<machine/mcontext.h>
Change-Id: I2ad64018f3f402e7ccc5c4dc037dd0a3fe56a929
This commit is contained in:
Ben Gras
Lionel Sambuc
parent
17587738d3
commit
5cecdfcb3e
8 changed files with 377 additions and 85 deletions
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@ -10,6 +10,7 @@
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#include "kernel/system.h"
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#include <string.h>
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#include <assert.h>
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#include <machine/mcontext.h>
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#if USE_MCONTEXT
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@ -35,17 +36,18 @@ int do_getmcontext(struct proc * caller, message * m_ptr)
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/* Get the mcontext structure into our address space. */
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if ((r = data_copy(m_ptr->PR_ENDPT, (vir_bytes) m_ptr->PR_CTX_PTR, KERNEL,
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(vir_bytes) &mc, (phys_bytes) sizeof(struct __mcontext))) != OK)
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(vir_bytes) &mc, (phys_bytes) sizeof(mcontext_t))) != OK)
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return(r);
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mc.mc_flags = 0;
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#if defined(__i386__)
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/* Copy FPU state */
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mc.mc_fpu_flags = 0;
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if (proc_used_fpu(rp)) {
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/* make sure that the FPU context is saved into proc structure first */
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save_fpu(rp);
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mc.mc_fpu_flags = rp->p_misc_flags & MF_FPU_INITIALIZED;
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memcpy(&(mc.mc_fpu_state), rp->p_seg.fpu_state, FPU_XFP_SIZE);
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mc.mc_flags = (rp->p_misc_flags & MF_FPU_INITIALIZED) ? _MC_FPU_SAVED : 0;
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assert(sizeof(mc.__fpregs.__fp_reg_set) == FPU_XFP_SIZE);
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memcpy(&(mc.__fpregs.__fp_reg_set), rp->p_seg.fpu_state, FPU_XFP_SIZE);
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}
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#endif
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@ -53,7 +55,7 @@ int do_getmcontext(struct proc * caller, message * m_ptr)
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/* Copy the mcontext structure to the user's address space. */
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if ((r = data_copy(KERNEL, (vir_bytes) &mc, m_ptr->PR_ENDPT,
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(vir_bytes) m_ptr->PR_CTX_PTR,
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(phys_bytes) sizeof(struct __mcontext))) != OK)
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(phys_bytes) sizeof(mcontext_t))) != OK)
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return(r);
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return(OK);
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@ -76,14 +78,15 @@ int do_setmcontext(struct proc * caller, message * m_ptr)
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/* Get the mcontext structure into our address space. */
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if ((r = data_copy(m_ptr->PR_ENDPT, (vir_bytes) m_ptr->PR_CTX_PTR, KERNEL,
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(vir_bytes) &mc, (phys_bytes) sizeof(struct __mcontext))) != OK)
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(vir_bytes) &mc, (phys_bytes) sizeof(mcontext_t))) != OK)
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return(r);
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#if defined(__i386__)
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/* Copy FPU state */
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if (mc.mc_fpu_flags & MF_FPU_INITIALIZED) {
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if (mc.mc_flags & _MC_FPU_SAVED) {
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rp->p_misc_flags |= MF_FPU_INITIALIZED;
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memcpy(rp->p_seg.fpu_state, &(mc.mc_fpu_state), FPU_XFP_SIZE);
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assert(sizeof(mc.__fpregs.__fp_reg_set) == FPU_XFP_SIZE);
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memcpy(rp->p_seg.fpu_state, &(mc.__fpregs.__fp_reg_set), FPU_XFP_SIZE);
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} else
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rp->p_misc_flags &= ~MF_FPU_INITIALIZED;
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/* force reloading FPU in either case */
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@ -8,22 +8,22 @@ struct __ucontext
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member UC_FLAGS uc_flags
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member UC_LINK uc_link
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member MAGIC uc_mcontext.mc_magic
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member REG0 uc_mcontext.mc_p_reg.retreg
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member REG1 uc_mcontext.mc_p_reg.r1
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member REG2 uc_mcontext.mc_p_reg.r2
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member REG3 uc_mcontext.mc_p_reg.r3
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member REG4 uc_mcontext.mc_p_reg.r4
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member REG5 uc_mcontext.mc_p_reg.r5
