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[src/trunk]: src/lib/libc/arch/alpha - Consistently use _REG_* defines from a...
details: https://anonhg.NetBSD.org/src/rev/9d746ff88bd8
branches: trunk
changeset: 941430:9d746ff88bd8
user: thorpej <thorpej%NetBSD.org@localhost>
date: Wed Oct 21 01:24:04 2020 +0000
description:
- Consistently use _REG_* defines from assym.h to mean register numbers,
not offsets (i.e. *8 to get the offset).
- Define and use SIZEOF_SIGINFO and UC_GREGS constants, rather than
hard-code magic numbers.
NFC -- same object code is generated.
diffstat:
lib/libc/arch/alpha/gen/__setjmp14.S | 28 ++++++------
lib/libc/arch/alpha/gen/swapcontext.S | 9 ++-
lib/libc/arch/alpha/genassym.cf | 76 ++++++++++++++++++----------------
lib/libc/arch/alpha/sys/__sigtramp2.S | 5 +-
lib/libc/arch/alpha/sys/getcontext.S | 7 +-
5 files changed, 66 insertions(+), 59 deletions(-)
diffs (236 lines):
diff -r 5ed96a68442f -r 9d746ff88bd8 lib/libc/arch/alpha/gen/__setjmp14.S
--- a/lib/libc/arch/alpha/gen/__setjmp14.S Tue Oct 20 23:27:57 2020 +0000
+++ b/lib/libc/arch/alpha/gen/__setjmp14.S Wed Oct 21 01:24:04 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: __setjmp14.S,v 1.7 2014/01/23 03:08:50 christos Exp $ */
+/* $NetBSD: __setjmp14.S,v 1.8 2020/10/21 01:24:05 thorpej Exp $ */
/*
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
@@ -46,16 +46,16 @@
LEAF(__setjmp14, 1)
LDGP(pv)
stq ra, SC_PC(a0) /* sc_pc = return address */
- stq s0, (SC_REGS+_REG_S0)(a0) /* saved bits of sc_regs */
- stq s1, (SC_REGS+_REG_S1)(a0)
- stq s2, (SC_REGS+_REG_S2)(a0)
- stq s3, (SC_REGS+_REG_S3)(a0)
- stq s4, (SC_REGS+_REG_S4)(a0)
- stq s5, (SC_REGS+_REG_S5)(a0)
- stq s6, (SC_REGS+_REG_S6)(a0)
- stq ra, (SC_REGS+_REG_RA)(a0)
- stq sp, (SC_REGS+_REG_SP)(a0)
- stq gp, (SC_REGS+_REG_GP)(a0)
+ stq s0, (SC_REGS+_REG_S0*8)(a0) /* saved bits of sc_regs */
+ stq s1, (SC_REGS+_REG_S1*8)(a0)
+ stq s2, (SC_REGS+_REG_S2*8)(a0)
+ stq s3, (SC_REGS+_REG_S3*8)(a0)
+ stq s4, (SC_REGS+_REG_S4*8)(a0)
+ stq s5, (SC_REGS+_REG_S5*8)(a0)
+ stq s6, (SC_REGS+_REG_S6*8)(a0)
+ stq ra, (SC_REGS+_REG_RA*8)(a0)
+ stq sp, (SC_REGS+_REG_SP*8)(a0)
+ stq gp, (SC_REGS+_REG_GP*8)(a0)
/*
* get signal information
@@ -74,7 +74,7 @@
CALL(__sigaltstack14)
ldl t0, 16(sp) /* offset of ss_flags */
lda sp, 24(sp) /* sizeof struct sigaltstack */
- ldq ra, (SC_REGS+_REG_RA)(s0) /* restore return address */
+ ldq ra, (SC_REGS+_REG_RA*8)(s0) /* restore return address */
blt v0, botch /* check for error */
and t0, 0x1, t0 /* get SA_ONSTACK flag */
stq t0, SC_ONSTACK(s0) /* and save it in sc_onstack */
@@ -82,10 +82,10 @@
* Restore old s0 and a0, and continue saving registers
*/
mov s0, a0
- ldq s0, (SC_REGS+_REG_S0)(a0)
+ ldq s0, (SC_REGS+_REG_S0*8)(a0)
ldq t0, magic /* sigcontext magic number */
- stq t0, (SC_REGS+_REG_UNIQUE)(a0) /* magic in sc_regs[31] */
+ stq t0, (SC_REGS+_REG_UNIQUE*8)(a0) /* magic in sc_regs[31] */
/* Too bad we can't check if we actually used FP */
ldiq t0, 1
stq t0, SC_OWNEDFP(a0) /* say we've used FP. */
