commit eeed22916b8292b12d21e46ba9d3a383d669d9ff
author WANG Xuerui <xen0n@gentoo.org> Thu Oct 06 16:55:00 2022 +0800
committer Laurent Vivier <laurent@vivier.eu> Fri Oct 21 16:37:36 2022 +0200
tree 8c0823b61a3d2e234282f747cef3800fab72eb6a
parent 0529245488865038344d64fff7ee05864d3d17f6

linux-user: Fix more MIPS n32 syscall ABI issues

In commit 80f0fe3a85 ("linux-user: Fix syscall parameter handling for
MIPS n32") the ABI problem regarding offset64 on MIPS n32 was fixed,
but still some cases remain where the n32 is incorrectly treated as any
other 32-bit ABI that passes 64-bit arguments in pairs of GPRs. Fix by
excluding TARGET_ABI_MIPSN32 from various TARGET_ABI_BITS == 32 checks.

Closes: https://gitlab.com/qemu-project/qemu/-/issues/1238
Signed-off-by: WANG Xuerui <xen0n@gentoo.org>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Andreas K. Hüttel <dilfridge@gentoo.org>
Cc: Joshua Kinard <kumba@gentoo.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Andreas K. Huettel <dilfridge@gentoo.org>
Message-Id: <20221006085500.290341-1-xen0n@gentoo.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

linux-user/syscall.c

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 2e954d8..8b2d39f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -11793,7 +11793,7 @@
         return -host_to_target_errno(ret);
 #endif
 
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
 
 #ifdef TARGET_NR_fadvise64_64
     case TARGET_NR_fadvise64_64:
@@ -11920,7 +11920,7 @@
         return get_errno(sys_gettid());
 #ifdef TARGET_NR_readahead
     case TARGET_NR_readahead:
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
         if (regpairs_aligned(cpu_env, num)) {
             arg2 = arg3;
             arg3 = arg4;
@@ -12612,7 +12612,7 @@
 #endif /* CONFIG_EVENTFD  */
 #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
     case TARGET_NR_fallocate:
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
         ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4),
                                   target_offset64(arg5, arg6)));
 #else
@@ -12623,7 +12623,7 @@
 #if defined(CONFIG_SYNC_FILE_RANGE)
 #if defined(TARGET_NR_sync_file_range)
     case TARGET_NR_sync_file_range:
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
 #if defined(TARGET_MIPS)
         ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
                                         target_offset64(arg5, arg6), arg7));
@@ -12645,7 +12645,7 @@
     case TARGET_NR_arm_sync_file_range:
 #endif
         /* This is like sync_file_range but the arguments are reordered */
-#if TARGET_ABI_BITS == 32
+#if TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32)
         ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
                                         target_offset64(arg5, arg6), arg2));
 #else