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member REG6 uc_mcontext.mc_p_reg.r6
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member REG7 uc_mcontext.mc_p_reg.r7
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member REG8 uc_mcontext.mc_p_reg.r8
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member REG9 uc_mcontext.mc_p_reg.r9
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member REG10 uc_mcontext.mc_p_reg.r10
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member FPREG uc_mcontext.mc_p_reg.fp
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member REG12 uc_mcontext.mc_p_reg.r12
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member SPREG uc_mcontext.mc_p_reg.sp
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member LRREG uc_mcontext.mc_p_reg.lr
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member PCREG uc_mcontext.mc_p_reg.pc
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member REG0 uc_mcontext.__gregs[_REG_R0]
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member REG1 uc_mcontext.__gregs[_REG_R1]
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member REG2 uc_mcontext.__gregs[_REG_R2]
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member REG3 uc_mcontext.__gregs[_REG_R3]
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member REG4 uc_mcontext.__gregs[_REG_R4]
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member REG5 uc_mcontext.__gregs[_REG_R5]
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member REG6 uc_mcontext.__gregs[_REG_R6]
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member REG7 uc_mcontext.__gregs[_REG_R7]
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member REG8 uc_mcontext.__gregs[_REG_R8]
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member REG9 uc_mcontext.__gregs[_REG_R9]
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member REG10 uc_mcontext.__gregs[_REG_R10]
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member FPREG uc_mcontext.__gregs[_REG_FP]
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member REG12 uc_mcontext.__gregs[_REG_R12]
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member SPREG uc_mcontext.__gregs[_REG_SP]
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member LRREG uc_mcontext.__gregs[_REG_LR]
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member PCREG uc_mcontext.__gregs[_REG_PC]
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define EFAULT EFAULT
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define EINVAL EINVAL
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define MCF_MAGIC MCF_MAGIC
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@ -8,15 +8,15 @@ struct __ucontext
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member UC_FLAGS uc_flags
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member UC_LINK uc_link
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member MAGIC uc_mcontext.mc_magic
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member DI uc_mcontext.mc_p_reg.di
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member SI uc_mcontext.mc_p_reg.si
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member BP uc_mcontext.mc_p_reg.fp
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member AX uc_mcontext.mc_p_reg.retreg
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member BX uc_mcontext.mc_p_reg.bx
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member CX uc_mcontext.mc_p_reg.cx
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member DX uc_mcontext.mc_p_reg.dx
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member PC uc_mcontext.mc_p_reg.pc
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member SP uc_mcontext.mc_p_reg.sp
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member DI uc_mcontext.__gregs[_REG_EDI]
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member SI uc_mcontext.__gregs[_REG_ESI]
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member BP uc_mcontext.__gregs[_REG_EBP]
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member AX uc_mcontext.__gregs[_REG_EAX]
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member BX uc_mcontext.__gregs[_REG_EBX]
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member CX uc_mcontext.__gregs[_REG_ECX]
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member DX uc_mcontext.__gregs[_REG_EDX]
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member PC uc_mcontext.__gregs[_REG_EIP]
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member SP uc_mcontext.__gregs[_REG_ESP]
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define EFAULT EFAULT
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define EINVAL EINVAL
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define MCF_MAGIC MCF_MAGIC
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@ -84,7 +84,7 @@ void makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
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} else if ((ucp->uc_stack.ss_sp == NULL) ||
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(ucp->uc_stack.ss_size < MINSIGSTKSZ)) {
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ucp->uc_mcontext.mc_magic = 0;
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ucp->uc_mcontext.mc_p_reg.sp = 0;
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_UC_MACHINE_SET_STACK(ucp, 0);
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return;
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}
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@ -121,9 +121,9 @@ void makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
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/* Adjust the machine context to point to the top of this stack and the
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program counter to the context start wrapper. */
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ucp->uc_mcontext.mc_p_reg.fp = 0; /* Clear frame pointer */
