ref: 7f8bd359548ce61cad5011e44075d21e83d56314
parent: 5fe33fb80804cadc3c934337fde81af5b7d44243
author: Jacob Moody <moody@posixcafe.org>
date: Wed Mar 27 11:54:10 EDT 2024
9l: add -H6 for elf targeting kexec
--- a/sys/src/cmd/9l/asm.c
+++ b/sys/src/cmd/9l/asm.c
@@ -93,6 +93,7 @@
case 1:
case 2:
case 5:
+ case 6:
seek(cout, HEADR+textsize, 0);
break;
case 3:
@@ -125,6 +126,7 @@
case 1:
case 2:
case 5:
+ case 6:
seek(cout, HEADR+textsize+datsize, 0);
break;
case 3:
@@ -194,6 +196,7 @@
case 3:
break;
case 5:
+ case 6:
strnput("\177ELF", 4); /* e_ident */CPUT(2); /* class = 64 bit */
CPUT(2); /* data = MSB */
@@ -210,32 +213,49 @@
lput((0x40L<<16)|0x38L); /* Ehdr & Phdr sizes*/
lput((3L<<16)|0x40L); /* # Phdrs & Shdr size */
lput((3L<<16)|2L); /* # Shdrs & shdr string size */
- }
- else{- llput(0L);
- lput(0L); /* flags = PPC */
+ } else {+ llput(0L); /* offset to first shdr */
+ lput(0L); /* flags = PPC */
lput((0x40L<<16)|0x38L); /* Ehdr & Phdr sizes*/
- lput((3L<<16)|0L); /* # Phdrs & Shdr size */
- lput((3L<<16)|0L); /* # Shdrs & shdr string size */
+ if(HEADTYPE == 5)
+ lput((3L<<16)|0L); /* # Phdrs & Shdr size */
+ else
+ lput((2L<<16)|0L); /* # Phdrs & Shdr size */
+ lput((0L<<16)|0L); /* # Shdrs & shdr string size */
}
- lput(1L); /* text - type = PT_LOAD */
- lput(0x05L); /* protections = RX */
- llput(HEADR); /* file offset */
- llput(INITTEXT); /* vaddr */
- llput(INITTEXT); /* paddr */
- llput(textsize); /* file size */
- llput(textsize); /* memory size */
- llput(0x10000L); /* alignment */
-
- lput(1L); /* data - type = PT_LOAD */
- lput(0x07L); /* protections = RWX */
- llput(HEADR+textsize); /* file offset */
- llput(INITDAT); /* vaddr */
- llput(INITDAT); /* paddr */
- llput(datsize); /* file size */
- llput(datsize); /* memory size */
- llput(0x10000L); /* alignment */
+ if(HEADTYPE == 5){+ lput(1L); /* text - type = PT_LOAD */
+ lput(0x05L); /* protections = RX */
+ llput(HEADR); /* file offset */
+ llput(INITTEXT); /* vaddr */
+ llput(INITTEXT); /* paddr */
+ llput(textsize); /* file size */
+ llput(textsize); /* memory size */
+ llput(0x10000L); /* alignment */
+
+ lput(1L); /* data - type = PT_LOAD */
+ lput(0x07L); /* protections = RWX */
+ llput(HEADR+textsize); /* file offset */
+ llput(INITDAT); /* vaddr */
+ llput(INITDAT); /* paddr */
+ llput(datsize); /* file size */
+ llput(datsize); /* memory size */
+ llput(0x10000L); /* alignment */
+ } else {+ lput(1L); /* text + data - type = PT_LOAD */
+ lput(0x07L); /* protections = RWX */
+ llput(HEADR); /* file offset */
+ /*
+ * linux kexec shits the bed with high physical segments.
+ * These are not actually used, so we just grumble and comply.
+ * /
+ llput(INITTEXT&0xFFFFFFFF); /* vaddr */
+ llput(INITTEXT&0xFFFFFFFF); /* paddr */
+ llput(textsize+datsize); /* file size */
+ llput(textsize+datsize); /* memory size */
+ llput(0x100000L); /* alignment */
+ }
lput(0L); /* data - type = PT_NULL */
lput(0x04L); /* protections = R */
--- a/sys/src/cmd/9l/obj.c
+++ b/sys/src/cmd/9l/obj.c
@@ -168,9 +168,18 @@
if(INITTEXT == -1)
INITTEXT = 0x00400000L+HEADR;
if(INITDAT == -1)
- INITDAT = 0x10000000;
+ INITDAT = 0;
if(INITRND == -1)
- INITRND = 0;
+ INITRND = 0x10000;
+ break;
+ case 6: /* bootable elf executable */
+ HEADR = rnd(0x40L+3*0x38L, 16);
+ if(INITTEXT == -1)
+ INITTEXT = 0x00400000L+HEADR;
+ if(INITDAT == -1)
+ INITDAT = 0;
+ if(INITRND == -1)
+ INITRND = 0x100000;
break;
}
if(INITDAT != 0 && INITRND != 0)