| kse_asm.S (107138) | kse_asm.S (107165) |
|---|---|
| 1/* 2 * Copyright (c) 2002 Jonathan Mini <mini@freebsd.org>. 3 * Copyright (c) 2001 Daniel Eischen <deischen@freebsd.org>. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 10 unchanged lines hidden (view full) --- 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * | 1/* 2 * Copyright (c) 2002 Jonathan Mini <mini@freebsd.org>. 3 * Copyright (c) 2001 Daniel Eischen <deischen@freebsd.org>. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: --- 10 unchanged lines hidden (view full) --- 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * |
| 27 * $FreeBSD: head/tools/KSE/ksetest/kse_asm.S 107138 2002-11-21 09:48:39Z davidxu $ | 27 * $FreeBSD: head/tools/KSE/ksetest/kse_asm.S 107165 2002-11-22 00:23:02Z julian $ |
| 28 */ 29 30#include <machine/asm.h> | 28 */ 29 30#include <machine/asm.h> |
| 31__FBSDID("$FreeBSD: head/tools/KSE/ksetest/kse_asm.S 107138 2002-11-21 09:48:39Z davidxu $"); | 31__FBSDID("$FreeBSD: head/tools/KSE/ksetest/kse_asm.S 107165 2002-11-22 00:23:02Z julian $"); |
| 32 33/* 34 * Where do we define these? 35 */ 36#define MC_SIZE 640 /* sizeof mcontext_t */ 37#define UC_MC_OFFSET 16 /* offset to mcontext from ucontext */ 38#define UC_MC_LEN_OFFSET 96 /* offset to mc_len from mcontext */ 39#define MC_LEN_OFFSET 80 /* offset to mc_len from mcontext */ --- 17 unchanged lines hidden (view full) --- 57 jne 1f 58 movl $-1, %eax 59 jmp 5f 601: cmpl $MC_SIZE, UC_MC_LEN_OFFSET(%edx) /* is context valid? */ 61 je 2f 62 movl $-1, %eax /* bzzzt, invalid context */ 63 jmp 5f 642: movl 8(%esp), %eax /* get address of curthreadp */ | 32 33/* 34 * Where do we define these? 35 */ 36#define MC_SIZE 640 /* sizeof mcontext_t */ 37#define UC_MC_OFFSET 16 /* offset to mcontext from ucontext */ 38#define UC_MC_LEN_OFFSET 96 /* offset to mc_len from mcontext */ 39#define MC_LEN_OFFSET 80 /* offset to mc_len from mcontext */ --- 17 unchanged lines hidden (view full) --- 57 jne 1f 58 movl $-1, %eax 59 jmp 5f 601: cmpl $MC_SIZE, UC_MC_LEN_OFFSET(%edx) /* is context valid? */ 61 je 2f 62 movl $-1, %eax /* bzzzt, invalid context */ 63 jmp 5f 642: movl 8(%esp), %eax /* get address of curthreadp */ |
| 65 movl %edx, (%eax) /* we're now the current thread */ | 65 movl %edx, %ebx /* save the pointer for later */ |
| 66 /* 67 * From here on, we don't touch the old stack. 68 */ 69 addl $UC_MC_OFFSET, %edx /* add offset to mcontext */ 70 movl 4(%edx), %gs 71 movl 8(%edx), %fs 72 movl 12(%edx), %es 73 movl 16(%edx), %ds --- 6 unchanged lines hidden (view full) --- 80 movl 60(%edx), %eax /* put return address at top of stack */ 81 movl %eax, (%esp) 82 cmpl $0, MC_OWNEDFP_OFFSET(%edx) /* are FP regs valid? */ 83 jz 3f 84 frstor MC_FP_REGS_OFFSET(%edx) /* restore FP regs */ 85 jmp 4f 863: fninit 87 fldcw MC_FP_CW_OFFSET(%edx) | 66 /* 67 * From here on, we don't touch the old stack. 68 */ 69 addl $UC_MC_OFFSET, %edx /* add offset to mcontext */ 70 movl 4(%edx), %gs 71 movl 8(%edx), %fs 72 movl 12(%edx), %es 73 movl 16(%edx), %ds --- 6 unchanged lines hidden (view full) --- 80 movl 60(%edx), %eax /* put return address at top of stack */ 81 movl %eax, (%esp) 82 cmpl $0, MC_OWNEDFP_OFFSET(%edx) /* are FP regs valid? */ 83 jz 3f 84 frstor MC_FP_REGS_OFFSET(%edx) /* restore FP regs */ 85 jmp 4f 863: fninit 87 fldcw MC_FP_CW_OFFSET(%edx) |
| 884: movl 48(%edx), %eax /* restore ax, bx, cx */ 89 movl 36(%edx), %ebx 90 movl 44(%edx), %ecx 91 pushl 68(%edx) /* flags on stack */ 92 pushl 40(%edx) /* %edx on stack */ 93 popl %edx /* %edx off stack */ 94 popf /* flags off stack */ 955: ret /* %eip off stack */ | 884: pushl 68(%edx) /* flags */ 89 pushl 48(%edx) /* eax */ 90 pushl 36(%edx) /* ebx */ 91 movl 40(%edx), %edx /* edx */ 92 movl %ebx, (%eax) /* <---- set new mailbox pointer */ 93 popl %ebx 94 popl %eax 95 popf 965: ret |
| 96 97/* 98 * int thread_to_uts(struct kse_thr_mailbox *tm, struct kse_mailbox *km); 99 * 100 * Does not return on success, returns -1 otherwise. 101 */ 102ENTRY(thread_to_uts) 103 movl 4(%esp), %eax /* get address of context */ --- 48 unchanged lines hidden --- | 97 98/* 99 * int thread_to_uts(struct kse_thr_mailbox *tm, struct kse_mailbox *km); 100 * 101 * Does not return on success, returns -1 otherwise. 102 */ 103ENTRY(thread_to_uts) 104 movl 4(%esp), %eax /* get address of context */ --- 48 unchanged lines hidden --- |