diff options
| author | Salvador Arroyo <sarroyofdez@yahoo.es> | 2017-05-07 18:39:17 +0200 |
|---|---|---|
| committer | Freddie Chopin <freddie.chopin@gmail.com> | 2017-05-08 18:04:56 +0100 |
| commit | 4831ce4433adf4e2fbf5729bebf8c0f7c2fce1c1 (patch) | |
| tree | e91008743b085f53691fdc13776e584c665f9ec5 /src/target/mips_m4k.c | |
| parent | f5151b6d46cb0b939e3beb0fc61cb8718908f4b8 (diff) | |
mips32: add micromips isa handling
Read and save configuration registers, up to 4.
Config3 holds the micromips implementation info.
Added isa implementation info to mips32_common.
Added isa filter to avoid common mistakes, but only
if one isa mode is implemented.
When resuming the isa requested is set if more than
one isa mode is implemented.
Change-Id: I1d6526c5525bffac8d75e031b842b2edc6310e28
Signed-off-by: Salvador Arroyo <sarroyofdez@yahoo.es>
Reviewed-on: http://openocd.zylin.com/4123
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Diffstat (limited to 'src/target/mips_m4k.c')
| -rw-r--r-- | src/target/mips_m4k.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/target/mips_m4k.c b/src/target/mips_m4k.c index 8b32d115..7ab30fe0 100644 --- a/src/target/mips_m4k.c +++ b/src/target/mips_m4k.c @@ -41,7 +41,7 @@ static int mips_m4k_set_breakpoint(struct target *target, static int mips_m4k_unset_breakpoint(struct target *target, struct breakpoint *breakpoint); static int mips_m4k_internal_restore(struct target *target, int current, - uint32_t address, int handle_breakpoints, + target_addr_t address, int handle_breakpoints, int debug_execution); static int mips_m4k_halt(struct target *target); static int mips_m4k_bulk_write_memory(struct target *target, target_addr_t address, @@ -108,11 +108,14 @@ static int mips_m4k_debug_entry(struct target *target) /* attempt to find halt reason */ mips_m4k_examine_debug_reason(target); + mips32_read_config_regs(target); + /* default to mips32 isa, it will be changed below if required */ mips32->isa_mode = MIPS32_ISA_MIPS32; - if (ejtag_info->impcode & EJTAG_IMP_MIPS16) - mips32->isa_mode = buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 1); + /* other than mips32 only and isa bit set ? */ + if (mips32->isa_imp && buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 1)) + mips32->isa_mode = mips32->isa_imp == 2 ? MIPS32_ISA_MIPS16E : MIPS32_ISA_MMIPS32; LOG_DEBUG("entered debug state at PC 0x%" PRIx32 ", target->state: %s", buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32), @@ -431,7 +434,7 @@ static int mips_m4k_restore_smp(struct target *target, uint32_t address, int han } static int mips_m4k_internal_restore(struct target *target, int current, - uint32_t address, int handle_breakpoints, int debug_execution) + target_addr_t address, int handle_breakpoints, int debug_execution) { struct mips32_common *mips32 = target_to_mips32(target); struct mips_ejtag *ejtag_info = &mips32->ejtag_info; @@ -451,12 +454,13 @@ static int mips_m4k_internal_restore(struct target *target, int current, /* current = 1: continue on current pc, otherwise continue at <address> */ if (!current) { + mips_m4k_isa_filter(mips32->isa_imp, &address); buf_set_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32, address); mips32->core_cache->reg_list[MIPS32_PC].dirty = 1; mips32->core_cache->reg_list[MIPS32_PC].valid = 1; } - if (ejtag_info->impcode & EJTAG_IMP_MIPS16) + if ((mips32->isa_imp > 1) && debug_execution) /* if more than one isa supported */ buf_set_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 1, mips32->isa_mode); if (!current) @@ -544,6 +548,7 @@ static int mips_m4k_step(struct target *target, int current, /* current = 1: continue on current pc, otherwise continue at <address> */ if (!current) { + mips_m4k_isa_filter(mips32->isa_imp, &address); buf_set_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32, address); mips32->core_cache->reg_list[MIPS32_PC].dirty = 1; mips32->core_cache->reg_list[MIPS32_PC].valid = 1; |