97 lines
3.4 KiB
Diff
97 lines
3.4 KiB
Diff
From: Stephane Glondu <steph@glondu.net>
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Date: Sun, 16 Aug 2015 20:59:14 +0200
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Subject: Add a .file directive to generated .s files
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When no .file directive is given, the toolchain records the filename
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of the .o file, which is sometimes random, making generated objects
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non-deterministic.
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We use Location.input_name for adding .file directives to assembly
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files. Note: when the file is preprocessed, this reference holds the
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name of the temporary file. Hence, files compiled with -pp are still
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not deterministic.
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Bug-Debian: https://bugs.debian.org/795784
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Bug-Debian: https://bugs.debian.org/796336
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---
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asmcomp/amd64/emit.mlp | 1 +
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asmcomp/arm/emit.mlp | 1 +
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asmcomp/arm64/emit.mlp | 1 +
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asmcomp/i386/emit.mlp | 1 +
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asmcomp/power/emit.mlp | 1 +
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asmcomp/sparc/emit.mlp | 1 +
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6 files changed, 6 insertions(+)
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diff --git a/asmcomp/amd64/emit.mlp b/asmcomp/amd64/emit.mlp
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index d56d0f5..4d7aa30 100644
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--- a/asmcomp/amd64/emit.mlp
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+++ b/asmcomp/amd64/emit.mlp
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@@ -794,6 +794,7 @@ let data l =
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let begin_assembly() =
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reset_debug_info(); (* PR#5603 *)
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float_constants := [];
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+ ` .file \"{emit_string (String.escaped !Location.input_name)}\"\n`;
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if !Clflags.dlcode then begin
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(* from amd64.S; could emit these constants on demand *)
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if macosx then
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diff --git a/asmcomp/arm/emit.mlp b/asmcomp/arm/emit.mlp
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index 4948fb2..6f30fba 100644
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--- a/asmcomp/arm/emit.mlp
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+++ b/asmcomp/arm/emit.mlp
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@@ -892,6 +892,7 @@ let data l =
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let begin_assembly() =
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reset_debug_info();
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+ ` .file \"{emit_string (String.escaped !Location.input_name)}\"\n`;
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` .syntax unified\n`;
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begin match !arch with
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| ARMv4 -> ` .arch armv4t\n`
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diff --git a/asmcomp/arm64/emit.mlp b/asmcomp/arm64/emit.mlp
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index 750c2b2..5afbb8a 100644
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--- a/asmcomp/arm64/emit.mlp
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+++ b/asmcomp/arm64/emit.mlp
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@@ -942,6 +942,7 @@ let data l =
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let begin_assembly() =
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reset_debug_info();
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+ ` .file \"{emit_string (String.escaped !Location.input_name)}\"\n`;
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let lbl_begin = Compilenv.make_symbol (Some "data_begin") in
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` .data\n`;
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` .globl {emit_symbol lbl_begin}\n`;
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diff --git a/asmcomp/i386/emit.mlp b/asmcomp/i386/emit.mlp
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index 98df5f9..531150f 100644
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--- a/asmcomp/i386/emit.mlp
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+++ b/asmcomp/i386/emit.mlp
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@@ -986,6 +986,7 @@ let data l =
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let begin_assembly() =
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reset_debug_info(); (* PR#5603 *)
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float_constants := [];
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+ ` .file \"{emit_string (String.escaped !Location.input_name)}\"\n`;
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let lbl_begin = Compilenv.make_symbol (Some "data_begin") in
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` .data\n`;
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` .globl {emit_symbol lbl_begin}\n`;
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diff --git a/asmcomp/power/emit.mlp b/asmcomp/power/emit.mlp
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index 4344085..343132b 100644
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--- a/asmcomp/power/emit.mlp
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+++ b/asmcomp/power/emit.mlp
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@@ -887,6 +887,7 @@ let data l =
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let begin_assembly() =
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defined_functions := StringSet.empty;
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external_functions := StringSet.empty;
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+ ` .file \"{emit_string (String.escaped !Location.input_name)}\"\n`;
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(* Emit the beginning of the segments *)
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let lbl_begin = Compilenv.make_symbol (Some "data_begin") in
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emit_string data_space;
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diff --git a/asmcomp/sparc/emit.mlp b/asmcomp/sparc/emit.mlp
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index 877a3d5..7b041e9 100644
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--- a/asmcomp/sparc/emit.mlp
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+++ b/asmcomp/sparc/emit.mlp
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@@ -727,6 +727,7 @@ let data l =
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(* Beginning / end of an assembly file *)
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let begin_assembly() =
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+ ` .file \"{emit_string (String.escaped !Location.input_name)}\"\n`;
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let lbl_begin = Compilenv.make_symbol (Some "data_begin") in
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` .data\n`;
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` .global {emit_symbol lbl_begin}\n`;
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