diff options
| author | Christophe Lyon <christophe.lyon@st.com> | 2018-04-30 10:03:41 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2018-05-03 18:25:29 +0200 |
| commit | a99856cd7f30b8c64cfaf97791dc5d462dabad6e (patch) | |
| tree | de72a1b32d34d62f5471713010fc2a98532b8771 /linux-user | |
| parent | 59255887e6cafeff747250d2613003a41d1d9dff (diff) | |
Remove CONFIG_USE_FDPIC.
We want to avoid code disabled by default, because it ends up less
tested. This patch removes all instances of #ifdef CONFIG_USE_FDPIC,
most of which can be safely kept. For the ones that should be
conditionally executed, we define elf_is_fdpic(). Without this patch,
defining CONFIG_USE_FDPIC would prevent QEMU from building precisely
because elf_is_fdpic is not defined.
Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180430080404.7323-2-christophe.lyon@st.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/elfload.c | 18 | ||||
| -rw-r--r-- | linux-user/qemu.h | 4 |
2 files changed, 9 insertions, 13 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index c77ed1bb01..bbe93b03b6 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1681,7 +1681,12 @@ static void zero_bss(abi_ulong elf_bss, abi_ulong last_bss, int prot) } } -#ifdef CONFIG_USE_FDPIC +/* Default implementation, always false. */ +static int elf_is_fdpic(struct elfhdr *exec) +{ + return 0; +} + static abi_ulong loader_build_fdpic_loadmap(struct image_info *info, abi_ulong sp) { uint16_t n; @@ -1706,7 +1711,6 @@ static abi_ulong loader_build_fdpic_loadmap(struct image_info *info, abi_ulong s return sp; } -#endif static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, struct elfhdr *exec, @@ -1725,7 +1729,6 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, sp = p; -#ifdef CONFIG_USE_FDPIC /* Needs to be before we load the env/argc/... */ if (elf_is_fdpic(exec)) { /* Need 4 byte alignment for these structs */ @@ -1737,7 +1740,6 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, sp = loader_build_fdpic_loadmap(interp_info, sp); } } -#endif u_platform = 0; k_platform = ELF_PLATFORM; @@ -2153,10 +2155,8 @@ static void load_elf_image(const char *image_name, int image_fd, } bswap_phdr(phdr, ehdr->e_phnum); -#ifdef CONFIG_USE_FDPIC info->nsegs = 0; info->pt_dynamic_addr = 0; -#endif mmap_lock(); @@ -2173,9 +2173,7 @@ static void load_elf_image(const char *image_name, int image_fd, if (a > hiaddr) { hiaddr = a; } -#ifdef CONFIG_USE_FDPIC ++info->nsegs; -#endif } } @@ -2200,8 +2198,7 @@ static void load_elf_image(const char *image_name, int image_fd, } load_bias = load_addr - loaddr; -#ifdef CONFIG_USE_FDPIC - { + if (elf_is_fdpic(ehdr)) { struct elf32_fdpic_loadseg *loadsegs = info->loadsegs = g_malloc(sizeof(*loadsegs) * info->nsegs); @@ -2219,7 +2216,6 @@ static void load_elf_image(const char *image_name, int image_fd, } } } -#endif info->load_bias = load_bias; info->load_addr = load_addr; diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 192a0d2fef..da3b51724c 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -51,13 +51,13 @@ struct image_info { abi_ulong file_string; uint32_t elf_flags; int personality; -#ifdef CONFIG_USE_FDPIC + + /* The fields below are used in FDPIC mode. */ abi_ulong loadmap_addr; uint16_t nsegs; void *loadsegs; abi_ulong pt_dynamic_addr; struct image_info *other_info; -#endif }; #ifdef TARGET_I386 |