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| author | Zoltán Dudás <zedudi@gmail.com> | 2021-11-24 17:13:50 +0100 |
|---|---|---|
| committer | Antonio Borneo <borneo.antonio@gmail.com> | 2022-02-05 21:40:17 +0000 |
| commit | 5ab74bde06541ce199390ead348a3e107ee9c0f4 (patch) | |
| tree | 416f5c7be1369187ab65d16bd6ce0342bc13b102 /src/target/semihosting_common.h | |
| parent | dbbac5f11d662ab0827a997aa5d173fd62c51708 (diff) | |
| download | riscv-openocd-5ab74bde06541ce199390ead348a3e107ee9c0f4.zip riscv-openocd-5ab74bde06541ce199390ead348a3e107ee9c0f4.tar.gz riscv-openocd-5ab74bde06541ce199390ead348a3e107ee9c0f4.tar.bz2 | |
semihosting: User defined operation, Tcl command exec on host
Enabling a portion (0x100 - 0x107) of the user defined semihosting
operation number range (0x100 - 0x1FF) to be processed with the help of
the existing target event mechanism, to implement a general-purpose Tcl
interface for the target available on the host, via semihosting
interface.
Example usage:
- The user configures a Tcl command as a callback for one of the newly
defined events (semihosting-user-cmd-0x10X) in the configuration
file.
- The target can make a semihosting call with <opnum>, passing optional
parameters for the call.
If there is no callback registered to the user defined operation number,
nothing happens.
Example usage: Configure RTT automatically with the exact, linked
control block location from target.
Signed-off-by: Zoltán Dudás <zedudi@gmail.com>
Change-Id: I10e1784b1fecd4e630d78df81cb44bf1aa2fc247
Reviewed-on: https://review.openocd.org/c/openocd/+/6748
Tested-by: jenkins
Reviewed-by: Oleksij Rempel <linux@rempel-privat.de>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Diffstat (limited to 'src/target/semihosting_common.h')
| -rw-r--r-- | src/target/semihosting_common.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/target/semihosting_common.h b/src/target/semihosting_common.h index b83464e..6eb9ca2 100644 --- a/src/target/semihosting_common.h +++ b/src/target/semihosting_common.h @@ -75,8 +75,14 @@ enum semihosting_operation_numbers { SEMIHOSTING_SYS_WRITE = 0x05, SEMIHOSTING_SYS_WRITEC = 0x03, SEMIHOSTING_SYS_WRITE0 = 0x04, + SEMIHOSTING_USER_CMD_0x100 = 0x100, /* First user cmd op code */ + SEMIHOSTING_USER_CMD_0x107 = 0x107, /* Last supported user cmd op code */ + SEMIHOSTING_USER_CMD_0x1FF = 0x1FF, /* Last user cmd op code */ }; +/** Maximum allowed Tcl command segment length in bytes*/ +#define SEMIHOSTING_MAX_TCL_COMMAND_FIELD_LENGTH (1024 * 1024) + /* * Codes used by SEMIHOSTING_SYS_EXIT (formerly * SEMIHOSTING_REPORT_EXCEPTION). |