diff -r 5ed96a68442f -r 9d746ff88bd8 lib/libc/arch/alpha/gen/swapcontext.S
--- a/lib/libc/arch/alpha/gen/swapcontext.S Tue Oct 20 23:27:57 2020 +0000
+++ b/lib/libc/arch/alpha/gen/swapcontext.S Wed Oct 21 01:24:04 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: swapcontext.S,v 1.3 2008/04/28 20:22:55 martin Exp $ */
+/* $NetBSD: swapcontext.S,v 1.4 2020/10/21 01:24:05 thorpej Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -30,6 +30,7 @@
*/
#include "SYS.h"
+#include "assym.h"
NESTED(swapcontext, 2, 24, ra, IM_RA|IM_A0|IM_A1, 0)
LDGP(pv)
@@ -41,10 +42,10 @@
ldq t0, (24-16)(sp)
bne v0, Lerr
ldq t1, (24- 8)(sp)
- stq t1, (56 + 26 * 8)(t0) /* Adjust saved RA */
- stq t1, (56 + 32 * 8)(t0) /* Adjust saved PC */
+ stq t1, (UC_GREGS + _REG_RA*8)(t0) /* Adjust saved RA */
+ stq t1, (UC_GREGS + _REG_PC*8)(t0) /* Adjust saved PC */
lda t1, 24(sp)
- stq t1, (56 + 30 * 8)(t0) /* Adjust saved SP */
+ stq t1, (UC_GREGS + _REG_SP*8)(t0) /* Adjust saved SP */
ldq a0, (24-24)(sp)
CALL(setcontext) /* setcontext(ucp) */
diff -r 5ed96a68442f -r 9d746ff88bd8 lib/libc/arch/alpha/genassym.cf
--- a/lib/libc/arch/alpha/genassym.cf Tue Oct 20 23:27:57 2020 +0000
+++ b/lib/libc/arch/alpha/genassym.cf Wed Oct 21 01:24:04 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: genassym.cf,v 1.2 2008/04/28 20:22:55 martin Exp $
+# $NetBSD: genassym.cf,v 1.3 2020/10/21 01:24:04 thorpej Exp $
#
# Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -34,41 +34,41 @@
include <ucontext.h>
include <signal.h>
-define _REG_V0 8*_REG_V0 /* 0 */
-define _REG_T0 8*_REG_T0 /* 1 */
-define _REG_T1 8*_REG_T1 /* 2 */
-define _REG_T2 8*_REG_T2 /* 3 */
-define _REG_T3 8*_REG_T3 /* 4 */
-define _REG_T4 8*_REG_T4 /* 5 */
-define _REG_T5 8*_REG_T5 /* 6 */
-define _REG_T6 8*_REG_T6 /* 7 */
-define _REG_T7 8*_REG_T7 /* 8 */
-define _REG_S0 8*_REG_S0 /* 9 */
-define _REG_S1 8*_REG_S1 /* 10 */
-define _REG_S2 8*_REG_S2 /* 11 */
-define _REG_S3 8*_REG_S3 /* 12 */
-define _REG_S4 8*_REG_S4 /* 13 */
-define _REG_S5 8*_REG_S5 /* 14 */
-define _REG_S6 8*_REG_S6 /* 15 */
-define _REG_A0 8*_REG_A0 /* 16 */
-define _REG_A1 8*_REG_A1 /* 17 */
-define _REG_A2 8*_REG_A2 /* 18 */
-define _REG_A3 8*_REG_A3 /* 19 */
-define _REG_A4 8*_REG_A4 /* 20 */
-define _REG_A5 8*_REG_A5 /* 21 */
-define _REG_T8 8*_REG_T8 /* 22 */
-define _REG_T9 8*_REG_T9 /* 23 */
-define _REG_T10 8*_REG_T10 /* 24 */
-define _REG_T11 8*_REG_T11 /* 25 */
-define _REG_RA 8*_REG_RA /* 26 */
-define _REG_T12 8*_REG_T12 /* 27 */
-define _REG_PV 8*_REG_PV /* 27 */
-define _REG_AT 8*_REG_AT /* 28 */
-define _REG_GP 8*_REG_GP /* 29 */
-define _REG_SP 8*_REG_SP /* 30 */
-define _REG_UNIQUE 8*_REG_UNIQUE /* 31 */
-define _REG_PC 8*_REG_PC /* 32 */
-define _REG_PS 8*_REG_PS /* 33 */
+define _REG_V0 _REG_V0 /* 0 */
+define _REG_T0 _REG_T0 /* 1 */
+define _REG_T1 _REG_T1 /* 2 */
+define _REG_T2 _REG_T2 /* 3 */
+define _REG_T3 _REG_T3 /* 4 */
+define _REG_T4 _REG_T4 /* 5 */
+define _REG_T5 _REG_T5 /* 6 */
+define _REG_T6 _REG_T6 /* 7 */
+define _REG_T7 _REG_T7 /* 8 */
+define _REG_S0 _REG_S0 /* 9 */
