Add PowerPC LynxOS support

ld/emulparams/i386lynx.sh

@@ -1,9 +1,17 @@
-SCRIPT_NAME=i386lynx
-OUTPUT_FORMAT="coff-i386-lynx"
-# This is what LynxOS /lib/init1.o wants.
+SCRIPT_NAME=elf
+OUTPUT_FORMAT="elf32-i386"
 ENTRY=_main
-# following are dubious
-TARGET_PAGE_SIZE=0x1000
-TEXT_START_ADDR=0
+TEXT_BASE=0x0
+DYN_TEXT_BASE=0x00400000
+TEXT_START_ADDR="(DEFINED(_DYNAMIC) ? ${DYN_TEXT_BASE} : ${TEXT_BASE})"
+MAXPAGESIZE=0x1000
 NONPAGED_TEXT_START_ADDR=0x1000
 ARCH=i386
+MACHINE=
+NOP=0x9090
+TEMPLATE_NAME=elf32
+GENERATE_SHLIB_SCRIPT=yes
+ELF_INTERPRETER_NAME=\"/usr/lib/ld.so.1\"
+
+# Leave room of SIZEOF_HEADERS before text.
+EMBEDDED=

ld/emulparams/ppclynx.sh

@@ -0,0 +1,20 @@
+SCRIPT_NAME=elf
+OUTPUT_FORMAT="elf32-powerpc"
+TEXT_BASE=0x00002000
+DYN_TEXT_BASE=0x00400000
+TEXT_START_ADDR="(DEFINED(_DYNAMIC) ? ${DYN_TEXT_BASE} : ${TEXT_BASE})"
+MAXPAGESIZE=0x10000
+NONPAGED_TEXT_START_ADDR=0x1000
+ARCH=powerpc
+MACHINE=
+TEMPLATE_NAME=elf32
+GENERATE_SHLIB_SCRIPT=yes
+ELF_INTERPRETER_NAME=\"/usr/lib/ld.so.1\"
+
+# Leave room of SIZEOF_HEADERS before text.
+EMBEDDED=
+# PLT on PowerPC is generated at run-time.
+BSS_PLT=
+OTHER_READWRITE_SECTIONS="
+  .got1         ${RELOCATING-0} : { *(.got1) }
+  .got2         ${RELOCATING-0} : { *(.got2) }"