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ucp->uc_mcontext.mc_p_reg.sp = (reg_t) stack_top;
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ucp->uc_mcontext.mc_p_reg.pc = (reg_t) ctx_start;
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_UC_MACHINE_SET_EBP(ucp, 0); /* Clear frame pointer */
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_UC_MACHINE_SET_STACK(ucp, (reg_t) stack_top);
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_UC_MACHINE_SET_PC(ucp, (reg_t) ctx_start);
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*stack_top++ = (uintptr_t) func;
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@ -140,13 +140,14 @@ void makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
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/* Set ESI to point to the base of the stack where ucp is stored, so
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that the wrapper function knows how to clean up the stack after
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calling `func' (i.e., how to adjust ESP). */
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ucp->uc_mcontext.mc_p_reg.si = (reg_t) stack_top;
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_UC_MACHINE_SET_ESI(ucp, (reg_t) stack_top);
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/* If we ran out of stack space, invalidate stack pointer. Eventually,
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swapcontext will choke on this and return ENOMEM. */
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if (stack_top == ucp->uc_stack.ss_sp)
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ucp->uc_mcontext.mc_p_reg.sp = 0;
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if (stack_top == ucp->uc_stack.ss_sp) {
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_UC_MACHINE_SET_STACK(ucp, 0);
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}
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#elif defined(__arm__)
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/* The caller provides a pointer to a stack that we can use to run our
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context on. When the context starts, control is given to the
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@ -180,23 +181,23 @@ void makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
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/* Adjust the machine context to point to the top of this stack and the
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program counter to the 'func' entry point. Set lr to ctx_start, so
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ctx_start runs after 'func'. Save ucp in r4 */
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ucp->uc_mcontext.mc_p_reg.fp = 0; /* Clear frame pointer */
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ucp->uc_mcontext.mc_p_reg.sp = (reg_t) stack_top;
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ucp->uc_mcontext.mc_p_reg.pc = (reg_t) func;
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ucp->uc_mcontext.mc_p_reg.lr = (reg_t) ctx_start;
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ucp->uc_mcontext.mc_p_reg.r4 = (reg_t) ucp;
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_UC_MACHINE_SET_FP(ucp, 0); /* Clear frame pointer */
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_UC_MACHINE_SET_STACK(ucp, (reg_t) stack_top);
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_UC_MACHINE_SET_PC(ucp, (reg_t) func);
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_UC_MACHINE_SET_LR(ucp, (reg_t) ctx_start);
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_UC_MACHINE_SET_R4(ucp, (reg_t) ucp);
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/* Copy arguments to r0-r3 and stack. */
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va_start(ap, argc);
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/* Pass up to four arguments in registers. */
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if (argc-- > 0)
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ucp->uc_mcontext.mc_p_reg.retreg = va_arg(ap, uintptr_t);
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_UC_MACHINE_SET_R0(ucp, va_arg(ap, uintptr_t));
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if (argc-- > 0)
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ucp->uc_mcontext.mc_p_reg.r1 = va_arg(ap, uintptr_t);
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_UC_MACHINE_SET_R1(ucp, va_arg(ap, uintptr_t));
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if (argc-- > 0)
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ucp->uc_mcontext.mc_p_reg.r2 = va_arg(ap, uintptr_t);
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_UC_MACHINE_SET_R2(ucp, va_arg(ap, uintptr_t));
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if (argc-- > 0)
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ucp->uc_mcontext.mc_p_reg.r3 = va_arg(ap, uintptr_t);
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_UC_MACHINE_SET_R3(ucp, va_arg(ap, uintptr_t));
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/* Pass the rest on the stack. */
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while (argc-- > 0) {
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*stack_top++ = va_arg(ap, uintptr_t);
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@ -205,8 +206,9 @@ void makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
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/* If we ran out of stack space, invalidate stack pointer. Eventually,
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swapcontext will choke on this and return ENOMEM. */
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if (stack_top == ucp->uc_stack.ss_sp)
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ucp->uc_mcontext.mc_p_reg.sp = 0;
