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Here, the provider is responsible for updating the trapframe to redirect control flow and for computing the return address. Once software-saved registers are restored, the emulation shifts the remaining context down on the stack to make space for the return address, then copies the address provided by the invop handler. dtrace_invop() is modified to allocate temporary storage space on the stack for use by the provider to return the return address. This is to support a new provider for amd64 which can instrument arbitrary instructions, not just function entry and exit instructions as FBT does. In collaboration with: christos Sponsored by: Google, Inc. (GSoC 2022) Sponsored by: The FreeBSD Foundation MFC after: 2 weeks |
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| .. | ||
| aarch64 | ||
| amd64 | ||
| arm | ||
| i386 | ||
| powerpc | ||
| riscv | ||
| x86 | ||
| dtrace_anon.c | ||
| dtrace_cddl.h | ||
| dtrace_debug.c | ||
| dtrace_hacks.c | ||
| dtrace_ioctl.c | ||
| dtrace_load.c | ||
| dtrace_modevent.c | ||
| dtrace_sysctl.c | ||
| dtrace_test.c | ||
| dtrace_unload.c | ||
| dtrace_vtime.c | ||