git: e22f5ce2bf4c - main - bhyve: add basl support for int values

The branch main has been updated by corvink:

URL: https://cgit.FreeBSD.org/src/commit/?id=e22f5ce2bf4c1a53a1551ae855f42d582eeda20e

commit e22f5ce2bf4c1a53a1551ae855f42d582eeda20e
Author:     Corvin Köhne <corvink@FreeBSD.org>
AuthorDate: 2022-11-04 12:48:13 +0000
Commit:     Corvin Köhne <corvink@FreeBSD.org>
CommitDate: 2022-11-15 07:27:07 +0000

    bhyve: add basl support for int values
    
    In upcoming commits, bhyve will build some ACPI tables by it's own.
    Therefore, it should be capable of appending int values to ACPI tables.
    
    Reviewed by:            jhb, markj (older version)
    Approved by:            manu (mentor)
    MFC after:              2 weeks
    Sponsored by:           Beckhoff Automation GmbH & Co. KG
    Differential Revision:  https://reviews.freebsd.org/D36987
---
 usr.sbin/bhyve/basl.c | 23 +++++++++++++++++++++++
 usr.sbin/bhyve/basl.h |  1 +
 2 files changed, 24 insertions(+)

diff --git a/usr.sbin/bhyve/basl.c b/usr.sbin/bhyve/basl.c
index 655c6e509dc4..b3a561f51571 100644
--- a/usr.sbin/bhyve/basl.c
+++ b/usr.sbin/bhyve/basl.c
@@ -33,6 +33,17 @@ struct basl_table {
 static STAILQ_HEAD(basl_table_list, basl_table) basl_tables = STAILQ_HEAD_INITIALIZER(
     basl_tables);
 
+static __inline void
+basl_le_enc(void *pp, uint64_t val, size_t len)
+{
+	char buf[8];
+
+	assert(len <= 8);
+
+	le64enc(buf, val);
+	memcpy(pp, buf, len);
+}
+
 static int
 basl_dump_table(const struct basl_table *const table, const bool mem)
 {
@@ -145,6 +156,18 @@ basl_table_append_bytes(struct basl_table *const table, const void *const bytes,
 	return (0);
 }
 
+int
+basl_table_append_int(struct basl_table *const table, const uint64_t val,
+    const uint8_t size)
+{
+	char buf[8];
+
+	assert(size <= sizeof(val));
+
+	basl_le_enc(buf, val, size);
+	return (basl_table_append_bytes(table, buf, size));
+}
+
 int
 basl_table_create(struct basl_table **const table, struct vmctx *ctx,
     const uint8_t *const name, const uint32_t alignment,
diff --git a/usr.sbin/bhyve/basl.h b/usr.sbin/bhyve/basl.h
index f6809a473ff4..3ce33dea63e0 100644
--- a/usr.sbin/bhyve/basl.h
+++ b/usr.sbin/bhyve/basl.h
@@ -32,5 +32,6 @@ int basl_finish(void);
 int basl_init(void);
 int basl_table_append_bytes(struct basl_table *table, const void *bytes,
     uint32_t len);
+int basl_table_append_int(struct basl_table *table, uint64_t val, uint8_t size);
 int basl_table_create(struct basl_table **table, struct vmctx *ctx,
     const uint8_t *name, uint32_t alignment, uint32_t off);