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Emit state information for internal breakpoints.

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This commit is contained in:
losfair 2019-10-14 20:23:10 +08:00
parent ba7e2b70ed
commit a525907c60
1 changed files with 30 additions and 1 deletions
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31
lib/singlepass-backend/src/codegen_x64.rs
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@ -18,7 +18,8 @@ use std::{
};
use wasmer_runtime_core::{
backend::{
sys::Memory, Backend, CacheGen, CompilerConfig, MemoryBoundCheckMode, RunnableModule, Token,
get_inline_breakpoint_size, sys::Memory, Architecture, Backend, CacheGen, CompilerConfig,
MemoryBoundCheckMode, RunnableModule, Token,
},
cache::{Artifact, Error as CacheError},
codegen::*,
@ -40,6 +41,11 @@ use wasmer_runtime_core::{
};
use wasmparser::{Operator, Type as WpType, TypeOrFuncType as WpTypeOrFuncType};
#[cfg(target_arch = "aarch64")]
static ARCH: Architecture = Architecture::Aarch64;
#[cfg(target_arch = "x86_64")]
static ARCH: Architecture = Architecture::X64;
#[cfg(target_arch = "x86_64")]
lazy_static! {
/// Performs a System V call to `target` with [stack_top..stack_base] as the argument list, from right to left.
@ -687,6 +693,28 @@ impl X64FunctionCode {
.insert(m.state.wasm_inst_offset, SuspendOffset::Trappable(offset));
}
fn mark_inline_breakpoint(
a: &mut Assembler,
m: &Machine,
fsm: &mut FunctionStateMap,
control_stack: &mut [ControlFrame],
) {
let state_diff_id = Self::get_state_diff(m, fsm, control_stack);
let offset = a.get_offset().0;
fsm.trappable_offsets.insert(
offset,
OffsetInfo {
end_offset: offset
+ get_inline_breakpoint_size(ARCH, Backend::Singlepass)
.expect("cannot get inline breakpoint size"),
activate_offset: offset,
diff_id: state_diff_id,
},
);
fsm.wasm_offset_to_target_offset
.insert(m.state.wasm_inst_offset, SuspendOffset::Trappable(offset));
}
/// Moves `loc` to a valid location for `div`/`idiv`.
fn emit_relaxed_xdiv(
a: &mut Assembler,
@ -1909,6 +1937,7 @@ impl FunctionCodeGenerator<CodegenError> for X64FunctionCode {
.as_mut()
.unwrap()
.insert(a.get_offset(), callback);
Self::mark_trappable(a, &self.machine, &mut self.fsm, &mut self.control_stack);
a.emit_inline_breakpoint(InlineBreakpointType::Middleware);
}
InternalEvent::FunctionBegin(_) | InternalEvent::FunctionEnd => {}