diff options
| author | Matthias Welwarsky <matthias.welwarsky@sysgo.com> | 2016-10-20 17:22:26 +0200 |
|---|---|---|
| committer | Matthias Welwarsky <matthias.welwarsky@sysgo.com> | 2017-02-10 14:18:35 +0100 |
| commit | 9d2e8aabb82ad440e14fd03d4007122c076eecb4 (patch) | |
| tree | d8bc6b3b48f758c4be8185e2a2134dd5ccae1346 /src/target/armv8_dpm.c | |
| parent | 91663206635022bfcb30b92e8462a773c225a77a (diff) | |
| download | riscv-openocd-9d2e8aabb82ad440e14fd03d4007122c076eecb4.zip riscv-openocd-9d2e8aabb82ad440e14fd03d4007122c076eecb4.tar.gz riscv-openocd-9d2e8aabb82ad440e14fd03d4007122c076eecb4.tar.bz2 | |
aarch64: use cached value of dscr register where needed
Instead of supplying a local, preinitialized "dscr" variable, use the
cached value from arm_dpm, which is kept up-to-date anyway.
Change-Id: I06d548d4dc6db68b9d984c83ed026fa9069d7875
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Diffstat (limited to 'src/target/armv8_dpm.c')
| -rw-r--r-- | src/target/armv8_dpm.c | 46 |
1 files changed, 21 insertions, 25 deletions
diff --git a/src/target/armv8_dpm.c b/src/target/armv8_dpm.c index 0188753..b4c14c2 100644 --- a/src/target/armv8_dpm.c +++ b/src/target/armv8_dpm.c @@ -82,7 +82,8 @@ static int dpmv8_write_dcc_64(struct armv8_common *armv8, uint64_t data) LOG_DEBUG("write DCC 0x%016" PRIx64, data); ret = mem_ap_write_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_DTRRX, data); - ret += mem_ap_write_u32(armv8->debug_ap, + if (ret == ERROR_OK) + ret = mem_ap_write_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_DTRTX, data >> 32); return ret; } @@ -174,7 +175,7 @@ static int dpmv8_dpm_prepare(struct arm_dpm *dpm) uint32_t dscr; int retval; - /* set up invariant: INSTR_COMP is set after ever DPM operation */ + /* set up invariant: ITE is set after ever DPM operation */ long long then = timeval_ms(); for (;; ) { retval = mem_ap_read_atomic_u32(armv8->debug_ap, @@ -216,7 +217,7 @@ static int dpmv8_exec_opcode(struct arm_dpm *dpm, uint32_t opcode, uint32_t *p_dscr) { struct armv8_common *armv8 = dpm->arm->arch_info; - uint32_t dscr = DSCR_ITE; + uint32_t dscr = dpm->dscr; int retval; LOG_DEBUG("exec opcode 0x%08" PRIx32, opcode); @@ -333,19 +334,18 @@ static int dpmv8_instr_write_data_r0_64(struct arm_dpm *dpm, uint32_t opcode, uint64_t data) { struct armv8_common *armv8 = dpm->arm->arch_info; - uint32_t dscr = DSCR_ITE; int retval; + /* transfer data from DCC to R0 */ retval = dpmv8_write_dcc_64(armv8, data); - if (retval != ERROR_OK) - return retval; - - retval = dpmv8_exec_opcode(dpm, ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), &dscr); - if (retval != ERROR_OK) - return retval; + if (retval == ERROR_OK) + retval = dpmv8_exec_opcode(dpm, ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), &dpm->dscr); /* then the opcode, taking data from R0 */ - return dpmv8_exec_opcode(dpm, opcode, &dscr); + if (retval == ERROR_OK) + retval = dpmv8_exec_opcode(dpm, opcode, &dpm->dscr); + + return retval; } static int dpmv8_instr_cpsr_sync(struct arm_dpm *dpm) @@ -364,70 +364,66 @@ static int dpmv8_instr_read_data_dcc(struct arm_dpm *dpm, uint32_t opcode, uint32_t *data) { struct armv8_common *armv8 = dpm->arm->arch_info; - uint32_t dscr = DSCR_ITE; int retval; /* the opcode, writing data to DCC */ - retval = dpmv8_exec_opcode(dpm, opcode, &dscr); + retval = dpmv8_exec_opcode(dpm, opcode, &dpm->dscr); if (retval != ERROR_OK) return retval; - return dpmv8_read_dcc(armv8, data, &dscr); + return dpmv8_read_dcc(armv8, data, &dpm->dscr); } static int dpmv8_instr_read_data_dcc_64(struct arm_dpm *dpm, uint32_t opcode, uint64_t *data) { struct armv8_common *armv8 = dpm->arm->arch_info; - uint32_t dscr = DSCR_ITE; int retval; /* the opcode, writing data to DCC */ - retval = dpmv8_exec_opcode(dpm, opcode, &dscr); + retval = dpmv8_exec_opcode(dpm, opcode, &dpm->dscr); if (retval != ERROR_OK) return retval; - return dpmv8_read_dcc_64(armv8, data, &dscr); + return dpmv8_read_dcc_64(armv8, data, &dpm->dscr); } static int dpmv8_instr_read_data_r0(struct arm_dpm *dpm, uint32_t opcode, uint32_t *data) { struct armv8_common *armv8 = dpm->arm->arch_info; - uint32_t dscr = DSCR_ITE; int retval; /* the opcode, writing data to R0 */ - retval = dpmv8_exec_opcode(dpm, opcode, &dscr); + retval = dpmv8_exec_opcode(dpm, opcode, &dpm->dscr); if (retval != ERROR_OK) return retval; /* write R0 to DCC */ - retval = dpmv8_exec_opcode(dpm, armv8_opcode(armv8, WRITE_REG_DTRTX), &dscr); + retval = dpmv8_exec_opcode(dpm, armv8_opcode(armv8, WRITE_REG_DTRTX), &dpm->dscr); if (retval != ERROR_OK) return retval; - return dpmv8_read_dcc(armv8, data, &dscr); + return dpmv8_read_dcc(armv8, data, &dpm->dscr); } static int dpmv8_instr_read_data_r0_64(struct arm_dpm *dpm, uint32_t opcode, uint64_t *data) { struct armv8_common *armv8 = dpm->arm->arch_info; - uint32_t dscr = DSCR_ITE; int retval; /* the opcode, writing data to R0 */ - retval = dpmv8_exec_opcode(dpm, opcode, &dscr); + retval = dpmv8_exec_opcode(dpm, opcode, &dpm->dscr); if (retval != ERROR_OK) return retval; /* write R0 to DCC */ - retval = dpmv8_exec_opcode(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0, 0), &dscr); + retval = dpmv8_exec_opcode(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0, 0), &dpm->dscr); if (retval != ERROR_OK) return retval; - return dpmv8_read_dcc_64(armv8, data, &dscr); + return dpmv8_read_dcc_64(armv8, data, &dpm->dscr); } #if 0 |