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if (stack_top == ucp->uc_stack.ss_sp) {
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_UC_MACHINE_SET_STACK(ucp, 0);
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}
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#else
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# error "Unsupported platform"
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#endif
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@ -226,7 +228,7 @@ int swapcontext(ucontext_t *oucp, const ucontext_t *ucp)
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return(-1);
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}
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if (ucp->uc_mcontext.mc_p_reg.sp == 0) {
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if (_UC_MACHINE_STACK(ucp) == 0) {
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/* No stack space. Bail out. */
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errno = ENOMEM;
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return(-1);
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@ -116,11 +116,10 @@ void mthread_stats(void)
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*===========================================================================*/
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void mthread_stacktrace(mthread_thread_t t)
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{
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#ifdef __i386__ /* stacktrace only implemented on x86 */
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unsigned long bp, hbp, pc;
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mthread_tcb_t *tcb;
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ucontext_t *ctx;
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mcontext_t *mtx;
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struct stackframe_s *frame;
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tcb = mthread_find_tcb(t);
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ctx = &tcb->m_context;
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@ -130,9 +129,7 @@ void mthread_stacktrace(mthread_thread_t t)
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printf("thread %d: ", t);
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mtx = &ctx->uc_mcontext;
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frame = &mtx->mc_p_reg;
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bp = frame->fp;
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bp = _UC_MACHINE_EBP(ctx);
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while (bp) {
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pc = ((unsigned long *) bp)[1];
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@ -149,6 +146,7 @@ void mthread_stacktrace(mthread_thread_t t)
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}
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printf("\n");
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#endif
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}
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/*===========================================================================*
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@ -1,19 +1,165 @@
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#ifndef _MACHINE_MCONTEXT_H
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#define _MACHINE_MCONTEXT_H
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/* $NetBSD: mcontext.h,v 1.11 2012/08/03 07:59:23 matt Exp $ */
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#include <machine/stackframe.h>
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/*-
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* Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Klaus Klein and by Jason R. Thorpe of Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#define MCF_MAGIC 0xc0ffee
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#ifndef _ARM_MCONTEXT_H_
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#define _ARM_MCONTEXT_H_
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/* Context to describe processor state */
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typedef struct __mcontext {
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int mc_magic;
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struct stackframe_s mc_p_reg;
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} mcontext_t;
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/*
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* General register state
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*/
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#define _NGREG 17
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typedef unsigned int __greg_t;
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typedef __greg_t __gregset_t[_NGREG];
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__BEGIN_DECLS
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#define _REG_R0 0
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#define _REG_R1 1
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#define _REG_R2 2
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#define _REG_R3 3
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#define _REG_R4 4
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#define _REG_R5 5
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#define _REG_R6 6
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#define _REG_R7 7
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#define _REG_R8 8
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#define _REG_R9 9
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#define _REG_R10 10
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#define _REG_R11 11
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#define _REG_R12 12
