Module Name: src Committed By: martin Date: Thu Mar 1 17:15:14 UTC 2018
Modified Files: src/lib/libc/arch/powerpc [netbsd-8]: genassym.cf src/lib/libc/arch/powerpc/gen [netbsd-8]: swapcontext.S Log Message: Pull up following revision(s) (requested by uwe in ticket #596): lib/libc/arch/powerpc/genassym.cf: revision 1.5 lib/libc/arch/powerpc/gen/swapcontext.S: revision 1.8 PIC code clobbers %r30 so we need to update the saved oucp with caller's %r30 manually. Makes old context happy when it needs to do more function calls after restore. PIC code clobbers %r30 so we need to update the saved oucp with caller's %r30 manually. Makes old context happy when it needs to do more function calls after restore. (oops, forgot to commit this along with swapcontext.S) To generate a diff of this commit: cvs rdiff -u -r1.4 -r1.4.18.1 src/lib/libc/arch/powerpc/genassym.cf cvs rdiff -u -r1.7 -r1.7.18.1 src/lib/libc/arch/powerpc/gen/swapcontext.S Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/lib/libc/arch/powerpc/genassym.cf diff -u src/lib/libc/arch/powerpc/genassym.cf:1.4 src/lib/libc/arch/powerpc/genassym.cf:1.4.18.1 --- src/lib/libc/arch/powerpc/genassym.cf:1.4 Fri Aug 30 21:28:59 2013 +++ src/lib/libc/arch/powerpc/genassym.cf Thu Mar 1 17:15:13 2018 @@ -1,4 +1,4 @@ -# $NetBSD: genassym.cf,v 1.4 2013/08/30 21:28:59 matt Exp $ +# $NetBSD: genassym.cf,v 1.4.18.1 2018/03/01 17:15:13 martin Exp $ # # Copyright (c) 2001 The NetBSD Foundation, Inc. @@ -44,6 +44,7 @@ define CALLFRAME_R31 offsetof(struct cal define UC_GREGS_R1 offsetof(ucontext_t, uc_mcontext.__gregs[_REG_R1]) define UC_GREGS_R3 offsetof(ucontext_t, uc_mcontext.__gregs[_REG_R3]) +define UC_GREGS_R30 offsetof(ucontext_t, uc_mcontext.__gregs[_REG_R30]) define UC_GREGS_PC offsetof(ucontext_t, uc_mcontext.__gregs[_REG_PC]) define SIG_BLOCK SIG_BLOCK Index: src/lib/libc/arch/powerpc/gen/swapcontext.S diff -u src/lib/libc/arch/powerpc/gen/swapcontext.S:1.7 src/lib/libc/arch/powerpc/gen/swapcontext.S:1.7.18.1 --- src/lib/libc/arch/powerpc/gen/swapcontext.S:1.7 Thu Sep 12 15:36:15 2013 +++ src/lib/libc/arch/powerpc/gen/swapcontext.S Thu Mar 1 17:15:14 2018 @@ -1,4 +1,4 @@ -/* $NetBSD: swapcontext.S,v 1.7 2013/09/12 15:36:15 joerg Exp $ */ +/* $NetBSD: swapcontext.S,v 1.7.18.1 2018/03/01 17:15:14 martin Exp $ */ /*- * Copyright (c) 2001 The NetBSD Foundation, Inc. @@ -32,7 +32,7 @@ #include "SYS.h" #include "assym.h" -__RCSID("$NetBSD: swapcontext.S,v 1.7 2013/09/12 15:36:15 joerg Exp $") +__RCSID("$NetBSD: swapcontext.S,v 1.7.18.1 2018/03/01 17:15:14 martin Exp $") #define XCALLFRAMELEN (((2+3)*SZREG + CALLFRAMELEN - 1) & -CALLFRAMELEN) #define XCALLFRAME_R30 (XCALLFRAMELEN-1*SZREG) @@ -57,6 +57,10 @@ ENTRY(swapcontext) stw %r0,UC_GREGS_PC(%r11) # pc <- lr addi %r0,%r1,XCALLFRAMELEN stw %r0,UC_GREGS_R1(%r11) # adjust sp +#ifdef __PIC__ + lwz %r0,XCALLFRAME_R30(%r1) + stw %r0,UC_GREGS_R30(%r11) # caller's r30 +#endif lwz %r3,XCALLFRAME_UCP(%r1) # load ucp bl PIC_PLT(_C_LABEL(setcontext)) # setcontext(ucp) 1: