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armv7m: add gdb target description support 

Change-Id: I7c01109c0b85d208fb04a7ae1185fab4b2ab96b8
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1620
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
This commit is contained in:
Spencer Oliver 2013-09-13 09:44:36 +01:00 committed by Andreas Fritiofson
parent f90e911026
commit 1255b18fc6
1 changed files with 54 additions and 43 deletions
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97
src/target/armv7m.c
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@ -81,35 +81,35 @@ static const struct {
unsigned id; unsigned id;
const char *name; const char *name;
unsigned bits; unsigned bits;
enum reg_type type;
const char *group;
const char *feature;
} armv7m_regs[] = { } armv7m_regs[] = {
{ ARMV7M_R0, "r0", 32 }, { ARMV7M_R0, "r0", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R1, "r1", 32 }, { ARMV7M_R1, "r1", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R2, "r2", 32 }, { ARMV7M_R2, "r2", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R3, "r3", 32 }, { ARMV7M_R3, "r3", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R4, "r4", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R5, "r5", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R6, "r6", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R7, "r7", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R8, "r8", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R9, "r9", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R10, "r10", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R11, "r11", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R12, "r12", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R13, "sp", 32, REG_TYPE_DATA_PTR, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R14, "lr", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_PC, "pc", 32, REG_TYPE_CODE_PTR, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_xPSR, "xPSR", 32, REG_TYPE_INT, "general", "org.gnu.gdb.arm.m-profile" },
{ ARMV7M_R4, "r4", 32 }, { ARMV7M_MSP, "msp", 32, REG_TYPE_DATA_PTR, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV7M_R5, "r5", 32 }, { ARMV7M_PSP, "psp", 32, REG_TYPE_DATA_PTR, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV7M_R6, "r6", 32 },
{ ARMV7M_R7, "r7", 32 },
{ ARMV7M_R8, "r8", 32 }, { ARMV7M_PRIMASK, "primask", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV7M_R9, "r9", 32 }, { ARMV7M_BASEPRI, "basepri", 8, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV7M_R10, "r10", 32 }, { ARMV7M_FAULTMASK, "faultmask", 1, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV7M_R11, "r11", 32 }, { ARMV7M_CONTROL, "control", 2, REG_TYPE_INT8, "system", "org.gnu.gdb.arm.m-system" },
{ ARMV7M_R12, "r12", 32 },
{ ARMV7M_R13, "sp", 32 },
{ ARMV7M_R14, "lr", 32 },
{ ARMV7M_PC, "pc", 32 },
{ ARMV7M_xPSR, "xPSR", 32 },
{ ARMV7M_MSP, "msp", 32 },
{ ARMV7M_PSP, "psp", 32 },
{ ARMV7M_PRIMASK, "primask", 1 },
{ ARMV7M_BASEPRI, "basepri", 8 },
{ ARMV7M_FAULTMASK, "faultmask", 1 },
{ ARMV7M_CONTROL, "control", 2 },
}; };
#define ARMV7M_NUM_REGS ARRAY_SIZE(armv7m_regs) #define ARMV7M_NUM_REGS ARRAY_SIZE(armv7m_regs)
@ -242,9 +242,6 @@ static int armv7m_write_core_reg(struct target *target, struct reg *r,
/** /**
* Returns generic ARM userspace registers to GDB. * Returns generic ARM userspace registers to GDB.
* GDB doesn't quite understand that most ARMs don't have floating point
* hardware, so this also fakes a set of long-obsolete FPA registers that
* are not used in EABI based software stacks.
*/ */
int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[],
int *reg_list_size, enum target_register_class reg_class) int *reg_list_size, enum target_register_class reg_class)
@ -252,24 +249,18 @@ int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[],
struct armv7m_common *armv7m = target_to_armv7m(target); struct armv7m_common *armv7m = target_to_armv7m(target);
int i; int i;
*reg_list_size = 26; if (reg_class == REG_CLASS_ALL)
*reg_list_size = ARMV7M_NUM_REGS;
else
*reg_list_size = 17;
*reg_list = malloc(sizeof(struct reg *) * (*reg_list_size)); *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size));
if (*reg_list == NULL)
return ERROR_FAIL;
/* for (i = 0; i < *reg_list_size; i++)
* GDB register packet format for ARM:
* - the first 16 registers are r0..r15
* - (obsolete) 8 FPA registers
* - (obsolete) FPA status
* - CPSR
*/
for (i = 0; i < 16; i++)
(*reg_list)[i] = &armv7m->arm.core_cache->reg_list[i]; (*reg_list)[i] = &armv7m->arm.core_cache->reg_list[i];
for (i = 16; i < 24; i++)
(*reg_list)[i] = &arm_gdb_dummy_fp_reg;
(*reg_list)[24] = &arm_gdb_dummy_fps_reg;
(*reg_list)[25] = &armv7m->arm.core_cache->reg_list[ARMV7M_xPSR];
return ERROR_OK; return ERROR_OK;
} }
@ -527,6 +518,7 @@ struct reg_cache *armv7m_build_reg_cache(struct target *target)
struct reg_cache *cache = malloc(sizeof(struct reg_cache)); struct reg_cache *cache = malloc(sizeof(struct reg_cache));
struct reg *reg_list = calloc(num_regs, sizeof(struct reg)); struct reg *reg_list = calloc(num_regs, sizeof(struct reg));
struct arm_reg *arch_info = calloc(num_regs, sizeof(struct arm_reg)); struct arm_reg *arch_info = calloc(num_regs, sizeof(struct arm_reg));
struct reg_feature *feature;
int i; int i;
/* Build the process context cache */ /* Build the process context cache */
@ -548,11 +540,30 @@ struct reg_cache *armv7m_build_reg_cache(struct target *target)
reg_list[i].valid = 0; reg_list[i].valid = 0;
reg_list[i].type = &armv7m_reg_type; reg_list[i].type = &armv7m_reg_type;
reg_list[i].arch_info = &arch_info[i]; reg_list[i].arch_info = &arch_info[i];
reg_list[i].group = armv7m_regs[i].group;
reg_list[i].number = i;
reg_list[i].exist = true;
reg_list[i].caller_save = true; /* gdb defaults to true */
feature = calloc(1, sizeof(struct reg_feature));
if (feature) {
feature->name = armv7m_regs[i].feature;
reg_list[i].feature = feature;
} else
LOG_ERROR("unable to allocate feature list");
reg_list[i].reg_data_type = calloc(1, sizeof(struct reg_data_type));
if (reg_list[i].reg_data_type)
reg_list[i].reg_data_type->type = armv7m_regs[i].type;
else
LOG_ERROR("unable to allocate reg type list");
} }
arm->cpsr = reg_list + ARMV7M_xPSR; arm->cpsr = reg_list + ARMV7M_xPSR;
arm->pc = reg_list + ARMV7M_PC; arm->pc = reg_list + ARMV7M_PC;
arm->core_cache = cache; arm->core_cache = cache;
return cache; return cache;
} }