diff options
Diffstat (limited to 'gdb/NEWS')
| -rw-r--r-- | gdb/NEWS | 17 |
1 files changed, 16 insertions, 1 deletions
@@ -36,7 +36,19 @@ Renesas RX rx tracepoint actions and condition expressions. Use the "tvariable" command to create, and "info tvariables" to view; see "Trace State Variables" in the manual for more detail. - + +* Fast tracepoints + + GDB now includes an option for defining fast tracepoints, which + targets may implement more efficiently, such as by installing a jump + into the target agent rather than a trap instruction. The resulting + speedup can be by two orders of magnitude or more, although the + tradeoff is that some program locations on some target architectures + might not allow fast tracepoint installation, for instance if the + instruction to be replaced is shorter than the jump. To request a + fast tracepoint, use the "ftrace" command, with syntax identical to + the regular trace command. + * Changed commands disassemble @@ -101,6 +113,9 @@ teval EXPR, ... Evaluate the given expressions without collecting anything into the trace buffer. (Valid in tracepoint actions only.) +ftrace FN / FILE:LINE / *ADDR + Define a fast tracepoint at the given function, line, or address. + * New options set follow-exec-mode new|same |