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#define _REG_R13 13
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#define _REG_R14 14
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#define _REG_R15 15
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#define _REG_CPSR 16
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/* Convenience synonyms */
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#define _REG_FP _REG_R11
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#define _REG_SP _REG_R13
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#define _REG_LR _REG_R14
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#define _REG_PC _REG_R15
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/*
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* Floating point register state
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*/
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/* Note: the storage layout of this structure must be identical to ARMFPE! */
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typedef struct {
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unsigned int __fp_fpsr;
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struct {
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unsigned int __fp_exponent;
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unsigned int __fp_mantissa_hi;
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unsigned int __fp_mantissa_lo;
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} __fp_fr[8];
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} __fpregset_t;
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typedef struct {
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unsigned int __vfp_fpscr;
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unsigned int __vfp_fstmx[33];
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unsigned int __vfp_fpsid;
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} __vfpregset_t;
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typedef struct {
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__gregset_t __gregs;
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union {
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__fpregset_t __fpregs;
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__vfpregset_t __vfpregs;
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} __fpu;
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__greg_t _mc_tlsbase;
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#ifdef __minix
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int mc_flags;
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int mc_magic;
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#endif
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} mcontext_t, mcontext32_t;
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/* Machine-dependent uc_flags */
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#define _UC_ARM_VFP 0x00010000 /* FPU field is VFP */
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/* used by signal delivery to indicate status of signal stack */
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#define _UC_SETSTACK 0x00020000
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#define _UC_CLRSTACK 0x00040000
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#define _UC_TLSBASE 0x00080000
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#define _UC_MACHINE_PAD 2 /* Padding appended to ucontext_t */
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#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
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#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
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#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0])
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#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
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#ifdef __minix
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#define _UC_MACHINE_STACK(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
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#define _UC_MACHINE_SET_STACK(uc, sp) _UC_MACHINE_STACK(uc) = (sp)
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#define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_FP])
|
||||
#define _UC_MACHINE_SET_FP(uc, fp) _UC_MACHINE_FP(uc) = (fp)
|
||||
|
||||
#define _UC_MACHINE_LR(uc) ((uc)->uc_mcontext.__gregs[_REG_LR])
|
||||
#define _UC_MACHINE_SET_LR(uc, lr) _UC_MACHINE_LR(uc) = (lr)
|
||||
|
||||
#define _UC_MACHINE_R0(uc) ((uc)->uc_mcontext.__gregs[_REG_R0])
|
||||
#define _UC_MACHINE_SET_R0(uc, setreg) _UC_MACHINE_R0(uc) = (setreg)
|
||||
|
||||
#define _UC_MACHINE_R1(uc) ((uc)->uc_mcontext.__gregs[_REG_R1])
|
||||
#define _UC_MACHINE_SET_R1(uc, setreg) _UC_MACHINE_R1(uc) = (setreg)
|
||||
|
||||
#define _UC_MACHINE_R2(uc) ((uc)->uc_mcontext.__gregs[_REG_R2])
|
||||
#define _UC_MACHINE_SET_R2(uc, setreg) _UC_MACHINE_R2(uc) = (setreg)
|
||||
|
||||
#define _UC_MACHINE_R3(uc) ((uc)->uc_mcontext.__gregs[_REG_R3])
|
||||
#define _UC_MACHINE_SET_R3(uc, setreg) _UC_MACHINE_R3(uc) = (setreg)
|
||||
|
||||
#define _UC_MACHINE_R4(uc) ((uc)->uc_mcontext.__gregs[_REG_R4])
|
||||
#define _UC_MACHINE_SET_R4(uc, setreg) _UC_MACHINE_R4(uc) = (setreg)
|
||||
#endif
|
||||
|
||||
#define __UCONTEXT_SIZE 256
|
||||
|
||||
static __inline void *
|
||||
__lwp_getprivate_fast(void)
|
||||
{
|
||||
extern void *_lwp_getprivate(void);
|
||||
void *rv;
|
||||
__asm("mrc p15, 0, %0, c13, c0, 3" : "=r"(rv));
|
||||
if (__predict_true(rv))
|
||||
return rv;
|
||||
/*
|
||||
* Some ARM cores are broken and don't raise an undefined fault when an
|
||||
* unrecogized mrc instruction is encountered, but just return zero.
|
||||
* To do deal with that, if we get a zero we (re-)fetch the value using
|
||||
* syscall.
