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Fix Plan9 alignment

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-12-19 17:02:25 +01:00
parent 70e8145a7b
commit 239ab5f048
1 changed files with 10 additions and 8 deletions
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18
grub-core/loader/i386/pc/plan9.c
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@ -36,6 +36,7 @@ static struct grub_relocator *rel;
static grub_uint32_t eip = 0xffffffff;
#define GRUB_PLAN9_TARGET 0x100000
#define GRUB_PLAN9_ALIGN 4096
#define GRUB_PLAN9_CONFIG_ADDR 0x001200
#define GRUB_PLAN9_CONFIG_PATH_SIZE 0x000040
#define GRUB_PLAN9_CONFIG_MAGIC "ZORT 0\r\n"
@ -121,10 +122,10 @@ grub_cmd_plan9 (grub_command_t cmd __attribute__ ((unused)),
goto fail;
}
memsize = sizeof (hdr);
memsize += ALIGN_UP (grub_be_to_cpu32 (hdr.text_size), 16);
memsize += ALIGN_UP (grub_be_to_cpu32 (hdr.data_size), 16);
memsize += ALIGN_UP(grub_be_to_cpu32 (hdr.bss_size), 16);
memsize = ALIGN_UP (grub_be_to_cpu32 (hdr.text_size) + sizeof (hdr),
GRUB_PLAN9_ALIGN);
memsize += ALIGN_UP (grub_be_to_cpu32 (hdr.data_size), GRUB_PLAN9_ALIGN);
memsize += ALIGN_UP(grub_be_to_cpu32 (hdr.bss_size), GRUB_PLAN9_ALIGN);
eip = grub_be_to_cpu32 (hdr.entry_addr) & 0xfffffff;
/* path */
@ -174,8 +175,9 @@ grub_cmd_plan9 (grub_command_t cmd __attribute__ ((unused)),
!= (grub_ssize_t) grub_be_to_cpu32 (hdr.text_size))
goto fail;
ptr += grub_be_to_cpu32 (hdr.text_size);
padsize = ALIGN_UP (grub_be_to_cpu32 (hdr.text_size), 16)
- grub_be_to_cpu32 (hdr.text_size);
padsize = ALIGN_UP (grub_be_to_cpu32 (hdr.text_size) + sizeof (hdr),
GRUB_PLAN9_ALIGN) - grub_be_to_cpu32 (hdr.text_size)
- sizeof (hdr);
grub_memset (ptr, 0, padsize);
ptr += padsize;
@ -184,12 +186,12 @@ grub_cmd_plan9 (grub_command_t cmd __attribute__ ((unused)),
!= (grub_ssize_t) grub_be_to_cpu32 (hdr.data_size))
goto fail;
ptr += grub_be_to_cpu32 (hdr.data_size);
padsize = ALIGN_UP (grub_be_to_cpu32 (hdr.data_size), 16)
padsize = ALIGN_UP (grub_be_to_cpu32 (hdr.data_size), GRUB_PLAN9_ALIGN)
- grub_be_to_cpu32 (hdr.data_size);
grub_memset (ptr, 0, padsize);
ptr += padsize;
grub_memset (ptr, 0, ALIGN_UP(grub_be_to_cpu32 (hdr.bss_size), 16));
grub_memset (ptr, 0, ALIGN_UP(grub_be_to_cpu32 (hdr.bss_size), GRUB_PLAN9_ALIGN));
grub_loader_set (grub_plan9_boot, grub_plan9_unload, 1);
return GRUB_ERR_NONE;