| Message ID | 20241114011310.3615-12-philmd@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | exec: Build up 'cputlb.h' and 'ram_addr.h' headers | expand |
On 11/13/24 17:12, Philippe Mathieu-Daudé wrote: > Extract all declarations related to 'guest from/to host' > address translation to a new "user/guest-host.h" header. > > Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> > --- > include/exec/cpu-all.h | 34 +-------------- > include/exec/cpu_ldst.h | 47 +-------------------- > include/user/guest-host.h | 87 +++++++++++++++++++++++++++++++++++++++ > 3 files changed, 89 insertions(+), 79 deletions(-) > create mode 100644 include/user/guest-host.h > > diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h > index 1c40e27672..1c8e0446d0 100644 > --- a/include/exec/cpu-all.h > +++ b/include/exec/cpu-all.h > @@ -64,39 +64,7 @@ > > /* MMU memory access macros */ > > -#if defined(CONFIG_USER_ONLY) > -#include "user/abitypes.h" > - > -/* > - * If non-zero, the guest virtual address space is a contiguous subset > - * of the host virtual address space, i.e. '-R reserved_va' is in effect > - * either from the command-line or by default. The value is the last > - * byte of the guest address space e.g. UINT32_MAX. > - * > - * If zero, the host and guest virtual address spaces are intermingled. > - */ > -extern unsigned long reserved_va; > - > -/* > - * Limit the guest addresses as best we can. > - * > - * When not using -R reserved_va, we cannot really limit the guest > - * to less address space than the host. For 32-bit guests, this > - * acts as a sanity check that we're not giving the guest an address > - * that it cannot even represent. For 64-bit guests... the address > - * might not be what the real kernel would give, but it is at least > - * representable in the guest. > - * > - * TODO: Improve address allocation to avoid this problem, and to > - * avoid setting bits at the top of guest addresses that might need > - * to be used for tags. > - */ > -#define GUEST_ADDR_MAX_ \ > - ((MIN_CONST(TARGET_VIRT_ADDR_SPACE_BITS, TARGET_ABI_BITS) <= 32) ? \ > - UINT32_MAX : ~0ul) > -#define GUEST_ADDR_MAX (reserved_va ? : GUEST_ADDR_MAX_) > - > -#else > +#if !defined(CONFIG_USER_ONLY) > > #include "exec/hwaddr.h" > > diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h > index dac12bd8eb..a26ab49b0b 100644 > --- a/include/exec/cpu_ldst.h > +++ b/include/exec/cpu_ldst.h > @@ -72,52 +72,7 @@ > #include "qemu/int128.h" > > #if defined(CONFIG_USER_ONLY) > - > -#include "user/guest-base.h" > - > -#ifndef TARGET_TAGGED_ADDRESSES > -static inline abi_ptr cpu_untagged_addr(CPUState *cs, abi_ptr x) > -{ > - return x; > -} > -#endif > - > -/* All direct uses of g2h and h2g need to go away for usermode softmmu. */ > -static inline void *g2h_untagged(abi_ptr x) > -{ > - return (void *)((uintptr_t)(x) + guest_base); > -} > - > -static inline void *g2h(CPUState *cs, abi_ptr x) > -{ > - return g2h_untagged(cpu_untagged_addr(cs, x)); > -} > - > -static inline bool guest_addr_valid_untagged(abi_ulong x) > -{ > - return x <= GUEST_ADDR_MAX; > -} > - > -static inline bool guest_range_valid_untagged(abi_ulong start, abi_ulong len) > -{ > - return len - 1 <= GUEST_ADDR_MAX && start <= GUEST_ADDR_MAX - len + 1; > -} > - > -#define h2g_valid(x) \ > - (HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS || \ > - (uintptr_t)(x) - guest_base <= GUEST_ADDR_MAX) > - > -#define h2g_nocheck(x) ({ \ > - uintptr_t __ret = (uintptr_t)(x) - guest_base; \ > - (abi_ptr)__ret; \ > -}) > - > -#define h2g(x) ({ \ > - /* Check if given address fits target address space */ \ > - assert(h2g_valid(x)); \ > - h2g_nocheck(x); \ > -}) > - > +#include "user/guest-host.h" > #endif /* CONFIG_USER_ONLY */ > > uint32_t cpu_ldub_data(CPUArchState *env, abi_ptr ptr); > diff --git a/include/user/guest-host.h b/include/user/guest-host.h > new file mode 100644 > index 0000000000..8d2079bbbb > --- /dev/null > +++ b/include/user/guest-host.h > @@ -0,0 +1,87 @@ > +/* SPDX-License-Identifier: LGPL-2.1-or-later */ > +/* > + * guest <-> host helpers. > + * > + * Copyright (c) 2003 Fabrice Bellard > + */ > + > +#ifndef USER_GUEST_HOST_H > +#define USER_GUEST_HOST_H > + > +#include "user/abitypes.h" > +#include "user/guest-base.h" > +#include "cpu.h" > + > +/* > + * If non-zero, the guest virtual address space is a contiguous subset > + * of the host virtual address space, i.e. '-R reserved_va' is in effect > + * either from the command-line or by default. The value is the last > + * byte of the guest address space e.g. UINT32_MAX. > + * > + * If zero, the host and guest virtual address spaces are intermingled. > + */ > +extern unsigned long reserved_va; > + > +/* > + * Limit the guest addresses as best we can. > + * > + * When not using -R reserved_va, we cannot really limit the guest > + * to less address space than the host. For 32-bit guests, this > + * acts as a sanity check that we're not giving the guest an address > + * that it cannot even represent. For 64-bit guests... the address > + * might not be what the real kernel would give, but it is at least > + * representable in the guest. > + * > + * TODO: Improve address allocation to avoid this problem, and to > + * avoid setting bits at the top of guest addresses that might need > + * to be used for tags. > + */ > +#define GUEST_ADDR_MAX_ \ > + ((MIN_CONST(TARGET_VIRT_ADDR_SPACE_BITS, TARGET_ABI_BITS) <= 32) ? \ > + UINT32_MAX : ~0ul) > +#define GUEST_ADDR_MAX (reserved_va ? : GUEST_ADDR_MAX_) > + > +#ifndef TARGET_TAGGED_ADDRESSES > +static inline abi_ptr cpu_untagged_addr(CPUState *cs, abi_ptr x) > +{ > + return x; > +} > +#endif > + > +/* All direct uses of g2h and h2g need to go away for usermode softmmu. */ > +static inline void *g2h_untagged(abi_ptr x) > +{ > + return (void *)((uintptr_t)(x) + guest_base); > +} > + > +static inline void *g2h(CPUState *cs, abi_ptr x) > +{ > + return g2h_untagged(cpu_untagged_addr(cs, x)); > +} > + > +static inline bool guest_addr_valid_untagged(abi_ulong x) > +{ > + return x <= GUEST_ADDR_MAX; > +} > + > +static inline bool guest_range_valid_untagged(abi_ulong start, abi_ulong len) > +{ > + return len - 1 <= GUEST_ADDR_MAX && start <= GUEST_ADDR_MAX - len + 1; > +} > + > +#define h2g_valid(x) \ > + (HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS || \ > + (uintptr_t)(x) - guest_base <= GUEST_ADDR_MAX) > + > +#define h2g_nocheck(x) ({ \ > + uintptr_t __ret = (uintptr_t)(x) - guest_base; \ > + (abi_ptr)__ret; \ > +}) > + > +#define h2g(x) ({ \ > + /* Check if given address fits target address space */ \ > + assert(h2g_valid(x)); \ > + h2g_nocheck(x); \ > +}) > + > +#endif Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 1c40e27672..1c8e0446d0 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -64,39 +64,7 @@ /* MMU memory access macros */ -#if defined(CONFIG_USER_ONLY) -#include "user/abitypes.h" - -/* - * If non-zero, the guest virtual address space is a contiguous subset - * of the host virtual address space, i.e. '-R reserved_va' is in effect - * either from the command-line or by default. The value is the last - * byte of the guest address space e.g. UINT32_MAX. - * - * If zero, the host and guest virtual address spaces are intermingled. - */ -extern unsigned long reserved_va; - -/* - * Limit the guest addresses as best we can. - * - * When not using -R reserved_va, we cannot really limit the guest - * to less address space than the host. For 32-bit guests, this - * acts as a sanity check that we're not giving the guest an address - * that it cannot even represent. For 64-bit guests... the address - * might not be what the real kernel would give, but it is at least - * representable in the guest. - * - * TODO: Improve address allocation to avoid this problem, and to - * avoid setting bits at the top of guest addresses that might need - * to be used for tags. - */ -#define GUEST_ADDR_MAX_ \ - ((MIN_CONST(TARGET_VIRT_ADDR_SPACE_BITS, TARGET_ABI_BITS) <= 32) ? \ - UINT32_MAX : ~0ul) -#define GUEST_ADDR_MAX (reserved_va ? : GUEST_ADDR_MAX_) - -#else +#if !defined(CONFIG_USER_ONLY) #include "exec/hwaddr.h" diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index dac12bd8eb..a26ab49b0b 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -72,52 +72,7 @@ #include "qemu/int128.h" #if defined(CONFIG_USER_ONLY) - -#include "user/guest-base.h" - -#ifndef TARGET_TAGGED_ADDRESSES -static