+define _REG_S1 _REG_S1 /* 10 */
+define _REG_S2 _REG_S2 /* 11 */
+define _REG_S3 _REG_S3 /* 12 */
+define _REG_S4 _REG_S4 /* 13 */
+define _REG_S5 _REG_S5 /* 14 */
+define _REG_S6 _REG_S6 /* 15 */
+define _REG_A0 _REG_A0 /* 16 */
+define _REG_A1 _REG_A1 /* 17 */
+define _REG_A2 _REG_A2 /* 18 */
+define _REG_A3 _REG_A3 /* 19 */
+define _REG_A4 _REG_A4 /* 20 */
+define _REG_A5 _REG_A5 /* 21 */
+define _REG_T8 _REG_T8 /* 22 */
+define _REG_T9 _REG_T9 /* 23 */
+define _REG_T10 _REG_T10 /* 24 */
+define _REG_T11 _REG_T11 /* 25 */
+define _REG_RA _REG_RA /* 26 */
+define _REG_T12 _REG_T12 /* 27 */
+define _REG_PV _REG_PV /* 27 */
+define _REG_AT _REG_AT /* 28 */
+define _REG_GP _REG_GP /* 29 */
+define _REG_SP _REG_SP /* 30 */
+define _REG_UNIQUE _REG_UNIQUE /* 31 */
+define _REG_PC _REG_PC /* 32 */
+define _REG_PS _REG_PS /* 33 */
define SC_ONSTACK offsetof(struct sigcontext, sc_onstack)
define SC_SP offsetof(struct sigcontext, sc_sp)
@@ -82,3 +82,7 @@
define SC_MASK offsetof(struct sigcontext, sc_mask)
define SC_RESERVED offsetof(struct sigcontext, sc_reserved)
define SC_XXX offsetof(struct sigcontext, sc_xxx)
+
+define SIZEOF_SIGINFO sizeof(siginfo_t)
+
+define UC_GREGS offsetof(ucontext_t, uc_mcontext.__gregs)
diff -r 5ed96a68442f -r 9d746ff88bd8 lib/libc/arch/alpha/sys/__sigtramp2.S
--- a/lib/libc/arch/alpha/sys/__sigtramp2.S Tue Oct 20 23:27:57 2020 +0000
+++ b/lib/libc/arch/alpha/sys/__sigtramp2.S Wed Oct 21 01:24:04 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: __sigtramp2.S,v 1.2 2006/11/08 21:16:40 drochner Exp $ */
+/* $NetBSD: __sigtramp2.S,v 1.3 2020/10/21 01:24:05 thorpej Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@@ -28,6 +28,7 @@
*/
#include "SYS.h"
+#include "assym.h"
/*
* The Alpha signal trampoline is invoked only to return from
@@ -40,7 +41,7 @@
*/
NESTED_NOPROFILE(__sigtramp_siginfo_2,0,0,ra,0,0)
ldgp gp,0(ra)
- lda a0,(128)(sp) /* get pointer to ucontext */
+ lda a0,(SIZEOF_SIGINFO)(sp) /* get pointer to ucontext */
CALLSYS_NOERROR(setcontext) /* and call setcontext() with it */
ldiq a0,-1 /* if that failed, set an exit code */
CALLSYS_NOERROR(exit) /* and call exit() */
diff -r 5ed96a68442f -r 9d746ff88bd8 lib/libc/arch/alpha/sys/getcontext.S
--- a/lib/libc/arch/alpha/sys/getcontext.S Tue Oct 20 23:27:57 2020 +0000
+++ b/lib/libc/arch/alpha/sys/getcontext.S Wed Oct 21 01:24:04 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: getcontext.S,v 1.3 2008/04/28 20:22:55 martin Exp $ */
+/* $NetBSD: getcontext.S,v 1.4 2020/10/21 01:24:05 thorpej Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -30,6 +30,7 @@
*/
#include "SYS.h"
+#include "assym.h"
#ifdef WEAK_ALIAS
WEAK_ALIAS(getcontext, _getcontext)
@@ -37,7 +38,7 @@
LEAF(_getcontext, 1)
CALLSYS_ERROR(getcontext)
- stq ra, (56 + 32 * 8)(a0) /* Adjust saved PC */
- stq zero, (56 + 0 * 8)(a0) /* Arrange for a return value of 0 */
+ stq ra, (UC_GREGS + _REG_PC*8)(a0) /* Adjust saved PC */
+ stq zero, (UC_GREGS + _REG_V0*8)(a0)/* Arrange for a rv of 0 */
RET
END(_getcontext)
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