git: ea4dea83944a - main - LinuxKPI: add sign_extend32()

[Bjoern A. Zeeb]

The branch main has been updated by bz:

URL: https://cgit.FreeBSD.org/src/commit/?id=ea4dea83944ac6334d31e0364dd674eda250adde

commit ea4dea83944ac6334d31e0364dd674eda250adde
Author:     Bjoern A. Zeeb <bz at FreeBSD.org>
AuthorDate: 2021-07-01 13:14:19 +0000
Commit:     Bjoern A. Zeeb <bz at FreeBSD.org>
CommitDate: 2021-07-27 15:03:38 +0000

    LinuxKPI: add sign_extend32()
    
    Add sign_extend32() replicating the 64 version.  This is needed by
    the rtw88 driver.
    
    MFC after:      10 days
    Reviewed by:    imp, emaste, hselasky
    Differential Revision: https://reviews.freebsd.org/D30979
---
 sys/compat/linuxkpi/common/include/linux/bitops.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/linux/bitops.h b/sys/compat/linuxkpi/common/include/linux/bitops.h
index 49bfc4cc7414..0d7ab376e02d 100644
--- a/sys/compat/linuxkpi/common/include/linux/bitops.h
+++ b/sys/compat/linuxkpi/common/include/linux/bitops.h
@@ -412,4 +412,12 @@ sign_extend64(uint64_t value, int index)
 	return ((int64_t)(value << shift) >> shift);
 }
 
+static inline uint32_t
+sign_extend32(uint32_t value, int index)
+{
+	uint8_t shift = 31 - index;
+
+	return ((int32_t)(value << shift) >> shift);
+}
+
 #endif	/* _LINUX_BITOPS_H_ */