inline abi_ptr cpu_untagged_addr(CPUState *cs, abi_ptr x) -{ - return x; -} -#endif - -/* All direct uses of g2h and h2g need to go away for usermode softmmu. */ -static inline void *g2h_untagged(abi_ptr x) -{ - return (void *)((uintptr_t)(x) + guest_base); -} - -static inline void *g2h(CPUState *cs, abi_ptr x) -{ - return g2h_untagged(cpu_untagged_addr(cs, x)); -} - -static inline bool guest_addr_valid_untagged(abi_ulong x) -{ - return x <= GUEST_ADDR_MAX; -} - -static inline bool guest_range_valid_untagged(abi_ulong start, abi_ulong len) -{ - return len - 1 <= GUEST_ADDR_MAX && start <= GUEST_ADDR_MAX - len + 1; -} - -#define h2g_valid(x) \ - (HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS || \ - (uintptr_t)(x) - guest_base <= GUEST_ADDR_MAX) - -#define h2g_nocheck(x) ({ \ - uintptr_t __ret = (uintptr_t)(x) - guest_base; \ - (abi_ptr)__ret; \ -}) - -#define h2g(x) ({ \ - /* Check if given address fits target address space */ \ - assert(h2g_valid(x)); \ - h2g_nocheck(x); \ -}) - +#include "user/guest-host.h" #endif /* CONFIG_USER_ONLY */ uint32_t cpu_ldub_data(CPUArchState *env, abi_ptr ptr); diff --git a/include/user/guest-host.h b/include/user/guest-host.h new file mode 100644 index 0000000000..8d2079bbbb --- /dev/null +++ b/include/user/guest-host.h @@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * guest <-> host helpers. + * + * Copyright (c) 2003 Fabrice Bellard + */ + +#ifndef USER_GUEST_HOST_H +#define USER_GUEST_HOST_H + +#include "user/abitypes.h" +#include "user/guest-base.h" +#include "cpu.h" + +/* + * If non-zero, the guest virtual address space is a contiguous subset + * of the host virtual address space, i.e. '-R reserved_va' is in effect + * either from the command-line or by default. The value is the last + * byte of the guest address space e.g. UINT32_MAX. + * + * If zero, the host and guest virtual address spaces are intermingled. + */ +extern unsigned long reserved_va; + +/* + * Limit the guest addresses as best we can. + * + * When not using -R reserved_va, we cannot really limit the guest + * to less address space than the host. For 32-bit guests, this + * acts as a sanity check that we're not giving the guest an address + * that it cannot even represent. For 64-bit guests... the address + * might not be what the real kernel would give, but it is at least + * representable in the guest. + * + * TODO: Improve address allocation to avoid this problem, and to + * avoid setting bits at the top of guest addresses that might need + * to be used for tags. + */ +#define GUEST_ADDR_MAX_ \ + ((MIN_CONST(TARGET_VIRT_ADDR_SPACE_BITS, TARGET_ABI_BITS) <= 32) ? \ + UINT32_MAX : ~0ul) +#define GUEST_ADDR_MAX (reserved_va ? : GUEST_ADDR_MAX_) + +#ifndef TARGET_TAGGED_ADDRESSES +static inline abi_ptr cpu_untagged_addr(CPUState *cs, abi_ptr x) +{ + return x; +} +#endif + +/* All direct uses of g2h and h2g need to go away for usermode softmmu. */ +static inline void *g2h_untagged(abi_ptr x) +{ + return (void *)((uintptr_t)(x) + guest_base); +} + +static inline void *g2h(CPUState *cs, abi_ptr x) +{ + return g2h_untagged(cpu_untagged_addr(cs, x)); +} + +static inline bool guest_addr_valid_untagged(abi_ulong x) +{ + return x <= GUEST_ADDR_MAX; +} + +static inline bool guest_range_valid_untagged(abi_ulong start, abi_ulong len) +{ + return len - 1 <= GUEST_ADDR_MAX && start <= GUEST_ADDR_MAX - len + 1; +} + +#define h2g_valid(x) \ + (HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS || \ + (uintptr_t)(x) - guest_base <= GUEST_ADDR_MAX) + +#define h2g_nocheck(x) ({ \ + uintptr_t __ret = (uintptr_t)(x) - guest_base; \ + (abi_ptr)__ret; \ +}) + +#define h2g(x) ({ \ + /* Check if given address fits target address space */ \ + assert(h2g_valid(x)); \ + h2g_nocheck(x); \ +}) + +#endif
Extract all declarations related to 'guest from/to host' address translation to a new "user/guest-host.h" header. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> --- include/exec/cpu-all.h | 34 +-------------- include/exec/cpu_ldst.h | 47 +-------------------- include/user/guest-host.h | 87 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 89 insertions(+), 79 deletions(-) create mode 100644 include/user/guest-host.h