diff options
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/cgen.nim | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/compiler/cgen.nim b/compiler/cgen.nim index 68431bd96..315b55801 100644 --- a/compiler/cgen.nim +++ b/compiler/cgen.nim @@ -949,12 +949,23 @@ proc genFilenames(m: BModule): PRope = proc genMainProc(m: BModule) = const + # The use of a volatile function pointer to call Pre/NimMainInner + # prevents inlining of the NimMainInner function and dependent + # functions, which might otherwise merge their stack frames. PreMainBody = - "\tsystemDatInit();$N" & + "void PreMainInner() {$N" & "\tsystemInit();$N" & "$1" & "$2" & - "$3" + "$3" & + "}$N$N" & + "void PreMain() {$N" & + "\tvoid (*volatile inner)();$N" & + "\tsystemDatInit();$N" & + "\tinner = PreMainInner;$N" & + "$4" & + "\t(*inner)();$N" & + "}$N$N" MainProcs = "\tNimMain();$N" @@ -962,9 +973,6 @@ proc genMainProc(m: BModule) = MainProcsWithResult = MainProcs & "\treturn nim_program_result;$N" - # The use of a volatile function pointer to call NimMainInner - # prevents inlining of the NimMainInner function and dependent - # functions, which might otherwise merge their stack frames. NimMainBody = "N_CDECL(void, NimMainInner)(void) {$N" & "$1" & @@ -1047,8 +1055,8 @@ proc genMainProc(m: BModule) = platform.targetOS == osStandalone: "".toRope else: ropecg(m, "\t#initStackBottomWith((void *)&inner);$N") inc(m.labels) - appcg(m, m.s[cfsProcs], "void PreMain() {$N" & PreMainBody & "}$N$N", [ - mainDatInit, gBreakpoints, otherModsInit]) + appcg(m, m.s[cfsProcs], PreMainBody, [ + mainDatInit, gBreakpoints, otherModsInit, initStackBottomCall]) appcg(m, m.s[cfsProcs], nimMain, [mainModInit, initStackBottomCall, toRope(m.labels)]) if optNoMain notin gGlobalOptions: |