projects / packages / boost.git / blame
| Commit | Line | Data |
|---|---|---|
| bab7ef8c JR |
1 | Index: libs/context/src/asm/jump_x86_64_sysv_elf_gas.S |
| 2 | =================================================================== | |
| 3 | --- libs/context/src/asm/jump_x86_64_sysv_elf_gas.S (revision 86799) | |
| 4 | +++ libs/context/src/asm/jump_x86_64_sysv_elf_gas.S (working copy) | |
| 5 | @@ -38,6 +38,12 @@ | |
| 6 | * * | |
| 7 | * **************************************************************************************/ | |
| 8 | ||
| 9 | +#ifdef __ILP32__ | |
| 10 | +# define SIZEOF_FCONTEXT_T 0x50 | |
| 11 | +#else | |
| 12 | +# define SIZEOF_FCONTEXT_T 0x58 | |
| 13 | +#endif | |
| 14 | + | |
| 15 | .text | |
| 16 | .globl jump_fcontext | |
| 17 | .type jump_fcontext,@function | |
| 18 | @@ -53,11 +59,11 @@ jump_fcontext: | |
| 19 | cmp $0, %rcx | |
| 20 | je 1f | |
| 21 | ||
| 22 | - stmxcsr 0x50(%rdi) /* save MMX control and status word */ | |
| 23 | - fnstcw 0x54(%rdi) /* save x87 control word */ | |
| 24 | + stmxcsr (SIZEOF_FCONTEXT_T - 8)(%rdi) /* save MMX control and status word */ | |
| 25 | + fnstcw (SIZEOF_FCONTEXT_T - 4)(%rdi) /* save x87 control word */ | |
| 26 | ||
| 27 | - ldmxcsr 0x50(%rsi) /* restore MMX control and status word */ | |
| 28 | - fldcw 0x54(%rsi) /* restore x87 control word */ | |
| 29 | + ldmxcsr (SIZEOF_FCONTEXT_T - 8)(%rsi) /* restore MMX control and status word */ | |
| 30 | + fldcw (SIZEOF_FCONTEXT_T - 4)(%rsi) /* restore x87 control word */ | |
| 31 | 1: | |
| 32 | ||
| 33 | leaq 0x8(%rsp), %rax /* exclude the return address and save as stack pointer */ | |
| 34 | Index: libs/context/src/asm/make_x86_64_sysv_elf_gas.S | |
| 35 | =================================================================== | |
| 36 | --- libs/context/src/asm/make_x86_64_sysv_elf_gas.S (revision 86799) | |
| 37 | +++ libs/context/src/asm/make_x86_64_sysv_elf_gas.S (working copy) | |
| 38 | @@ -38,26 +38,43 @@ | |
| 39 | * * | |
| 40 | * **************************************************************************************/ | |
| 41 | ||
| 42 | +#ifdef __ILP32__ | |
| 43 | +# define SIZEOF_FCONTEXT_T 0x50 | |
| 44 | +#else | |
| 45 | +# define SIZEOF_FCONTEXT_T 0x58 | |
| 46 | +#endif | |
| 47 | + | |
| 48 | .text | |
| 49 | .globl make_fcontext | |
| 50 | .type make_fcontext,@function | |
| 51 | .align 16 | |
| 52 | -make_fcontext: | |
| 53 | - leaq -0x58(%rdi), %rax /* reserve space for fcontext_t at top of context stack */ | |
| 54 | +make_fcontext: // (rax, rsi, rdx) | |
| 55 | + leaq -SIZEOF_FCONTEXT_T(%rdi), %rax /* reserve space for fcontext_t at top of context stack */ | |
| 56 | ||
| 57 | /* shift address in RAX to lower 16 byte boundary */ | |
| 58 | /* == pointer to fcontext_t and address of context stack */ | |
| 59 | andq $-16, %rax | |
| 60 | ||
| 61 | +#ifdef __ILP32__ | |
| 62 | + mov %edi, 0x40(%rax) /* save address of context stack pointer (base) in fcontext_t */ | |
| 63 | + mov %esi, 0x44(%rax) /* save context stack size in fcontext_t */ | |
| 64 | + mov %edx, 0x38(%rax) /* save address of context function in fcontext_t */ | |
| 65 | +#else | |
| 66 | movq %rdi, 0x40(%rax) /* save address of context stack pointer (base) in fcontext_t */ | |
| 67 | movq %rsi, 0x48(%rax) /* save context stack size in fcontext_t */ | |
| 68 | movq %rdx, 0x38(%rax) /* save address of context function in fcontext_t */ | |
| 69 | +#endif | |
| 70 | ||
| 71 | - stmxcsr 0x50(%rax) /* save MMX control and status word */ | |
| 72 | - fnstcw 0x54(%rax) /* save x87 control word */ | |
| 73 | + stmxcsr (SIZEOF_FCONTEXT_T - 8)(%rax) /* save MMX control and status word */ | |
| 74 | + fnstcw (SIZEOF_FCONTEXT_T - 4)(%rax) /* save x87 control word */ | |
| 75 | ||
| 76 | +#ifdef __ILP32__ | |
| 77 | + leaq -0x10(%rax), %rdx /* reserve space for the return address on context stack, (RSP - 0x8) % 16 == 0 */ | |
| 78 | + mov %edx, 0x30(%rax) /* save address in RDX as stack pointer for context function */ | |
| 79 | +#else | |
| 80 | leaq -0x8(%rax), %rdx /* reserve space for the return address on context stack, (RSP - 0x8) % 16 == 0 */ | |
| 81 | movq %rdx, 0x30(%rax) /* save address in RDX as stack pointer for context function */ | |
| 82 | +#endif | |
| 83 | ||
| 84 | leaq finish(%rip), %rcx /* compute abs address of label finish */ | |
| 85 | movq %rcx, (%rdx) /* save address of finish as return address for context function */ |