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| author | Mathias K <kesmtp@freenet.de> | 2012-03-10 14:34:44 +0100 |
|---|---|---|
| committer | Spencer Oliver <spen@spen-soft.co.uk> | 2012-03-14 20:55:08 +0000 |
| commit | dbb8de15e39390bf5f323dddb8e5f090515977d1 (patch) | |
| tree | bf2d4bb38b36ecc44b440833fcd100788e4ad5f9 /src | |
| parent | e2073cc18ae1380a7f6d0f61f49aab42de01b732 (diff) | |
| download | riscv-openocd-dbb8de15e39390bf5f323dddb8e5f090515977d1.zip riscv-openocd-dbb8de15e39390bf5f323dddb8e5f090515977d1.tar.gz riscv-openocd-dbb8de15e39390bf5f323dddb8e5f090515977d1.tar.bz2 | |
stm32: Add floating point register read/write.
This patch add floating point register read/write
functionality through the SCS debug interface.
Change-Id: Id20e109dd7cccba00671d55ca8aabeb4936cceb9
Signed-off-by: Mathias K <kesmtp@freenet.de>
Reviewed-on: http://openocd.zylin.com/512
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Diffstat (limited to 'src')
| -rw-r--r-- | src/target/stm32_stlink.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/src/target/stm32_stlink.c b/src/target/stm32_stlink.c index 64e83f5..d2f38e5 100644 --- a/src/target/stm32_stlink.c +++ b/src/target/stm32_stlink.c @@ -38,6 +38,9 @@ #include "cortex_m.h" #include "arm_semihosting.h" +#define ARMV7M_SCS_DCRSR 0xe000edf4 +#define ARMV7M_SCS_DCRDR 0xe000edf8 + static inline struct stlink_interface_s *target_to_stlink(struct target *target) { return target->tap->priv; @@ -65,8 +68,19 @@ static int stm32_stlink_load_core_reg_u32(struct target *target, LOG_ERROR("JTAG failure %i", retval); return ERROR_JTAG_DEVICE_ERROR; } - LOG_DEBUG("load from core reg %i value 0x%" PRIx32 "", - (int)num, *value); + LOG_DEBUG("load from core reg %i value 0x%" PRIx32 "", (int)num, *value); + break; + + case 33: + case 64 ... 96: + /* Floating-point Status and Registers */ + retval = target_write_u32(target, ARMV7M_SCS_DCRSR, num); + if (retval != ERROR_OK) + return retval; + retval = target_read_u32(target, ARMV7M_SCS_DCRDR, value); + if (retval != ERROR_OK) + return retval; + LOG_DEBUG("load from core reg %i value 0x%" PRIx32 "", (int)num, *value); break; case ARMV7M_PRIMASK: @@ -150,6 +164,18 @@ static int stm32_stlink_store_core_reg_u32(struct target *target, LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", (int)num, value); break; + case 33: + case 64 ... 96: + /* Floating-point Status and Registers */ + retval = target_write_u32(target, ARMV7M_SCS_DCRDR, value); + if (retval != ERROR_OK) + return retval; + retval = target_write_u32(target, ARMV7M_SCS_DCRSR, num | (1<<16)); + if (retval != ERROR_OK) + return retval; + LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", (int)num, value); + break; + case ARMV7M_PRIMASK: case ARMV7M_BASEPRI: case ARMV7M_FAULTMASK: |