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pull out 'rich unwind' gathering path, which takes a 'concrete unwind'

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and produces a full unwind with debug-info-derived inline frames
This commit is contained in:
Ryan Fleury
2024-06-13 15:18:29 -07:00
parent bf2d5640fa
commit 2c7d15de59
7 changed files with 131 additions and 79 deletions
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src/df/core/df_core.c
+59 -1
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@@ -3654,6 +3654,58 @@ df_module_from_thread_candidates(DF_Entity *thread, DF_EntityList *candidates)
return module;
}
internal DF_Unwind
df_unwind_from_ctrl_unwind(Arena *arena, DI_Scope *di_scope, DF_Entity *process, CTRL_Unwind *base_unwind)
{
Temp scratch = scratch_begin(&arena, 1);
DF_UnwindFrameList rich_frames_list = {0};
Architecture arch = df_architecture_from_entity(process);
for(U64 base_frame_idx = 0; base_frame_idx < base_unwind->frames.count; base_frame_idx += 1)
{
CTRL_UnwindFrame *base_frame = &base_unwind->frames.v[base_frame_idx];
U64 rip_vaddr = regs_rip_from_arch_block(arch, base_frame->regs);
DF_Entity *module = df_module_from_process_vaddr(process, rip_vaddr);
U64 rip_voff = df_voff_from_vaddr(module, rip_vaddr);
DI_Key dbgi_key = df_dbgi_key_from_module(module);
RDI_Parsed *rdi = di_rdi_from_key(di_scope, &dbgi_key, 0);
RDI_Scope *scope = rdi_scope_from_voff(rdi, rip_voff);
// rjf: add rich frames for inlines
for(RDI_Scope *s = scope; s->inline_site_idx != 0; s = rdi_element_from_name_idx(rdi, Scopes, s->parent_scope_idx))
{
RDI_InlineSite *site = rdi_element_from_name_idx(rdi, InlineSites, s->inline_site_idx);
DF_UnwindFrameNode *n = push_array(scratch.arena, DF_UnwindFrameNode, 1);
SLLQueuePush(rich_frames_list.first, rich_frames_list.last, n);
rich_frames_list.count += 1;
n->v.regs = base_frame->regs;
n->v.rdi = rdi;
n->v.procedure = 0;
n->v.inline_site = site;
}
// rjf: add frame for concrete frame
DF_UnwindFrameNode *n = push_array(scratch.arena, DF_UnwindFrameNode, 1);
SLLQueuePush(rich_frames_list.first, rich_frames_list.last, n);
rich_frames_list.count += 1;
n->v.regs = base_frame->regs;
n->v.rdi = rdi;
n->v.procedure = rdi_element_from_name_idx(rdi, Procedures, scope->proc_idx);
n->v.inline_site = 0;
}
DF_Unwind result = {0};
{
result.frames.count = rich_frames_list.count;
result.frames.v = push_array(arena, DF_UnwindFrame, result.frames.count);
U64 idx = 0;
for(DF_UnwindFrameNode *n = rich_frames_list.first; n != 0; n = n->next, idx += 1)
{
MemoryCopyStruct(&result.frames.v[idx], &n->v);
}
}
scratch_end(scratch);
return result;
}
////////////////////////////////
//~ rjf: Entity -> Log Entities
@@ -5652,6 +5704,7 @@ df_ctrl_ctx_apply_overrides(DF_CtrlCtx *ctx, DF_CtrlCtx *overrides)
{
ctx->thread = overrides->thread;
ctx->unwind_count = overrides->unwind_count;
ctx->inline_unwind_count = overrides->inline_unwind_count;
}
}
@@ -7565,8 +7618,8 @@ df_core_begin_frame(Arena *arena, DF_CmdList *cmds, F32 dt)
//- rjf: debug control context management operations
case DF_CoreCmdKind_SelectThread:
{
MemoryZeroStruct(&df_state->ctrl_ctx);
df_state->ctrl_ctx.thread = params.entity;
df_state->ctrl_ctx.unwind_count = 0;
}break;
case DF_CoreCmdKind_SelectUnwind:
{
@@ -7575,6 +7628,11 @@ df_core_begin_frame(Arena *arena, DF_CmdList *cmds, F32 dt)
U64 max_unwind = unwind.frames.count ? unwind.frames.count-1 : 0;
U64 index = Clamp(0, params.index, max_unwind);
df_state->ctrl_ctx.unwind_count = index;
df_state->ctrl_ctx.inline_unwind_count = 0;
}break;
case DF_CoreCmdKind_SelectInlineUnwind:
{
}break;
case DF_CoreCmdKind_UpOneFrame:
{