ae03752fd9
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/+/2102574
Reviewed-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}
339 lines
7.4 KiB
Plaintext
339 lines
7.4 KiB
Plaintext
Tests stepping through wasm scripts.
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Instantiating.
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Waiting for wasm script (ignoring first non-wasm script).
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Setting breakpoint at offset 38 on script wasm://wasm/0c10a5fe
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Calling main(4)
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 38: Wasm opcode 0x1
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Scope:
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at wasm_A (0:38):
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- scope (global):
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- scope (local):
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stack:
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at wasm_B (0:56):
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- scope (global):
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- scope (local):
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locals: "var0": 3 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Setting breakpoint at offset 39 on script v8://test/runWasm
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Setting breakpoint at offset 61 on script v8://test/runWasm
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Setting breakpoint at offset 60 on script v8://test/runWasm
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Setting breakpoint at offset 54 on script v8://test/runWasm
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Setting breakpoint at offset 53 on script v8://test/runWasm
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Setting breakpoint at offset 51 on script v8://test/runWasm
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Setting breakpoint at offset 49 on script v8://test/runWasm
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Setting breakpoint at offset 45 on script v8://test/runWasm
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Setting breakpoint at offset 47 on script v8://test/runWasm
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 39: Wasm opcode 0x1
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Scope:
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at wasm_A (0:39):
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- scope (global):
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- scope (local):
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stack:
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at wasm_B (0:56):
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- scope (global):
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- scope (local):
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locals: "var0": 3 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 45: Wasm opcode 0x20
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Scope:
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at wasm_B (0:45):
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- scope (global):
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- scope (local):
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locals: "var0": 3 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 47: Wasm opcode 0x4
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Scope:
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at wasm_B (0:47):
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- scope (global):
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- scope (local):
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locals: "var0": 3 (number)
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stack: "0": 3 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 49: Wasm opcode 0x20
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Scope:
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at wasm_B (0:49):
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- scope (global):
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- scope (local):
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locals: "var0": 3 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 51: Wasm opcode 0x41
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Scope:
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at wasm_B (0:51):
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- scope (global):
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- scope (local):
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locals: "var0": 3 (number)
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stack: "0": 3 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 53: Wasm opcode 0x6b
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Scope:
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at wasm_B (0:53):
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- scope (global):
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- scope (local):
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locals: "var0": 3 (number)
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stack: "0": 3 (number), "1": 1 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 54: Wasm opcode 0x21
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Scope:
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at wasm_B (0:54):
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- scope (global):
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- scope (local):
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locals: "var0": 3 (number)
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stack: "0": 2 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 38: Wasm opcode 0x1
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Scope:
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at wasm_A (0:38):
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- scope (global):
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- scope (local):
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stack:
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at wasm_B (0:56):
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- scope (global):
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- scope (local):
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locals: "var0": 2 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 39: Wasm opcode 0x1
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Scope:
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at wasm_A (0:39):
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- scope (global):
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- scope (local):
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stack:
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at wasm_B (0:56):
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- scope (global):
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- scope (local):
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locals: "var0": 2 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 45: Wasm opcode 0x20
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Scope:
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at wasm_B (0:45):
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- scope (global):
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- scope (local):
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locals: "var0": 2 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 47: Wasm opcode 0x4
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Scope:
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at wasm_B (0:47):
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- scope (global):
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- scope (local):
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locals: "var0": 2 (number)
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stack: "0": 2 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 49: Wasm opcode 0x20
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Scope:
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at wasm_B (0:49):
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- scope (global):
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- scope (local):
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locals: "var0": 2 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 51: Wasm opcode 0x41
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Scope:
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at wasm_B (0:51):
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- scope (global):
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- scope (local):
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locals: "var0": 2 (number)
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stack: "0": 2 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 53: Wasm opcode 0x6b
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Scope:
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at wasm_B (0:53):
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- scope (global):
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- scope (local):
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locals: "var0": 2 (number)
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stack: "0": 2 (number), "1": 1 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 54: Wasm opcode 0x21
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Scope:
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at wasm_B (0:54):
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- scope (global):
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- scope (local):
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locals: "var0": 2 (number)
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stack: "0": 1 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 38: Wasm opcode 0x1
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Scope:
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at wasm_A (0:38):
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- scope (global):
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- scope (local):
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stack:
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at wasm_B (0:56):
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- scope (global):
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- scope (local):
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locals: "var0": 1 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 39: Wasm opcode 0x1
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Scope:
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at wasm_A (0:39):
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- scope (global):
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- scope (local):
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stack:
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at wasm_B (0:56):
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- scope (global):
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- scope (local):
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locals: "var0": 1 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 45: Wasm opcode 0x20
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Scope:
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at wasm_B (0:45):
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- scope (global):
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- scope (local):
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locals: "var0": 1 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 47: Wasm opcode 0x4
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Scope:
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at wasm_B (0:47):
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- scope (global):
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- scope (local):
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locals: "var0": 1 (number)
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stack: "0": 1 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 49: Wasm opcode 0x20
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Scope:
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at wasm_B (0:49):
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- scope (global):
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- scope (local):
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locals: "var0": 1 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 51: Wasm opcode 0x41
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Scope:
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at wasm_B (0:51):
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- scope (global):
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- scope (local):
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locals: "var0": 1 (number)
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stack: "0": 1 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 53: Wasm opcode 0x6b
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Scope:
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at wasm_B (0:53):
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- scope (global):
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- scope (local):
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locals: "var0": 1 (number)
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stack: "0": 1 (number), "1": 1 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 54: Wasm opcode 0x21
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Scope:
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at wasm_B (0:54):
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- scope (global):
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- scope (local):
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locals: "var0": 1 (number)
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stack: "0": 0 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 38: Wasm opcode 0x1
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Scope:
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at wasm_A (0:38):
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- scope (global):
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- scope (local):
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stack:
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at wasm_B (0:56):
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- scope (global):
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- scope (local):
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locals: "var0": 0 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 39: Wasm opcode 0x1
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Scope:
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at wasm_A (0:39):
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- scope (global):
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- scope (local):
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stack:
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at wasm_B (0:56):
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- scope (global):
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- scope (local):
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locals: "var0": 0 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 45: Wasm opcode 0x20
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Scope:
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at wasm_B (0:45):
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- scope (global):
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- scope (local):
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locals: "var0": 0 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 47: Wasm opcode 0x4
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Scope:
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at wasm_B (0:47):
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- scope (global):
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- scope (local):
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locals: "var0": 0 (number)
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stack: "0": 0 (number)
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at (anonymous) (0:17):
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-- skipped
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Paused:
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Script wasm://wasm/0c10a5fe byte offset 61: Wasm opcode 0xb
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Scope:
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at wasm_B (0:61):
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- scope (global):
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- scope (local):
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locals: "var0": 0 (number)
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stack:
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at (anonymous) (0:17):
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-- skipped
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exports.main returned!
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Finished!
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