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author | David Brownell <dbrownell@users.sourceforge.net> | 2009-11-05 21:59:45 -0800 |
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committer | David Brownell <dbrownell@users.sourceforge.net> | 2009-11-05 21:59:45 -0800 |
commit | da739aa25733b5a252a2b0b8ad76a3dc886f1132 (patch) | |
tree | 9bde078183e994078843dac44efd909f49e8756f /src/target/cortex_m3.c | |
parent | db116b1ea3c77a3c5850fccbce9e0795faa21dda (diff) | |
download | riscv-openocd-da739aa25733b5a252a2b0b8ad76a3dc886f1132.zip riscv-openocd-da739aa25733b5a252a2b0b8ad76a3dc886f1132.tar.gz riscv-openocd-da739aa25733b5a252a2b0b8ad76a3dc886f1132.tar.bz2 |
Cortex-M3: use the new inheritance/nesting scheme
Use new target_to_cm3() and target_to_armv7m() inlines,
instead of a series of x->arch_info conversions. Remove
arch_info, since nothing uses it.
Also fix an omission: the Cortex-M3 commands didn't verify
that they were operating on that kind of target. Add comment
about the ARMv7M version of that omission.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Diffstat (limited to 'src/target/cortex_m3.c')
-rw-r--r-- | src/target/cortex_m3.c | 192 |
1 files changed, 88 insertions, 104 deletions
diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c index a1d1cbc..e157805 100644 --- a/src/target/cortex_m3.c +++ b/src/target/cortex_m3.c @@ -37,6 +37,10 @@ #include "arm_disassembler.h" +/* NOTE: most of this should work fine for the Cortex-M1 and + * Cortex-M0 cores too, although they're ARMv6-M not ARMv7-M. + */ + #define ARRAY_SIZE(x) ((int)(sizeof(x)/sizeof((x)[0]))) @@ -123,10 +127,8 @@ static int cortexm3_dap_write_coreregister_u32(swjdp_common_t *swjdp, static int cortex_m3_write_debug_halt_mask(target_t *target, uint32_t mask_on, uint32_t mask_off) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - swjdp_common_t *swjdp = &armv7m->swjdp_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct swjdp_common_s *swjdp = &cortex_m3->armv7m.swjdp_info; /* mask off status bits */ cortex_m3->dcb_dhcsr &= ~((0xFFFF << 16) | mask_off); @@ -138,10 +140,8 @@ static int cortex_m3_write_debug_halt_mask(target_t *target, static int cortex_m3_clear_halt(target_t *target) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - swjdp_common_t *swjdp = &armv7m->swjdp_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct swjdp_common_s *swjdp = &cortex_m3->armv7m.swjdp_info; /* clear step if any */ cortex_m3_write_debug_halt_mask(target, C_HALT, C_STEP); @@ -157,10 +157,8 @@ static int cortex_m3_clear_halt(target_t *target) static int cortex_m3_single_step_core(target_t *target) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - swjdp_common_t *swjdp = &armv7m->swjdp_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct swjdp_common_s *swjdp = &cortex_m3->armv7m.swjdp_info; uint32_t dhcsr_save; /* backup dhcsr reg */ @@ -183,11 +181,8 @@ static int cortex_m3_endreset_event(target_t *target) { int i; uint32_t dcb_demcr; - - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - swjdp_common_t *swjdp = &armv7m->swjdp_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct swjdp_common_s *swjdp = &cortex_m3->armv7m.swjdp_info; cortex_m3_fp_comparator_t *fp_list = cortex_m3->fp_comparator_list; cortex_m3_dwt_comparator_t *dwt_list = cortex_m3->dwt_comparator_list; @@ -242,9 +237,7 @@ static int cortex_m3_endreset_event(target_t *target) static int cortex_m3_examine_debug_reason(target_t *target) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); /* THIS IS NOT GOOD, TODO - better logic for detection of debug state reason */ /* only check the debug reason if we don't know it already */ @@ -272,9 +265,7 @@ static int cortex_m3_examine_debug_reason(target_t *target) static int cortex_m3_examine_exception_reason(target_t *target) { uint32_t shcsr, except_sr, cfsr = -1, except_ar = -1; - - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; + struct armv7m_common_s *armv7m = target_to_armv7m(target); swjdp_common_t *swjdp = &armv7m->swjdp_info; mem_ap_read_u32(swjdp, NVIC_SHCSR, &shcsr); @@ -324,10 +315,8 @@ static int cortex_m3_debug_entry(target_t *target) int i; uint32_t xPSR; int retval; - - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct armv7m_common_s *armv7m = &cortex_m3->armv7m; swjdp_common_t *swjdp = &armv7m->swjdp_info; LOG_DEBUG(" "); @@ -397,11 +386,8 @@ static int cortex_m3_poll(target_t *target) { int retval; enum target_state prev_target_state = target->state; - - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - swjdp_common_t *swjdp = &armv7m->swjdp_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct swjdp_common_s *swjdp = &cortex_m3->armv7m.swjdp_info; /* Read from Debug Halting Control and Status Register */ retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr); @@ -514,10 +500,8 @@ static int cortex_m3_halt(target_t *target) static int cortex_m3_soft_reset_halt(struct target_s *target) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - swjdp_common_t *swjdp = &armv7m->swjdp_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct swjdp_common_s *swjdp = &cortex_m3->armv7m.swjdp_info; uint32_t dcb_dhcsr = 0; int retval, timeout = 0; @@ -569,8 +553,7 @@ static void cortex_m3_enable_breakpoints(struct target_s *target) static int cortex_m3_resume(struct target_s *target, int current, uint32_t address, int handle_breakpoints, int debug_execution) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; + struct armv7m_common_s *armv7m = target_to_armv7m(target); breakpoint_t *breakpoint = NULL; uint32_t resume_pc; @@ -658,9 +641,8 @@ static int cortex_m3_resume(struct target_s *target, int current, static int cortex_m3_step(struct target_s *target, int current, uint32_t address, int handle_breakpoints) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct armv7m_common_s *armv7m = &cortex_m3->armv7m; swjdp_common_t *swjdp = &armv7m->swjdp_info; breakpoint_t *breakpoint = NULL; @@ -672,12 +654,16 @@ static int cortex_m3_step(struct target_s *target, int current, /* current = 1: continue on current pc, otherwise continue at <address> */ if (!current) - buf_set_u32(armv7m->core_cache->reg_list[15].value, 0, 32, address); + buf_set_u32(cortex_m3->armv7m.core_cache->reg_list[15].value, + 0, 32, address); /* the front-end may request us not to handle breakpoints */ - if (handle_breakpoints) - if ((breakpoint = breakpoint_find(target, buf_get_u32(armv7m->core_cache->reg_list[15].value, 0, 32)))) + if (handle_breakpoints) { + breakpoint = breakpoint_find(target, buf_get_u32(armv7m + ->core_cache->reg_list[15].value, 0, 32)); + if (breakpoint) cortex_m3_unset_breakpoint(target, breakpoint); + } target->debug_reason = DBG_REASON_SINGLESTEP; @@ -706,9 +692,8 @@ static int cortex_m3_step(struct target_s *target, int current, static int cortex_m3_assert_reset(target_t *target) { - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - swjdp_common_t *swjdp = &armv7m->swjdp_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct swjdp_common_s *swjdp = &cortex_m3->armv7m.swjdp_info; int assert_srst = 1; LOG_DEBUG("target->state: %s", @@ -859,12 +844,8 @@ cortex_m3_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint) int retval; int fp_num = 0; uint32_t hilo; - - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - - cortex_m3_fp_comparator_t * comparator_list = cortex_m3->fp_comparator_list; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + cortex_m3_fp_comparator_t *comparator_list = cortex_m3->fp_comparator_list; if (breakpoint->set) { @@ -928,9 +909,7 @@ static int cortex_m3_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint) { int retval; - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); cortex_m3_fp_comparator_t * comparator_list = cortex_m3->fp_comparator_list; if (!breakpoint->set) @@ -984,9 +963,7 @@ cortex_m3_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint) static int cortex_m3_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); if (cortex_m3->auto_bp_type) { @@ -1035,9 +1012,7 @@ cortex_m3_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint) static int cortex_m3_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); /* REVISIT why check? FBP can be updated with core running ... */ if (target->state != TARGET_HALTED) @@ -1067,10 +1042,7 @@ cortex_m3_set_watchpoint(struct target_s *target, watchpoint_t *watchpoint) { int dwt_num = 0; uint32_t mask, temp; - - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); /* watchpoint params were validated earlier */ mask = 0; @@ -1133,9 +1105,7 @@ cortex_m3_set_watchpoint(struct target_s *target, watchpoint_t *watchpoint) static int cortex_m3_unset_watchpoint(struct target_s *target, watchpoint_t *watchpoint) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); cortex_m3_dwt_comparator_t *comparator; int dwt_num; @@ -1172,9 +1142,7 @@ cortex_m3_unset_watchpoint(struct target_s *target, watchpoint_t *watchpoint) static int cortex_m3_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); /* REVISIT why check? DWT can be updated with core running ... */ if (target->state != TARGET_HALTED) @@ -1232,9 +1200,7 @@ cortex_m3_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint) static int cortex_m3_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); /* REVISIT why check? DWT can be updated with core running ... */ if (target->state != TARGET_HALTED) @@ -1271,8 +1237,7 @@ static int cortex_m3_load_core_reg_u32(struct target_s *target, enum armv7m_regtype type, uint32_t num, uint32_t * value) { int retval; - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; + struct armv7m_common_s *armv7m = target_to_armv7m(target); swjdp_common_t *swjdp = &armv7m->swjdp_info; /* NOTE: we "know" here that the register identifiers used @@ -1336,9 +1301,7 @@ static int cortex_m3_store_core_reg_u32(struct target_s *target, { int retval; uint32_t reg; - - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; + struct armv7m_common_s *armv7m = target_to_armv7m(target); swjdp_common_t *swjdp = &armv7m->swjdp_info; #ifdef ARMV7_GDB_HACKS @@ -1413,8 +1376,7 @@ static int cortex_m3_store_core_reg_u32(struct target_s *target, static int cortex_m3_read_memory(struct target_s *target, uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; + struct armv7m_common_s *armv7m = target_to_armv7m(target); swjdp_common_t *swjdp = &armv7m->swjdp_info; int retval; @@ -1446,8 +1408,7 @@ static int cortex_m3_read_memory(struct target_s *target, uint32_t address, static int cortex_m3_write_memory(struct target_s *target, uint32_t address, uint32_t size, uint32_t count, uint8_t *buffer) { - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; + struct armv7m_common_s *armv7m = target_to_armv7m(target); swjdp_common_t *swjdp = &armv7m->swjdp_info; int retval; @@ -1632,11 +1593,8 @@ static int cortex_m3_examine(struct target_s *target) int retval; uint32_t cpuid, fpcr; int i; - - /* get pointers to arch-specific information */ - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; - swjdp_common_t *swjdp = &armv7m->swjdp_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct swjdp_common_s *swjdp = &cortex_m3->armv7m.swjdp_info; if ((retval = ahbap_debugport_init(swjdp)) != ERROR_OK) return retval; @@ -1702,7 +1660,7 @@ static int cortex_m3_dcc_read(swjdp_common_t *swjdp, uint8_t *value, uint8_t *ct static int cortex_m3_target_request_data(target_t *target, uint32_t size, uint8_t *buffer) { - armv7m_common_t *armv7m = target->arch_info; + struct armv7m_common_s *armv7m = target_to_armv7m(target); swjdp_common_t *swjdp = &armv7m->swjdp_info; uint8_t data; uint8_t ctrl; @@ -1722,7 +1680,7 @@ static int cortex_m3_handle_target_request(void *priv) target_t *target = priv; if (!target_was_examined(target)) return