Allow acpidump(8) to disassemble SSDT AML data

[Nicolas Joly <njoly%pasteur.fr@localhost>]

Hi,

On my DELL Optiplex 740, the ACPI tables include a SSDT which contains
AML datas; but acpidump(8) does not support disassembling it, even if
it can be handled just like the common DSDT table.

The attached patch, should fix it.

Does it looks ok ?

SSDT: Length=650, Revision=1, Checksum=55,
        OEMID=PTLTD, OEM Table ID=POWERNOW, OEM Revision=0x1,
        Creator ID= LTP, Creator Revision=0x1
 */
DefinitionBlock ("acpi_dst.aml", "SSDT", 0x1, "PTLTD", "POWERNOW", 0x1)
{
Scope(\_PR.CPU0) {
    Name(_PCT, Package(0x02) {
        Buffer(0x11) {0x82, 0xc, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0
x0, 0x0, 0x0, 0x0, 0x79, 0x0 },
        Buffer(0x11) {0x82, 0xc, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0
x0, 0x0, 0x0, 0x0, 0x79, 0x0 },
    })
[...]

-- 
Nicolas Joly

Biological Software and Databanks.
Institut Pasteur, Paris.

Index: usr.sbin/acpitools/acpidump/acpi.c
===================================================================
RCS file: /cvsroot/src/usr.sbin/acpitools/acpidump/acpi.c,v
retrieving revision 1.4
diff -u -p -r1.4 acpi.c
--- usr.sbin/acpitools/acpidump/acpi.c  13 Feb 2008 18:59:18 -0000      1.4
+++ usr.sbin/acpitools/acpidump/acpi.c  14 Sep 2008 00:15:35 -0000
@@ -76,17 +76,21 @@ acpi_trim_string(char *s, size_t length)
 static void
 acpi_print_dsdt_definition(void)
 {
+       char    signature[4 + 1];
        char    oemid[6 + 1];
        char    oemtblid[8 + 1];
 
+       acpi_trim_string((char *)dsdt_header.signature, sizeof(signature) - 1);
        acpi_trim_string((char *)dsdt_header.oemid, sizeof(oemid) - 1);
        acpi_trim_string((char *)dsdt_header.oemtblid, sizeof(oemtblid) - 1);
+       (void)strlcpy(signature, (const char *)dsdt_header.signature,
+           sizeof(signature));
        (void)strlcpy(oemid, (const char *)dsdt_header.oemid, sizeof(oemid));
        (void)strlcpy(oemtblid, (const char *)dsdt_header.oemtblid,
            sizeof(oemtblid));
 
        printf("DefinitionBlock (\"%s\", \"%s\", 0x%x, \"%s\", \"%s\", 0x%x)",
-           "acpi_dst.aml", "DSDT", dsdt_header.rev, oemid, oemtblid,
+           "acpi_dst.aml", signature, dsdt_header.rev, oemid, oemtblid,
            dsdt_header.oemrev);
 }
 
@@ -199,7 +203,8 @@ acpi_print_sdt(struct ACPIsdt *sdp)
        acpi_print_string((const char *)sdp->creator, 4);
        printf(", Creator Revision=0x%x\n", sdp->crerev);
        printf(END_COMMENT);
-       if (!memcmp(sdp->signature, "DSDT", 4)) {
+       if (!memcmp(sdp->signature, "DSDT", 4) ||
+           !memcmp(sdp->signature, "SSDT", 4)) {
                memcpy(&dsdt_header, sdp, sizeof(dsdt_header));
        }
 }
@@ -361,6 +366,8 @@ acpi_handle_rsdt(struct ACPIsdt *rsdp)
                }
                if (!memcmp(sdp->signature, "FACP", 4)) {
                        acpi_handle_facp((struct FACPbody *) sdp->body);
+               } else if (!memcmp(sdp->signature, "SSDT", 4)) {
+                       acpi_handle_dsdt(sdp);
                } else {
                        acpi_print_sdt(sdp);
                }