|
||||
*/
|
||||
return _lwp_getprivate();
|
||||
}
|
||||
|
||||
#ifdef __minix
|
||||
int setmcontext(const mcontext_t *mcp);
|
||||
int getmcontext(mcontext_t *mcp);
|
||||
__END_DECLS
|
||||
#define MCF_MAGIC 0xc0ffee
|
||||
#endif
|
||||
|
||||
#endif /* _MACHINE_MCONTEXT_H */
|
||||
#endif /* !_ARM_MCONTEXT_H_ */
|
||||
|
|
|
|||
|
|
@ -1,22 +1,165 @@
|
|||
#ifndef _MACHINE_MCONTEXT_H
|
||||
#define _MACHINE_MCONTEXT_H 1
|
||||
/* $NetBSD: mcontext.h,v 1.10 2011/02/25 14:07:13 joerg Exp $ */
|
||||
|
||||
#include <machine/fpu.h>
|
||||
#include <machine/stackframe.h>
|
||||
/*-
|
||||
* Copyright (c) 1999 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Klaus Klein.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#define MCF_MAGIC 0xc0ffee
|
||||
#ifndef _I386_MCONTEXT_H_
|
||||
#define _I386_MCONTEXT_H_
|
||||
|
||||
/* Context to describe processor state */
|
||||
typedef struct __mcontext {
|
||||
int mc_magic;
|
||||
struct stackframe_s mc_p_reg;
|
||||
union fpu_state_u mc_fpu_state;
|
||||
short mc_fpu_flags;
|
||||
|
||||
/*
|
||||
* mcontext extensions to handle signal delivery.
|
||||
*/
|
||||
#define _UC_SETSTACK 0x00010000
|
||||
#define _UC_CLRSTACK 0x00020000
|
||||
#define _UC_VM 0x00040000
|
||||
#define _UC_TLSBASE 0x00080000
|
||||
|
||||
/*
|
||||
* Layout of mcontext_t according to the System V Application Binary Interface,
|
||||
* Intel386(tm) Architecture Processor Supplement, Fourth Edition.
|
||||
*/
|
||||
|
||||
/*
|
||||
* General register state
|
||||
*/
|
||||
#define _NGREG 19
|
||||
typedef int __greg_t;
|
||||
typedef __greg_t __gregset_t[_NGREG];
|
||||
|
||||
#define _REG_GS 0
|
||||
#define _REG_FS 1
|
||||
#define _REG_ES 2
|
||||
#define _REG_DS 3
|
||||
#define _REG_EDI 4
|
||||
#define _REG_ESI 5
|
||||
#define _REG_EBP 6
|
||||
#define _REG_ESP 7
|
||||
#define _REG_EBX 8
|
||||
#define _REG_EDX 9
|
||||
#define _REG_ECX 10
|
||||
#define _REG_EAX 11
|
||||
#define _REG_TRAPNO 12
|
||||
#define _REG_ERR 13
|
||||
#define _REG_EIP 14
|
||||
#define _REG_CS 15
|
||||
#define _REG_EFL 16
|
||||
#define _REG_UESP 17
|
||||
#define _REG_SS 18
|
||||
|
||||
/*
|
||||
* Floating point register state
|
||||
*/
|
||||
typedef struct {
|
||||
union {
|
||||
struct {
|
||||
int __fp_state[27]; /* Environment and registers */
|
||||
int __fp_status; /* Software status word */
|
||||
} __fpchip_state;
|
||||
struct {
|
||||
char __fp_emul[246];
|
||||
char __fp_epad[2];
|
||||
} __fp_emul_space;
|
||||
struct {
|
||||
char __fp_xmm[512];
|
||||
} __fp_xmm_state;
|
||||
int __fp_fpregs[128];
|
||||
} __fp_reg_set;
|
||||
long __fp_wregs[33]; /* Weitek? */
|
||||
} __fpregset_t;
|
||||
|
||||
typedef struct {
|
||||
__gregset_t __gregs;
|
||||
__fpregset_t __fpregs;
|
||||
__greg_t _mc_tlsbase;
|
||||
