From 8d0b9dc9be3919e9979eac59fd12e8f82b098325 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 5 May 2005 16:15:23 -0700 Subject: [PATCH] uml: start cross-build support : mk_user_constants Beginning of cross-build fixes. Instead of expecting that mk_user_constants (compiled and executed on the build box) will see the sizeof, etc. for target box, we do what every architecture already does for asm-offsets. Namely, have user-offsets.c compiled *for* *target* into user-offsets.s and sed it into the header with relevant constants. We don't need to reinvent any wheels - all tools are already there. This patch deals with mk_user_constants. It doesn't assume any relationship between target and build environment anymore - we pick all defines we need from user-offsets.h. Later patches will deal with the rest of mk_... helpers in the same way. Signed-off-by: Al Viro Signed-off-by: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/Makefile | 8 ++++ arch/um/os-Linux/util/Makefile | 2 +- arch/um/os-Linux/util/mk_user_constants.c | 10 +--- arch/um/sys-i386/user-offsets.c | 69 +++++++++++++++++++++++++++ arch/um/sys-x86_64/user-offsets.c | 78 +++++++++++++++++++++++++++++++ 5 files changed, 158 insertions(+), 9 deletions(-) create mode 100644 arch/um/sys-i386/user-offsets.c create mode 100644 arch/um/sys-x86_64/user-offsets.c (limited to 'arch') diff --git a/arch/um/Makefile b/arch/um/Makefile index 1d136640d360..e3465dab57fd 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -166,6 +166,14 @@ endef $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h $(call filechk,umlconfig) +$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c + $(CC) $(USER_CFLAGS) -S -o $@ $< + +$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s + $(call filechk,gen-asm-offsets) + +CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h + $(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task $(call filechk,gen_header) diff --git a/arch/um/os-Linux/util/Makefile b/arch/um/os-Linux/util/Makefile index fb00ddf969bd..9778aed0c314 100644 --- a/arch/um/os-Linux/util/Makefile +++ b/arch/um/os-Linux/util/Makefile @@ -1,4 +1,4 @@ hostprogs-y := mk_user_constants always := $(hostprogs-y) -mk_user_constants-objs := mk_user_constants.o +HOSTCFLAGS_mk_user_constants.o := -I$(objtree)/arch/um diff --git a/arch/um/os-Linux/util/mk_user_constants.c b/arch/um/os-Linux/util/mk_user_constants.c index 0933518aa8bd..4838f30eecf0 100644 --- a/arch/um/os-Linux/util/mk_user_constants.c +++ b/arch/um/os-Linux/util/mk_user_constants.c @@ -1,11 +1,5 @@ #include -#include -/* For some reason, x86_64 nowhere defines u64 and u32, even though they're - * used throughout the headers. - */ -typedef __u64 u64; -typedef __u32 u32; -#include +#include int main(int argc, char **argv) { @@ -20,7 +14,7 @@ int main(int argc, char **argv) * x86_64 (216 vs 168 bytes). user_regs_struct is the correct size on * both x86_64 and i386. */ - printf("#define UM_FRAME_SIZE %d\n", (int) sizeof(struct user_regs_struct)); + printf("#define UM_FRAME_SIZE %d\n", __UM_FRAME_SIZE); printf("\n"); printf("#endif\n"); diff --git a/arch/um/sys-i386/user-offsets.c b/arch/um/sys-i386/user-offsets.c new file mode 100644 index 000000000000..3ceaabceb3d7 --- /dev/null +++ b/arch/um/sys-i386/user-offsets.c @@ -0,0 +1,69 @@ +#include +#include +#include +#include +#include + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ + OFFSET(SC_IP, sigcontext, eip); + OFFSET(SC_SP, sigcontext, esp); + OFFSET(SC_FS, sigcontext, fs); + OFFSET(SC_GS, sigcontext, gs); + OFFSET(SC_DS, sigcontext, ds); + OFFSET(SC_ES, sigcontext, es); + OFFSET(SC_SS, sigcontext, ss); + OFFSET(SC_CS, sigcontext, cs); + OFFSET(SC_EFLAGS, sigcontext, eflags); + OFFSET(SC_EAX, sigcontext, eax); + OFFSET(SC_EBX, sigcontext, ebx); + OFFSET(SC_ECX, sigcontext, ecx); + OFFSET(SC_EDX, sigcontext, edx); + OFFSET(SC_EDI, sigcontext, edi); + OFFSET(SC_ESI, sigcontext, esi); + OFFSET(SC_EBP, sigcontext, ebp); + OFFSET(SC_TRAPNO, sigcontext, trapno); + OFFSET(SC_ERR, sigcontext, err); + OFFSET(SC_CR2, sigcontext, cr2); + OFFSET(SC_FPSTATE, sigcontext, fpstate); + OFFSET(SC_SIGMASK, sigcontext, oldmask); + OFFSET(SC_FP_CW, _fpstate, cw); + OFFSET(SC_FP_SW, _fpstate, sw); + OFFSET(SC_FP_TAG, _fpstate, tag); + OFFSET(SC_FP_IPOFF, _fpstate, ipoff); + OFFSET(SC_FP_CSSEL, _fpstate, cssel); + OFFSET(SC_FP_DATAOFF, _fpstate, dataoff); + OFFSET(SC_FP_DATASEL, _fpstate, datasel); + OFFSET(SC_FP_ST, _fpstate, _st); + OFFSET(SC_FXSR_ENV, _fpstate, _fxsr_env); + + DEFINE(HOST_FRAME_SIZE, FRAME_SIZE); + DEFINE(HOST_FP_SIZE, + sizeof(struct user_i387_struct) / sizeof(unsigned long)); + DEFINE(HOST_XFP_SIZE, + sizeof(struct user_fxsr_struct) / sizeof(unsigned long)); + + DEFINE(HOST_IP, EIP); + DEFINE(HOST_SP, UESP); + DEFINE(HOST_EFLAGS, EFL); + DEFINE(HOST_EAX, EAX); + DEFINE(HOST_EBX, EBX); + DEFINE(HOST_ECX, ECX); + DEFINE(HOST_EDX, EDX); + DEFINE(HOST_ESI, ESI); + DEFINE(HOST_EDI, EDI); + DEFINE(HOST_EBP, EBP); + DEFINE(HOST_CS, CS); + DEFINE(HOST_SS, SS); + DEFINE(HOST_DS, DS); + DEFINE(HOST_FS, FS); + DEFINE(HOST_ES, ES); + DEFINE(HOST_GS, GS); + DEFINE(__UM_FRAME_SIZE, sizeof(struct user_regs_struct)); +} diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c new file mode 100644 index 000000000000..5e14792e4838 --- /dev/null +++ b/arch/um/sys-x86_64/user-offsets.c @@ -0,0 +1,78 @@ +#include +#include +#include +#define __FRAME_OFFSETS +#include +#include + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ + OFFSET(SC_RBX, sigcontext, rbx); + OFFSET(SC_RCX, sigcontext, rcx); + OFFSET(SC_RDX, sigcontext, rdx); + OFFSET(SC_RSI, sigcontext, rsi); + OFFSET(SC_RDI, sigcontext, rdi); + OFFSET(SC_RBP, sigcontext, rbp); + OFFSET(SC_RAX, sigcontext, rax); + OFFSET(SC_R8, sigcontext, r8); + OFFSET(SC_R9, sigcontext, r9); + OFFSET(SC_R10, sigcontext, r10); + OFFSET(SC_R11, sigcontext, r11); + OFFSET(SC_R12, sigcontext, r12); + OFFSET(SC_R13, sigcontext, r13); + OFFSET(SC_R14, sigcontext, r14); + OFFSET(SC_R15, sigcontext, r15); + OFFSET(SC_IP, sigcontext, rip); + OFFSET(SC_SP, sigcontext, rsp); + OFFSET(SC_CR2, sigcontext, cr2); + OFFSET(SC_ERR, sigcontext, err); + OFFSET(SC_TRAPNO, sigcontext, trapno); + OFFSET(SC_CS, sigcontext, cs); + OFFSET(SC_FS, sigcontext, fs); + OFFSET(SC_GS, sigcontext, gs); + OFFSET(SC_EFLAGS, sigcontext, eflags); + OFFSET(SC_SIGMASK, sigcontext, oldmask); +#if 0 + OFFSET(SC_ORIG_RAX, sigcontext, orig_rax); + OFFSET(SC_DS, sigcontext, ds); + OFFSET(SC_ES, sigcontext, es); + OFFSET(SC_SS, sigcontext, ss); +#endif + + DEFINE(HOST_FRAME_SIZE, FRAME_SIZE); + DEFINE(HOST_RBX, RBX); + DEFINE(HOST_RCX, RCX); + DEFINE(HOST_RDI, RDI); + DEFINE(HOST_RSI, RSI); + DEFINE(HOST_RDX, RDX); + DEFINE(HOST_RBP, RBP); + DEFINE(HOST_RAX, RAX); + DEFINE(HOST_R8, R8); + DEFINE(HOST_R9, R9); + DEFINE(HOST_R10, R10); + DEFINE(HOST_R11, R11); + DEFINE(HOST_R12, R12); + DEFINE(HOST_R13, R13); + DEFINE(HOST_R14, R14); + DEFINE(HOST_R15, R15); + DEFINE(HOST_ORIG_RAX, ORIG_RAX); + DEFINE(HOST_CS, CS); + DEFINE(HOST_SS, SS); + DEFINE(HOST_EFLAGS, EFLAGS); +#if 0 + DEFINE(HOST_FS, FS); + DEFINE(HOST_GS, GS); + DEFINE(HOST_DS, DS); + DEFINE(HOST_ES, ES); +#endif + + DEFINE(HOST_IP, RIP); + DEFINE(HOST_SP, RSP); + DEFINE(__UM_FRAME_SIZE, sizeof(struct user_regs_struct)); +} -- cgit v1.2.3-58-ga151