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From a4a94cf963d74970ec053dc7ecaddc9f2dc24f6d Mon Sep 17 00:00:00 2001
From: Chris Packham <judge.packham@gmail.com>
Date: Thu, 24 Apr 2025 17:31:36 +1200
Subject: [PATCH] libgloss: rs6000: Add missing function prototypes
With recent GCC changes that have elevated some warnings to error by
default the rs6000 sim code errors out with:
libgloss/rs6000/sim-inbyte.c:22:7: error: implicit declaration of function 'read' [-Wimplicit-function-declaration]
libgloss/rs6000/sim-sbrk.c:26:7: error: implicit declaration of function 'brk'; did you mean 'sbrk'? [-Wimplicit-function-declaration]
libgloss/rs6000/sim-abort.c:19:3: error: implicit declaration of function 'write' [-Wimplicit-function-declaration]
libgloss/rs6000/sim-abort.c:20:3: error: implicit declaration of function 'exit' [-Wimplicit-function-declaration]
libgloss/rs6000/sim-print.c:29:3: error: implicit declaration of function 'write' [-Wimplicit-function-declaration]
libgloss/rs6000/mvme-print.c:34:11: error: implicit declaration of function '__pcrlf' [-Wimplicit-function-declaration]
libgloss/rs6000/mvme-print.c:44:19: error: implicit declaration of function '__outln' [-Wimplicit-function-declaration]
libgloss/rs6000/mvme-print.c:53:15: error: implicit declaration of function '__outstr' [-Wimplicit-function-declaration]
libgloss/rs6000/mbx-print.c:29:3: error: implicit declaration of function 'write' [-Wimplicit-function-declaration]
Add extern declarations to avoid the errors.
---
libgloss/rs6000/mbx-print.c | 2 ++
libgloss/rs6000/mvme-print.c | 3 +++
libgloss/rs6000/sim-abort.c | 3 +++
libgloss/rs6000/sim-inbyte.c | 1 +
libgloss/rs6000/sim-print.c | 2 ++
libgloss/rs6000/sim-sbrk.c | 1 +
6 files changed, 12 insertions(+)
diff --git a/libgloss/rs6000/mbx-print.c b/libgloss/rs6000/mbx-print.c
index 64472ee68..591ca2d3e 100644
--- a/libgloss/rs6000/mbx-print.c
+++ b/libgloss/rs6000/mbx-print.c
@@ -13,6 +13,8 @@
* they apply.
*/
+extern int write(int fd, const void *buf, unsigned int count);
+
/*
* print -- do a raw print of a string
*/
diff --git a/libgloss/rs6000/mvme-print.c b/libgloss/rs6000/mvme-print.c
index 8d195424e..d8f4c50d8 100644
--- a/libgloss/rs6000/mvme-print.c
+++ b/libgloss/rs6000/mvme-print.c
@@ -12,6 +12,9 @@
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
+extern void __pcrlf(void);
+extern void __outln(char *, char *);
+extern void __outstr(char *, char *);
/*
* write -- write some bytes to the output device.
diff --git a/libgloss/rs6000/sim-abort.c b/libgloss/rs6000/sim-abort.c
index e1b59cf19..931f886ed 100644
--- a/libgloss/rs6000/sim-abort.c
+++ b/libgloss/rs6000/sim-abort.c
@@ -14,6 +14,9 @@
* they apply.
*/
+extern int write(int fd, const void *buf, unsigned int count);
+extern void exit(int status);
+
void abort(void)
{
write (2, "Abort called.\n", sizeof("Abort called.\n")-1);
diff --git a/libgloss/rs6000/sim-inbyte.c b/libgloss/rs6000/sim-inbyte.c
index 787b68976..fe1ac2a8b 100644
--- a/libgloss/rs6000/sim-inbyte.c
+++ b/libgloss/rs6000/sim-inbyte.c
@@ -13,6 +13,7 @@
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
+extern int read(int fd, void *buf, unsigned int count);
int
inbyte ()
diff --git a/libgloss/rs6000/sim-print.c b/libgloss/rs6000/sim-print.c
index c0b9adced..49596aff6 100644
--- a/libgloss/rs6000/sim-print.c
+++ b/libgloss/rs6000/sim-print.c
@@ -13,6 +13,8 @@
* they apply.
*/
+extern int write(int fd, const void *buf, unsigned int count);
+
/*
* print -- do a raw print of a string
*/
diff --git a/libgloss/rs6000/sim-sbrk.c b/libgloss/rs6000/sim-sbrk.c
index 5c8bd6522..0bbfe334b 100644
--- a/libgloss/rs6000/sim-sbrk.c
+++ b/libgloss/rs6000/sim-sbrk.c
@@ -13,6 +13,7 @@
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
+extern int brk(void *addr);
extern char _end[];
static char *curbrk = _end;
--
2.49.0
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