ERROR_OK; - armv7m_common_t *armv7m = target->arch_info; + struct armv7m_common_s *armv7m = target_to_armv7m(target); swjdp_common_t *swjdp = &armv7m->swjdp_info; if (!target->dbg_msg_enabled) @@ -1759,8 +1717,7 @@ static int cortex_m3_init_arch_info(target_t *target, cortex_m3_common_t *cortex_m3, jtag_tap_t *tap) { int retval; - armv7m_common_t *armv7m; - armv7m = &cortex_m3->armv7m; + struct armv7m_common_s *armv7m = &cortex_m3->armv7m; armv7m_init_arch_info(target, armv7m); @@ -1775,11 +1732,6 @@ static int cortex_m3_init_arch_info(target_t *target, armv7m->swjdp_info.memaccess_tck = 8; armv7m->swjdp_info.tar_autoincr_block = (1 << 12); /* Cortex-M3 has 4096 bytes autoincrement range */ - /* initialize arch-specific breakpoint handling */ - - cortex_m3->common_magic = CORTEX_M3_COMMON_MAGIC; - cortex_m3->arch_info = NULL; - /* register arch-specific functions */ armv7m->examine_debug_reason = cortex_m3_examine_debug_reason; @@ -1788,7 +1740,6 @@ static int cortex_m3_init_arch_info(target_t *target, armv7m->pre_restore_context = NULL; armv7m->post_restore_context = NULL; - armv7m->arch_info = cortex_m3; armv7m->load_core_reg_u32 = cortex_m3_load_core_reg_u32; armv7m->store_core_reg_u32 = cortex_m3_store_core_reg_u32; @@ -1806,11 +1757,30 @@ static int cortex_m3_target_create(struct target_s *target, Jim_Interp *interp) { cortex_m3_common_t *cortex_m3 = calloc(1,sizeof(cortex_m3_common_t)); + cortex_m3->common_magic = CORTEX_M3_COMMON_MAGIC; cortex_m3_init_arch_info(target, cortex_m3, target->tap); return ERROR_OK; } +/*--------------------------------------------------------------------------*/ + +static int cortex_m3_verify_pointer(struct command_context_s *cmd_ctx, + struct cortex_m3_common_s *cm3) +{ + if (cm3->common_magic != CORTEX_M3_COMMON_MAGIC) { + command_print(cmd_ctx, "target is not a Cortex-M3"); + return ERROR_TARGET_INVALID; + } + return ERROR_OK; +} + +/* + * Only stuff below this line should need to verify that its target + * is a Cortex-M3. Everything else should have indirected through the + * cortexm3_target structure, which is only used with CM3 targets. + */ + /* * REVISIT Thumb2 disassembly should work for all ARMv7 cores, as well * as at least ARM-1156T2. The interesting thing about Cortex-M is @@ -1821,12 +1791,17 @@ static int handle_cortex_m3_disassemble_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { - int retval = ERROR_OK; + int retval; target_t *target = get_current_target(cmd_ctx); + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); uint32_t address; unsigned long count = 1; arm_instruction_t cur_instruction; + retval = cortex_m3_verify_pointer(cmd_ctx, cortex_m3); + if (retval != ERROR_OK) + return retval; + errno = 0; switch (argc) { case 2: @@ -1871,11 +1846,17 @@ handle_cortex_m3_vector_catch_command(struct command_context_s *cmd_ctx, char *cmd, char **argv, int argc) { target_t *target = get_current_target(cmd_ctx); - armv7m_common_t *armv7m = target->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + struct armv7m_common_s *armv7m = &cortex_m3->armv7m; swjdp_common_t *swjdp = &armv7m->swjdp_info; uint32_t demcr = 0; + int retval; int i; + retval = cortex_m3_verify_pointer(cmd_ctx, cortex_m3); + if (retval != ERROR_OK) + return retval; + mem_ap_read_atomic_u32(swjdp, DCB_DEMCR, &demcr); if (argc > 0) { @@ -1924,8 +1905,12 @@ handle_cortex_m3_mask_interrupts_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { target_t *target = get_current_target(cmd_ctx); - armv7m_common_t *armv7m = target->arch_info; - cortex_m3_common_t *cortex_m3 = armv7m->arch_info; + struct cortex_m3_common_s *cortex_m3 = target_to_cm3(target); + int retval; + + retval = cortex_m3_verify_pointer(cmd_ctx, cortex_m3); + if (retval != ERROR_OK) + return retval; if (target->state != TARGET_HALTED) { @@ -2016,4 +2001,3 @@ target_type_t cortexm3_target = .has_mmu = cortex_m3_has_mmu, .examine = cortex_m3_examine, }; - |