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The existing RELRO scheme may leave a 1-page gap before the RELRO segment and align the end of the RELRO segment to the page size: [18] .eh_frame PROGBITS 408fa0 008fa0 005e80 00 A 0 0 8 [19] .init_array INIT_ARRAY 410de0 00fde0 000008 08 WA 0 0 8 [20] .fini_array FINI_ARRAY 410de8 00fde8 000008 08 WA 0 0 8 [21] .dynamic DYNAMIC 410df0 00fdf0 000200 10 WA 7 0 8 [22] .got PROGBITS 410ff0 00fff0 000010 08 WA 0 0 8 [23] .got.plt PROGBITS 411000 010000 000048 08 WA 0 0 8 Instead, we can remove the 1-page gap if the maximum page size >= the maximum section alignment: [18] .eh_frame PROGBITS 408fa0 008fa0 005e80 00 A 0 0 8 [19] .init_array INIT_ARRAY 40fde0 00fde0 000008 08 WA 0 0 8 [20] .fini_array FINI_ARRAY 40fde8 00fde8 000008 08 WA 0 0 8 [21] .dynamic DYNAMIC 40fdf0 00fdf0 000200 10 WA 7 0 8 [22] .got PROGBITS 40fff0 00fff0 000010 08 WA 0 0 8 [23] .got.plt PROGBITS 410000 010000 000048 08 WA 0 0 8 Because the end of the RELRO segment is always aligned to the page size and may not be moved, the RELRO segment size may be increased: [ 3] .dynstr STRTAB 000148 000148 000001 00 A 0 0 1 [ 4] .eh_frame PROGBITS 000150 000150 000000 00 A 0 0 8 [ 5] .init_array INIT_ARRAY 200150 000150 000010 08 WA 0 0 1 [ 6] .fini_array FINI_ARRAY 200160 000160 000010 08 WA 0 0 1 [ 7] .jcr PROGBITS 200170 000170 000008 00 WA 0 0 1 [ 8] .data.rel.ro PROGBITS 200180 000180 000020 00 WA 0 0 16 [ 9] .dynamic DYNAMIC 2001a0 0001a0 0001c0 10 WA 3 0 8 [10] .got PROGBITS 200360 000360 0002a8 00 WA 0 0 8 [11] .bss NOBITS 201000 000608 000840 00 WA 0 0 1 vs the old section layout: [ 3] .dynstr STRTAB 000148 000148 000001 00 A 0 0 1 [ 4] .eh_frame PROGBITS 000150 000150 000000 00 A 0 0 8 [ 5] .init_array INIT_ARRAY 200b48 000b48 000010 08 WA 0 0 1 [ 6] .fini_array FINI_ARRAY 200b58 000b58 000010 08 WA 0 0 1 [ 7] .jcr PROGBITS 200b68 000b68 000008 00 WA 0 0 1 [ 8] .data.rel.ro PROGBITS 200b70 000b70 000020 00 WA 0 0 16 [ 9] .dynamic DYNAMIC 200b90 000b90 0001c0 10 WA 3 0 8 [10] .got PROGBITS 200d50 000d50 0002a8 00 WA 0 0 8 [11] .bss NOBITS 201000 000ff8 000840 00 WA 0 0 1 But there is no 1-page gap. PR ld/28743 * ldlang.c (lang_size_relro_segment_1): Remove the 1-page gap before the RELRO segment if the maximum page size >= the maximum section alignment. * testsuite/ld-i386/pr20830.d: Adjusted. * testsuite/ld-s390/gotreloc_64-relro-1.dd: Likewise. * testsuite/ld-x86-64/pr14207.d: Likewise. * testsuite/ld-x86-64/pr18176.d: Likewise. * testsuite/ld-x86-64/pr20830a-now.d: Likewise. * testsuite/ld-x86-64/pr20830a.d: Likewise. * testsuite/ld-x86-64/pr20830b-now.d: Likewise. * testsuite/ld-x86-64/pr20830b.d: Likewise. * testsuite/ld-x86-64/pr21038a-now.d: Likewise. * testsuite/ld-x86-64/pr21038a.d: Likewise. * testsuite/ld-x86-64/pr21038b-now.d: Likewise. * testsuite/ld-x86-64/pr21038c-now.d: Likewise. * testsuite/ld-x86-64/pr21038c.d: Likewise. |
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| .. | ||
| gotreloc_31-1.dd | ||
| gotreloc_64-norelro-1.dd | ||
| gotreloc_64-relro-1.dd | ||
| gotreloc-1.s | ||
| gotreloc-1.ver | ||
| pltoffset-1.dd | ||
| pltoffset-1.ld | ||
| pltoffset-1.s | ||
| pr26918-1.d | ||
| pr26918-1.s | ||
| s390.exp | ||
| tlsbin_64.dd | ||
| tlsbin_64.rd | ||
| tlsbin_64.s | ||
| tlsbin_64.sd | ||
| tlsbin_64.td | ||
| tlsbin.dd | ||
| tlsbin.rd | ||
| tlsbin.s | ||
| tlsbin.sd | ||
| tlsbin.td | ||
| tlsbinpic_64.s | ||
| tlsbinpic.s | ||
| tlslib_64.s | ||
| tlslib.s | ||
| tlspic1_64.s | ||
| tlspic1.s | ||
| tlspic2_64.s | ||
| tlspic2.s | ||
| tlspic_64.dd | ||
| tlspic_64.rd | ||
| tlspic_64.sd | ||
| tlspic_64.td | ||
| tlspic.dd | ||
| tlspic.rd | ||
| tlspic.sd | ||
| tlspic.td | ||