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cortex_m: add armv8m special registers

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Change-Id: I1942f375a5f4282ad1fe4a2ff3b8f3cbc64d8f7f
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-on: http://openocd.zylin.com/6016
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
This commit is contained in:
Tarek BOCHKATI
2021-01-12 20:11:11 +01:00
committed by Tomas Vanek
parent aa952a1b77
commit 5d9de1c400
3 changed files with 91 additions and 13 deletions
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57
src/target/armv7m.c
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@@ -125,6 +125,29 @@ static const struct {
{ ARMV7M_FAULTMASK, "faultmask", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV7M_CONTROL, "control", 3, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
/* ARMv8-M specific registers */
{ ARMV8M_MSP_NS, "msp_ns", 32, REG_TYPE_DATA_PTR, "stack", "v8-m.sp" },
{ ARMV8M_PSP_NS, "psp_ns", 32, REG_TYPE_DATA_PTR, "stack", "v8-m.sp" },
{ ARMV8M_MSP_S, "msp_s", 32, REG_TYPE_DATA_PTR, "stack", "v8-m.sp" },
{ ARMV8M_PSP_S, "psp_s", 32, REG_TYPE_DATA_PTR, "stack", "v8-m.sp" },
{ ARMV8M_MSPLIM_S, "msplim_s", 32, REG_TYPE_DATA_PTR, "stack", "v8-m.sp" },
{ ARMV8M_PSPLIM_S, "psplim_s", 32, REG_TYPE_DATA_PTR, "stack", "v8-m.sp" },
{ ARMV8M_MSPLIM_NS, "msplim_ns", 32, REG_TYPE_DATA_PTR, "stack", "v8-m.sp" },
{ ARMV8M_PSPLIM_NS, "psplim_ns", 32, REG_TYPE_DATA_PTR, "stack", "v8-m.sp" },
{ ARMV8M_PMSK_BPRI_FLTMSK_CTRL_S, "pmsk_bpri_fltmsk_ctrl_s", 32, REG_TYPE_INT, NULL, NULL },
{ ARMV8M_PRIMASK_S, "primask_s", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV8M_BASEPRI_S, "basepri_s", 8, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV8M_FAULTMASK_S, "faultmask_s", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV8M_CONTROL_S, "control_s", 3, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV8M_PMSK_BPRI_FLTMSK_CTRL_NS, "pmsk_bpri_fltmsk_ctrl_ns", 32, REG_TYPE_INT, NULL, NULL },
{ ARMV8M_PRIMASK_NS, "primask_ns", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV8M_BASEPRI_NS, "basepri_ns", 8, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV8M_FAULTMASK_NS, "faultmask_ns", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV8M_CONTROL_NS, "control_ns", 3, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
/* FPU registers */
{ ARMV7M_D0, "d0", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
{ ARMV7M_D1, "d1", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
{ ARMV7M_D2, "d2", 64, REG_TYPE_IEEE_DOUBLE, "float", "org.gnu.gdb.arm.vfp" },
@@ -243,6 +266,15 @@ static uint32_t armv7m_map_id_to_regsel(unsigned int arm_reg_id)
case ARMV7M_PMSK_BPRI_FLTMSK_CTRL:
return ARMV7M_REGSEL_PMSK_BPRI_FLTMSK_CTRL;
case ARMV8M_MSP_NS...ARMV8M_PSPLIM_NS:
return arm_reg_id - ARMV8M_MSP_NS + ARMV8M_REGSEL_MSP_NS;
case ARMV8M_PMSK_BPRI_FLTMSK_CTRL_S:
return ARMV8M_REGSEL_PMSK_BPRI_FLTMSK_CTRL_S;
case ARMV8M_PMSK_BPRI_FLTMSK_CTRL_NS:
return ARMV8M_REGSEL_PMSK_BPRI_FLTMSK_CTRL_NS;
case ARMV7M_FPSCR:
return ARMV7M_REGSEL_FPSCR;
@@ -258,28 +290,26 @@ static uint32_t armv7m_map_id_to_regsel(unsigned int arm_reg_id)
static bool armv7m_map_reg_packing(unsigned int arm_reg_id,
unsigned int *reg32_id, uint32_t *offset)
{
switch (arm_reg_id) {
case ARMV7M_PRIMASK:
case ARMV7M_PRIMASK...ARMV7M_CONTROL:
*reg32_id = ARMV7M_PMSK_BPRI_FLTMSK_CTRL;
*offset = 0;
*offset = arm_reg_id - ARMV7M_PRIMASK;
return true;
case ARMV7M_BASEPRI:
*reg32_id = ARMV7M_PMSK_BPRI_FLTMSK_CTRL;
*offset = 1;
case ARMV8M_PRIMASK_S...ARMV8M_CONTROL_S:
*reg32_id = ARMV8M_PMSK_BPRI_FLTMSK_CTRL_S;
*offset = arm_reg_id - ARMV8M_PRIMASK_S;
return true;
case ARMV7M_FAULTMASK:
*reg32_id = ARMV7M_PMSK_BPRI_FLTMSK_CTRL;
*offset = 2;
return true;
case ARMV7M_CONTROL:
*reg32_id = ARMV7M_PMSK_BPRI_FLTMSK_CTRL;
*offset = 3;
case ARMV8M_PRIMASK_NS...ARMV8M_CONTROL_NS:
*reg32_id = ARMV8M_PMSK_BPRI_FLTMSK_CTRL_NS;
*offset = arm_reg_id - ARMV8M_PRIMASK_NS;
return true;
default:
return false;
}
}
static int armv7m_read_core_reg(struct target *target, struct reg *r,
@@ -743,7 +773,8 @@ struct reg_cache *armv7m_build_reg_cache(struct target *target)
reg_list[i].value = arch_info[i].value;
reg_list[i].dirty = false;
reg_list[i].valid = false;
reg_list[i].hidden = i == ARMV7M_PMSK_BPRI_FLTMSK_CTRL;
reg_list[i].hidden = (i == ARMV7M_PMSK_BPRI_FLTMSK_CTRL ||
i == ARMV8M_PMSK_BPRI_FLTMSK_CTRL_NS || i == ARMV8M_PMSK_BPRI_FLTMSK_CTRL_S);
reg_list[i].type = &armv7m_reg_type;
reg_list[i].arch_info = &arch_info[i];