diff options
Diffstat (limited to 'compiler/cgen.nim')
| -rw-r--r-- | compiler/cgen.nim | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/compiler/cgen.nim b/compiler/cgen.nim index e2f3b5ab0..41f380d1b 100644 --- a/compiler/cgen.nim +++ b/compiler/cgen.nim @@ -295,6 +295,7 @@ proc postStmtActions(p: BProc) {.inline.} = proc accessThreadLocalVar(p: BProc, s: PSym) proc emulatedThreadVars(): bool {.inline.} +proc genProc(m: BModule, prc: PSym) include "ccgtypes.nim" @@ -574,7 +575,6 @@ proc fixLabel(p: BProc, labl: TLabel) = proc genVarPrototype(m: BModule, sym: PSym) proc requestConstImpl(p: BProc, sym: PSym) -proc genProc(m: BModule, prc: PSym) proc genStmts(p: BProc, t: PNode) proc expr(p: BProc, n: PNode, d: var TLoc) proc genProcPrototype(m: BModule, sym: PSym) @@ -954,8 +954,7 @@ proc genMainProc(m: BModule) = "\tsystemInit();$N" & "$1" & "$2" & - "$3" & - "$4" + "$3" MainProcs = "\tNimMain();$N" @@ -963,10 +962,19 @@ proc genMainProc(m: BModule) = MainProcsWithResult = MainProcs & "\treturn nim_program_result;$N" + # The use of a volatile function pointer to call NimMainInner + # prevents inlining of the NimMainInner function and dependent + # functions, which might otherwise merge their stack frames. NimMainBody = - "N_CDECL(void, NimMain)(void) {$N" & + "N_CDECL(void, NimMainInner)(void) {$N" & "\tPreMain();$N" & "$1" & + "}$N$N" & + "N_CDECL(void, NimMain)(void) {$N" & + "\tvoid (*volatile inner)();$N" & + "\tinner = NimMainInner;$N" & + "$2" & + "\t(*inner)();$N" & "}$N$N" PosixNimMain = @@ -1034,14 +1042,15 @@ proc genMainProc(m: BModule) = if optEndb in gOptions: gBreakpoints.app(m.genFilenames) - let initStackBottomCall = if emulatedThreadVars() or - platform.targetOS == osStandalone: "".toRope - else: ropecg(m, "\t#initStackBottom();$N") + let initStackBottomCall = + if emulatedThreadVars() or + platform.targetOS == osStandalone: "".toRope + else: ropecg(m, "\t#initStackBottomWith((void *)&inner);$N") inc(m.labels) appcg(m, m.s[cfsProcs], "void PreMain() {$N" & PreMainBody & "}$N$N", [ - mainDatInit, initStackBottomCall, gBreakpoints, otherModsInit]) + mainDatInit, gBreakpoints, otherModsInit]) - appcg(m, m.s[cfsProcs], nimMain, [mainModInit, toRope(m.labels)]) + appcg(m, m.s[cfsProcs], nimMain, [mainModInit, initStackBottomCall, toRope(m.labels)]) if optNoMain notin gGlobalOptions: appcg(m, m.s[cfsProcs], otherMain, []) |