motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-08 18:23:57 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

Userspace guest address offsetting

Browse source 
Re-implement GUEST_BASE support.
Offset guest ddress space by default if the guest binary contains
regions below the host mmap_min_addr.
Implement support for i386, x86-64 and arm hosts.

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Paul Brook 2009-07-17 12:48:08 +01:00
parent a9ff9df188
commit 379f6698d7
13 changed files with 206 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

34
tcg/arm/tcg-target.c
View file

@ -990,7 +990,22 @@ static inline void tcg_out_qemu_ld(TCGContext *s, int cond,
# endif
*label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2;
#else
#else /* !CONFIG_SOFTMMU */
if (GUEST_BASE) {
uint32_t offset = GUEST_BASE;
int i;
int rot;
while (offset) {
i = ctz32(offset) & ~1;
rot = ((32 - i) << 7) & 0xf00;
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
((offset >> i) & 0xff) | rot);
addr_reg = 8;
offset &= ~(0xff << i);
}
}
switch (opc) {
case 0:
tcg_out_ld8_12(s, COND_AL, data_reg, addr_reg, 0);
@ -1200,7 +1215,22 @@ static inline void tcg_out_qemu_st(TCGContext *s, int cond,
# endif
*label_ptr += ((void *) s->code_ptr - (void *) label_ptr - 8) >> 2;
#else
#else /* !CONFIG_SOFTMMU */
if (GUEST_BASE) {
uint32_t offset = GUEST_BASE;
int i;
int rot;
while (offset) {
i = ctz32(offset) & ~1;
rot = ((32 - i) << 7) & 0xf00;
tcg_out_dat_imm(s, COND_AL, ARITH_ADD, 8, addr_reg,
((offset >> i) & 0xff) | rot);
addr_reg = 8;
offset &= ~(0xff << i);
}
}
switch (opc) {
case 0:
tcg_out_st8_12(s, COND_AL, data_reg, addr_reg, 0);