- 16 Mar, 2020 2 commits
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Clemens Backes authored
This implements inspection of live registers on breakpoints in Liftoff. To that end, the frame pointer of the WasmDebugBreak frame is remembered when iterating the stack. Based on a platform-specific implementation of {WasmDebugBreakFrameConstants}, the offset of the respective register within that frame is computed, and the value is read from the frame. As a drive-by, the wasm debug side table is storing register codes as liftoff codes, which can also store register pairs (needed for i64 on 32-bit platforms, and for SIMD, which is not supported yet). R=jkummerow@chromium.org CC=thibaudm@chromium.org Bug: v8:10222 Change-Id: I01b669baf56430e100cd46cc46f210121ea679da Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2102574Reviewed-by: Simon Zünd <szuend@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#66719}
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Clemens Backes authored
The set of registers to spill was wrong. Instead of spilling wasm parameter registers (like the WasmCompileLazy builtin), we should spill all registers that are being used as Liftoff cache registers. This CL defines platform-specific WasmDebugBreakFrameConstants which hold the set of registers to spill. This set is used in the builtin, and will later be used for inspecting the spilled registers. In order to iterate bit sets more easily in both direction (MSB to LSB or LSB to MSB), we add a base::bits::IterateBits{,Backwards} method which provides the respective iterators. R=jkummerow@chromium.org CC=thibaudm@chromium.org Bug: v8:10222 Change-Id: I73ecbdff9b29e244c478b404063c0c9ee25bc821 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2102570Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#66715}
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- 25 Oct, 2019 2 commits
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Michael Starzinger authored
R=clemensb@chromium.org BUG=v8:9810 Change-Id: I4bfd667952cb933a131701c692cad18857df2244 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1878711Reviewed-by: Clemens Backes <clemensb@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#64562}
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Michael Starzinger authored
This class used to describe unoptimized but compiled frames. All such frames are by now covered via the architecture-independent description in the {StandardFrameConstants} class (or one of its subclasses). R=clemensb@chromium.org BUG=v8:9810 Change-Id: I294cc6eec7d4a05e88e7aa336f1ebedfa0eb6e98 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1878708Reviewed-by: Clemens Backes <clemensb@chromium.org> Reviewed-by: Michael Stanton <mvstanton@chromium.org> Commit-Queue: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#64556}
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- 12 Jul, 2019 1 commit
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Peter Marshall authored
Everyone was getting a copy of this through debug.h. Bug: v8:9396 Change-Id: I5189cb4bf27a3381768b0be479d7b3d60dec20bb Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1695472 Commit-Queue: Peter Marshall <petermarshall@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Reviewed-by: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#62670}
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- 28 May, 2019 1 commit
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Yang Guo authored
Bug: v8:9247 Change-Id: I2f999ed3a8cc0931e5092f2ac6e709b8ff3f9e42 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1630678 Commit-Queue: Yang Guo <yangguo@chromium.org> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#61896}
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