#ifdef __minix
|
||||
int mc_magic;
|
||||
int mc_flags;
|
||||
#endif
|
||||
} mcontext_t;
|
||||
|
||||
__BEGIN_DECLS
|
||||
#ifdef __minix
|
||||
#define _MC_FPU_SAVED 0x001
|
||||
#endif
|
||||
|
||||
#define _UC_FXSAVE 0x20 /* FP state is in FXSAVE format in XMM space */
|
||||
|
||||
#define _UC_MACHINE_PAD 4 /* Padding appended to ucontext_t */
|
||||
|
||||
#define _UC_UCONTEXT_ALIGN (~0xf)
|
||||
|
||||
#ifdef _KERNEL_OPT
|
||||
#include "opt_vm86.h"
|
||||
#ifdef VM86
|
||||
/*#include <machine/psl.h>*/
|
||||
#define PSL_VM 0x00020000
|
||||
#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_UESP] + \
|
||||
((uc)->uc_mcontext.__gregs[_REG_EFL] & PSL_VM ? \
|
||||
((uc)->uc_mcontext.__gregs[_REG_SS] << 4) : 0))
|
||||
#endif /* VM86 */
|
||||
#endif /* _KERNEL_OPT */
|
||||
|
||||
#ifndef _UC_MACHINE_SP
|
||||
#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_UESP])
|
||||
#endif
|
||||
#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_EIP])
|
||||
#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_EAX])
|
||||
|
||||
#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
|
||||
|
||||
#ifdef __minix
|
||||
#define _UC_MACHINE_STACK(uc) ((uc)->uc_mcontext.__gregs[_REG_ESP])
|
||||
#define _UC_MACHINE_SET_STACK(uc, esp) _UC_MACHINE_STACK(uc) = (esp)
|
||||
|
||||
#define _UC_MACHINE_EBP(uc) ((uc)->uc_mcontext.__gregs[_REG_EBP])
|
||||
#define _UC_MACHINE_SET_EBP(uc, ebp) _UC_MACHINE_EBP(uc) = (ebp)
|
||||
|
||||
#define _UC_MACHINE_ESI(uc) ((uc)->uc_mcontext.__gregs[_REG_ESI])
|
||||
#define _UC_MACHINE_SET_ESI(uc, esi) _UC_MACHINE_ESI(uc) = (esi)
|
||||
#endif
|
||||
|
||||
#define __UCONTEXT_SIZE 776
|
||||
|
||||
static __inline void *
|
||||
__lwp_getprivate_fast(void)
|
||||
{
|
||||
void *__tmp;
|
||||
|
||||
__asm volatile("movl %%gs:0, %0" : "=r" (__tmp));
|
||||
|
||||
return __tmp;
|
||||
}
|
||||
|
||||
#ifdef __minix
|
||||
int setmcontext(const mcontext_t *mcp);
|
||||
int getmcontext(mcontext_t *mcp);
|
||||
__END_DECLS
|
||||
#define MCF_MAGIC 0xc0ffee
|
||||
#endif
|
||||
|
||||
#endif /* _MACHINE_MCONTEXT_H */
|
||||
#endif /* !_I386_MCONTEXT_H_ */
|
||||
|
|
|
|||
|
|
@ -109,7 +109,7 @@ struct __ucontext {
|
|||
#ifdef _KERNEL
|
||||
struct lwp;
|
||||
|
||||
#ifdef __UCONTEXT_SIZE
|
||||
#if defined(__UCONTEXT_SIZE) && !defined(__minix)
|
||||
__CTASSERT(sizeof(ucontext_t) == __UCONTEXT_SIZE);
|
||||
#endif
|
||||
|
||||
|
|
@ -123,7 +123,7 @@ int cpu_mcontext_validate(struct lwp *, const mcontext_t *);
|
|||
#ifdef __minix
|
||||
__BEGIN_DECLS
|
||||
void resumecontext(ucontext_t *ucp);
|
||||
#ifdef __UCONTEXT_SIZE
|
||||
#if defined(__UCONTEXT_SIZE) && !defined(__minix)
|
||||
__CTASSERT(sizeof(ucontext_t) == __UCONTEXT_SIZE);
|
||||
#endif
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue