - MIPS32_B(NEG16(9)), /* b loop */ + MIPS32_B(NEG16(8)), /* b loop */ MIPS32_NOP, /* end: */ MIPS32_LW(11,0,15), /* lw $11,($15) */ @@ -697,8 +678,7 @@ int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int c MIPS32_LW(9,0,15), /* lw $9,($15) */ MIPS32_LW(8,0,15), /* lw $8,($15) */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(30)), /* b start */ + MIPS32_B(NEG16(27)), /* b start */ MIPS32_NOP, }; @@ -738,9 +718,8 @@ int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int co MIPS32_LW(9,0,8), /* Load write addr to $9 */ MIPS32_LW(10,4,8), /* Load write count to $10 */ MIPS32_ADDI(8,8,8), /* $8 += 8 */ - MIPS32_NOP, /* loop: */ - MIPS32_BEQ(0,10,9), /* beq $0, $10, end */ + MIPS32_BEQ(0,10,8), /* beq $0, $10, end */ MIPS32_NOP, MIPS32_LW(11,0,8), /* lw $11,0($8), Load $11 with the word @mem[$8] */ @@ -750,8 +729,7 @@ int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int co MIPS32_ADDI(9,9,1), /* $9 += 1 */ MIPS32_ADDI(8,8,4), /* $8 += 4 */ - MIPS32_NOP, - MIPS32_B(NEG16(9)), /* b loop */ + MIPS32_B(NEG16(8)), /* b loop */ MIPS32_NOP, /* end: */ MIPS32_LW(11,0,15), /* lw $11,($15) */ @@ -759,8 +737,7 @@ int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int co MIPS32_LW(9,0,15), /* lw $9,($15) */ MIPS32_LW(8,0,15), /* lw $8,($15) */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(30)), /* b start */ + MIPS32_B(NEG16(27)), /* b start */ MIPS32_NOP, }; @@ -777,7 +754,7 @@ int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int co } retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ - count +2, param_in, 0, NULL, 1); + count + 2, param_in, 0, NULL, 1); free(param_in); @@ -843,15 +820,14 @@ int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs) MIPS32_LW(2,2*4,1), /* lw $2,2*4($1) */ MIPS32_LW(1,0,15), /* lw $1,($15) */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(55)), /* b start */ + MIPS32_B(NEG16(54)), /* b start */ MIPS32_NOP, }; int retval; retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ - 38, regs, 0, NULL, 1); + MIPS32NUMCOREREGS, regs, 0, NULL, 1); return retval; } @@ -920,15 +896,14 @@ int mips32_pracc_read_regs(struct mips_ejtag *ejtag_info, uint32_t *regs) MIPS32_LW(2,0,15), /* lw $2,($15) */ MIPS32_LW(1,0,15), /* lw $1,($15) */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(60)), /* b start */ + MIPS32_B(NEG16(59)), /* b start */ MIPS32_NOP, }; int retval; retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ - 0, NULL, 38, regs, 1); + 0, NULL, MIPS32NUMCOREREGS, regs, 1); return retval; } @@ -970,7 +945,6 @@ int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_are MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_TEXT)), MIPS32_JR(15), /* jr start */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, }; uint32_t jmp_code[] = { @@ -981,9 +955,6 @@ int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_are MIPS32_NOP, }; -#define JMP_CODE_SIZE (sizeof(jmp_code)/sizeof(jmp_code[0])) -#define HANDLER_CODE_SIZE sizeof(handler_code)/sizeof(handler_code[0]) - int retval, i; uint32_t val, ejtag_ctrl, address; @@ -1002,7 +973,7 @@ int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_are } /* write program into RAM */ - mips32_pracc_write_mem32(ejtag_info, source->address, HANDLER_CODE_SIZE, handler_code); + mips32_pracc_write_mem32(ejtag_info, source->address, ARRAY_SIZE(handler_code), handler_code); /* quick verify RAM is working */ mips32_pracc_read_u32(ejtag_info, source->address, &val); @@ -1017,7 +988,7 @@ int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_are jmp_code[1] |= UPPER16(source->address); jmp_code[2] |= LOWER16(source->address); - for (i = 0; i < (int) JMP_CODE_SIZE; i++) + for (i = 0; i < (int) ARRAY_SIZE(jmp_code); i++) { if ((retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl)) != ERROR_OK) return retval; @@ -1026,7 +997,6 @@ int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_are mips_ejtag_drscan_32(ejtag_info, &jmp_code[i]); /* Clear the access pending bit (let the processor eat!) */ - ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC; mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL); mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl); diff --git a/src/target/mips32_pracc.h b/src/target/mips32_pracc.h index 41a7325d91..a914686cc7 100644 --- a/src/target/mips32_pracc.h +++ b/src/target/mips32_pracc.h @@ -28,7 +28,6 @@ #define MIPS32_PRACC_FASTDATA_AREA 0xFF200000 #define MIPS32_PRACC_FASTDATA_SIZE 16 #define MIPS32_PRACC_TEXT 0xFF200200 -//#define MIPS32_PRACC_STACK 0xFF2FFFFC #define MIPS32_PRACC_STACK 0xFF204000 #define MIPS32_PRACC_PARAM_IN 0xFF201000 #define MIPS32_PRACC_PARAM_IN_SIZE 0x1000 diff --git a/src/target/mips_ejtag.c b/src/target/mips_ejtag.c index 6f7baf017a..bebad9ace3 100644 --- a/src/target/mips_ejtag.c +++ b/src/target/mips_ejtag.c @@ -139,10 +139,8 @@ int mips_ejtag_step_enable(struct mips_ejtag *ejtag_info) MIPS32_MFC0(1,23,0), /* move COP0 Debug to $1 */ MIPS32_ORI(1,1,0x0100), /* set SSt bit in debug reg */ MIPS32_MTC0(1,23,0), /* move $1 to COP0 Debug */ + MIPS32_B(NEG16(5)), MIPS32_MFC0(1,31,0), /* move COP0 DeSave to $1 */ - MIPS32_NOP, - MIPS32_B(NEG16(7)), - MIPS32_NOP, }; mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ @@ -165,10 +163,8 @@ int mips_ejtag_step_disable(struct mips_ejtag *ejtag_info) MIPS32_MTC0(1,23,0), /* move $1 to COP0 Debug */ MIPS32_LW(2,0,15), MIPS32_LW(1,0,15), + MIPS32_B(NEG16(13)), MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(15)), - MIPS32_NOP, }; mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ @@ -230,10 +226,8 @@ int mips_ejtag_read_debug(struct mips_ejtag *ejtag_info, uint32_t* debug_reg) MIPS32_SW(2,0,1), MIPS32_LW(2,0,15), MIPS32_LW(1,0,15), + MIPS32_B(NEG16(12)), MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ - MIPS32_NOP, - MIPS32_B(NEG16(14)), - MIPS32_NOP, }; mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ diff --git a/src/target/mips_m4k.c b/src/target/mips_m4k.c index f3191ae603..4adc1f193c 100644 --- a/src/target/mips_m4k.c +++ b/src/target/mips_m4k.c @@ -993,14 +993,14 @@ int mips_m4k_bulk_write_memory(struct target *target, uint32_t address, uint32_t if (target->endianness == TARGET_BIG_ENDIAN) { uint32_t i, t32; - for(i = 0; i < (count*4); i+=4) + for(i = 0; i < (count * 4); i += 4) { t32 = be_to_h_u32((uint8_t *) &buffer[i]); h_u32_to_le(&buffer[i], t32); } } - retval = mips32_pracc_fastdata_xfer(ejtag_info, source, write, address, count, (uint32_t *) buffer); + retval = mips32_pracc_fastdata_xfer(ejtag_info, source, write, address, count, (uint32_t*) buffer); if (source) target_free_working_area(target, source); -- 2.30.2