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| author | Mark Johnston <markj@FreeBSD.org> | 2020-12-14 14:54:20 +0000 |
|---|---|---|
| committer | Mark Johnston <markj@FreeBSD.org> | 2020-12-14 14:54:20 +0000 |
| commit | afa53e3372114192a6c7e5fd8dc2682e97a61e34 (patch) | |
| tree | 60bb1461ec84d8708864e4a23f03079cfd4787a9 | |
| parent | 15a74ac247e7ef3d77088a202ca1c479abd50703 (diff) | |
| download | src-test2-afa53e3372114192a6c7e5fd8dc2682e97a61e34.tar.gz src-test2-afa53e3372114192a6c7e5fd8dc2682e97a61e34.zip | |
MFC r368414:
arm: Let the GDB stub write to SP, LR and GP registers
PR: 251463
Notes
Notes:
svn path=/stable/12/; revision=368636
| -rw-r--r-- | sys/arm/arm/gdb_machdep.c | 18 | ||||
| -rw-r--r-- | sys/arm/include/gdb_machdep.h | 2 |
2 files changed, 18 insertions, 2 deletions
diff --git a/sys/arm/arm/gdb_machdep.c b/sys/arm/arm/gdb_machdep.c index 21c04341c3f6..fb957418c234 100644 --- a/sys/arm/arm/gdb_machdep.c +++ b/sys/arm/arm/gdb_machdep.c @@ -98,11 +98,25 @@ gdb_cpu_getreg(int regnum, size_t *regsz) void gdb_cpu_setreg(int regnum, void *val) { + if (kdb_thread != curthread) + return; switch (regnum) { case GDB_REG_PC: - if (kdb_thread == curthread) - kdb_frame->tf_pc = *(register_t *)val; + kdb_frame->tf_pc = *(register_t *)val; + break; + case GDB_REG_SP: + kdb_frame->tf_svc_sp = *(register_t *)val; + break; + case GDB_REG_LR: + kdb_frame->tf_svc_lr = *(register_t *)val; + break; + default: + /* Write to the general purpose registers r0-r12. */ + if (regnum >= 0 && regnum <= 12) { + *(&kdb_frame->tf_r0 + regnum) = *(register_t *)val; + } + break; } } diff --git a/sys/arm/include/gdb_machdep.h b/sys/arm/include/gdb_machdep.h index 79c74cdd0e1f..017025253bd5 100644 --- a/sys/arm/include/gdb_machdep.h +++ b/sys/arm/include/gdb_machdep.h @@ -33,6 +33,8 @@ #define GDB_BUFSZ 400 #define GDB_NREGS 26 +#define GDB_REG_SP 13 +#define GDB_REG_LR 14 #define GDB_REG_PC 15 static __inline size_t |