From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 6 May 2024 03:02:30 +0200
Subject: Adding upstream version 4.19.249.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/powerpc/kernel/sys_ppc32.c | 119 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 arch/powerpc/kernel/sys_ppc32.c

(limited to 'arch/powerpc/kernel/sys_ppc32.c')

diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
new file mode 100644
index 000000000..bdf58ba1a
--- /dev/null
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -0,0 +1,119 @@
+/*
+ * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
+ *
+ * Copyright (C) 2001 IBM
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * These routines maintain argument size conversion between 32bit and 64bit
+ * environment.
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fs.h> 
+#include <linux/mm.h> 
+#include <linux/file.h> 
+#include <linux/signal.h>
+#include <linux/resource.h>
+#include <linux/times.h>
+#include <linux/smp.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/poll.h>
+#include <linux/personality.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/in.h>
+#include <linux/syscalls.h>
+#include <linux/unistd.h>
+#include <linux/sysctl.h>
+#include <linux/binfmts.h>
+#include <linux/security.h>
+#include <linux/compat.h>
+#include <linux/ptrace.h>
+#include <linux/elf.h>
+#include <linux/ipc.h>
+#include <linux/slab.h>
+
+#include <asm/ptrace.h>
+#include <asm/types.h>
+#include <linux/uaccess.h>
+#include <asm/unistd.h>
+#include <asm/time.h>
+#include <asm/mmu_context.h>
+#include <asm/ppc-pci.h>
+#include <asm/syscalls.h>
+#include <asm/switch_to.h>
+
+unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
+			  unsigned long prot, unsigned long flags,
+			  unsigned long fd, unsigned long pgoff)
+{
+	/* This should remain 12 even if PAGE_SIZE changes */
+	return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
+}
+
+/* 
+ * long long munging:
+ * The 32 bit ABI passes long longs in an odd even register pair.
+ */
+
+compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
+			     u32 reg6, u32 poshi, u32 poslo)
+{
+	return ksys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
+}
+
+compat_ssize_t compat_sys_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count,
+			      u32 reg6, u32 poshi, u32 poslo)
+{
+	return ksys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
+}
+
+compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
+{
+	return ksys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
+}
+
+asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
+				unsigned long high, unsigned long low)
+{
+	return ksys_truncate(path, (high << 32) | low);
+}
+
+asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
+				     u32 lenhi, u32 lenlo)
+{
+	return ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
+			     ((loff_t)lenhi << 32) | lenlo);
+}
+
+asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
+				 unsigned long low)
+{
+	return ksys_ftruncate(fd, (high << 32) | low);
+}
+
+long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
+		     size_t len, int advice)
+{
+	return ksys_fadvise64_64(fd, (u64)offset_high << 32 | offset_low, len,
+				 advice);
+}
+
+asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
+				   unsigned offset_hi, unsigned offset_lo,
+				   unsigned nbytes_hi, unsigned nbytes_lo)
+{
+	loff_t offset = ((loff_t)offset_hi << 32) | offset_lo;
+	loff_t nbytes = ((loff_t)nbytes_hi << 32) | nbytes_lo;
+
+	return ksys_sync_file_range(fd, offset, nbytes, flags);
+}
-- 
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