Changeset 4bf0926e in mainline for kernel/arch/amd64/src


Ignore:
Timestamp:
2016-09-01T22:14:30Z (9 years ago)
Author:
Martin Decky <martin@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
2c2d54a
Parents:
8b6aa39
Message:

amd64: resurrect optional support for the 'large' memory model ('kernel' memory model stays the default)

Location:
kernel/arch/amd64/src
Files:
3 edited

Legend:

Unmodified
Added
Removed
  • kernel/arch/amd64/src/boot/multiboot.S

    r8b6aa39 r4bf0926e  
    430430        movl multiboot_eax, %edi
    431431        movl multiboot_ebx, %esi
     432       
     433#ifdef MEMORY_MODEL_large
     434        movabsq $amd64_pre_main, %rax
     435        callq *%rax
     436#else
    432437        callq amd64_pre_main
    433 
     438#endif
     439       
    434440        long_status $status_main
    435441       
    436442        /* Call main_bsp() */
    437         callq main_bsp
     443#ifdef MEMORY_MODEL_large
     444        movabsq $main_bsp, %rax
     445        callq *%rax
     446#else
     447        callq main_bsp
     448#endif
    438449       
    439450        /* Not reached */
     
    622633        ptl2gen 512 7
    623634
     635#ifdef MEMORY_MODEL_kernel
    624636.align 4096
    625637ptl_1:
     
    638650        .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT)
    639651
    640 
    641652.align 4096
    642653SYMBOL(ptl_0)
     
    644655        .fill 510, 8, 0
    645656        .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
     657#endif
     658
     659#ifdef MEMORY_MODEL_large
     660.align 4096
     661ptl_1:
     662        /* Identity mapping for [0; 8G) */
     663        .quad ptl_2_0g + (PTL_WRITABLE | PTL_PRESENT)
     664        .quad ptl_2_1g + (PTL_WRITABLE | PTL_PRESENT)
     665        .quad ptl_2_2g + (PTL_WRITABLE | PTL_PRESENT)
     666        .quad ptl_2_3g + (PTL_WRITABLE | PTL_PRESENT)
     667        .quad ptl_2_4g + (PTL_WRITABLE | PTL_PRESENT)
     668        .quad ptl_2_5g + (PTL_WRITABLE | PTL_PRESENT)
     669        .quad ptl_2_6g + (PTL_WRITABLE | PTL_PRESENT)
     670        .quad ptl_2_7g + (PTL_WRITABLE | PTL_PRESENT)
     671        .fill 504, 8, 0
     672
     673.align 4096
     674SYMBOL(ptl_0)
     675        .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
     676        .fill 255, 8, 0
     677        .quad ptl_1 + (PTL_WRITABLE | PTL_PRESENT)
     678        .fill 255, 8, 0
     679#endif
    646680
    647681.section K_DATA_START, "aw", @progbits
  • kernel/arch/amd64/src/boot/multiboot2.S

    r8b6aa39 r4bf0926e  
    253253        movl multiboot_eax, %edi
    254254        movl multiboot_ebx, %esi
    255         callq amd64_pre_main
     255       
     256#ifdef MEMORY_MODEL_large
     257        movabsq $amd64_pre_main, %rax
     258        callq *%rax
     259#else
     260        callq amd64_pre_main
     261#endif
    256262       
    257263        /* Call main_bsp() */
    258         callq main_bsp
     264#ifdef MEMORY_MODEL_large
     265        movabsq $main_bsp, %rax
     266        callq *%rax
     267#else
     268        callq main_bsp
     269#endif
    259270       
    260271        /* Not reached */
  • kernel/arch/amd64/src/context.S

    r8b6aa39 r4bf0926e  
    5050        movq %r14, CONTEXT_OFFSET_R14(%rdi)
    5151        movq %r15, CONTEXT_OFFSET_R15(%rdi)
    52 
     52       
     53#ifdef MEMORY_MODEL_large
     54        movabsq $vreg_ptr, %rsi
     55        movq (%rsi), %rsi
     56#else
    5357        movq vreg_ptr, %rsi
     58#endif
    5459        movq %fs:VREG_TP(%rsi), %rsi
    5560        movq %rsi, CONTEXT_OFFSET_TP(%rdi)
     
    7984        movq %rdx, (%rsp)
    8085       
    81         movq CONTEXT_OFFSET_TP(%rdi), %rcx
     86        movq CONTEXT_OFFSET_TP(%rdi), %rcx
     87#ifdef MEMORY_MODEL_large
     88        movabsq $vreg_ptr, %rsi
     89        movq (%rsi), %rsi
     90#else
    8291        movq vreg_ptr, %rsi
     92#endif
    8393        movq %rcx, %fs:VREG_TP(%rsi)
    8494       
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