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jcourreges
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riscv64 support for fibers
We add riscv64 assembly files from Boost, needed for fibers support, and hook up riscv64 fibers support during configure. Closes GH-7879.
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‎NEWS

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. Fixed bug GH-7757 (Multi-inherited final constant causes fatal error).
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(cmb)
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. Fixed zend_fibers.c build with ZEND_FIBER_UCONTEXT. (Petr Sumbera)
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. Added riscv64 support for fibers. (Jeremie Courreges-Anglas)
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- Filter:
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. Fixed FILTER_FLAG_NO_RES_RANGE flag. (Yifan Tong)

‎Zend/asm/jump_riscv64_sysv_elf_gas.S

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/*
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*******************************************************
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* *
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* ------------------------------------------------- *
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* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | *
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* ------------------------------------------------- *
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* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| *
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* ------------------------------------------------- *
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* | fs0 | fs1 | fs2 | fs3 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | *
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* ------------------------------------------------- *
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* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| *
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* ------------------------------------------------- *
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* | fs4 | fs5 | fs6 | fs7 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | *
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* ------------------------------------------------- *
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* | 0x40| 0x44| 0x48| 0x4c| 0x50| 0x54| 0x58| 0x5c| *
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* ------------------------------------------------- *
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* | fs8 | fs9 | fs10 | fs11 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | *
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* ------------------------------------------------- *
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* | 0x60| 0x64| 0x68| 0x6c| 0x70| 0x74| 0x78| 0x7c| *
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* ------------------------------------------------- *
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* | s0 | s1 | s2 | s3 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | *
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* ------------------------------------------------- *
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* | 0x80| 0x84| 0x88| 0x8c| 0x90| 0x94| 0x98| 0x9c| *
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* ------------------------------------------------- *
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* | s4 | s5 | s6 | s7 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | *
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* ------------------------------------------------- *
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* | 0xa0| 0xa4| 0xa8| 0xac| 0xb0| 0xb4| 0xb8| 0xbc| *
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* ------------------------------------------------- *
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* | s8 | s9 | s10 | s11 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 48 | 49 | 50 | 51 | | | | | *
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* ------------------------------------------------- *
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* | 0xc0| 0xc4| 0xc8| 0xcc| | | | | *
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* ------------------------------------------------- *
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* | ra | pc | | | *
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* ------------------------------------------------- *
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* *
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*******************************************************/
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.file "jump_riscv64_sysv_elf_gas.S"
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.text
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.align 1
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.global jump_fcontext
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.type jump_fcontext, %function
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jump_fcontext:
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# prepare stack for GP + FPU
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addi sp, sp, -0xd0
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# save fs0 - fs11
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fsd fs0, 0x00(sp)
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fsd fs1, 0x08(sp)
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fsd fs2, 0x10(sp)
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fsd fs3, 0x18(sp)
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fsd fs4, 0x20(sp)
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fsd fs5, 0x28(sp)
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fsd fs6, 0x30(sp)
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fsd fs7, 0x38(sp)
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fsd fs8, 0x40(sp)
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fsd fs9, 0x48(sp)
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fsd fs10, 0x50(sp)
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fsd fs11, 0x58(sp)
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# save s0-s11, ra
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sd s0, 0x60(sp)
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sd s1, 0x68(sp)
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sd s2, 0x70(sp)
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sd s3, 0x78(sp)
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sd s4, 0x80(sp)
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sd s5, 0x88(sp)
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sd s6, 0x90(sp)
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sd s7, 0x98(sp)
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sd s8, 0xa0(sp)
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sd s9, 0xa8(sp)
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sd s10, 0xb0(sp)
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sd s11, 0xb8(sp)
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sd ra, 0xc0(sp)
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# save RA as PC
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sd ra, 0xc8(sp)
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# store SP (pointing to context-data) in A2
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mv a2, sp
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# restore SP (pointing to context-data) from A0
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mv sp, a0
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# load fs0 - fs11
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fld fs0, 0x00(sp)
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fld fs1, 0x08(sp)
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fld fs2, 0x10(sp)
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fld fs3, 0x18(sp)
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fld fs4, 0x20(sp)
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fld fs5, 0x28(sp)
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fld fs6, 0x30(sp)
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fld fs7, 0x38(sp)
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fld fs8, 0x40(sp)
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fld fs9, 0x48(sp)
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fld fs10, 0x50(sp)
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fld fs11, 0x58(sp)
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# load s0-s11,ra
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ld s0, 0x60(sp)
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ld s1, 0x68(sp)
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ld s2, 0x70(sp)
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ld s3, 0x78(sp)
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ld s4, 0x80(sp)
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ld s5, 0x88(sp)
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ld s6, 0x90(sp)
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ld s7, 0x98(sp)
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ld s8, 0xa0(sp)
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ld s9, 0xa8(sp)
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ld s10, 0xb0(sp)
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ld s11, 0xb8(sp)
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ld ra, 0xc0(sp)
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# return transfer_t from jump
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# pass transfer_t as first arg in context function
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# a0 == FCTX, a1 == DATA
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mv a0, a2
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# load pc
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ld a2, 0xc8(sp)
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# restore stack from GP + FPU
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addi sp, sp, 0xd0
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jr a2
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.size jump_fcontext,.-jump_fcontext
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# Mark that we don't need executable stack.
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.section .note.GNU-stack,"",%progbits

‎Zend/asm/make_riscv64_sysv_elf_gas.S

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/*
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*******************************************************
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* *
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* ------------------------------------------------- *
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* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | *
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* ------------------------------------------------- *
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* | 0x0 | 0x4 | 0x8 | 0xc | 0x10| 0x14| 0x18| 0x1c| *
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* ------------------------------------------------- *
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* | fs0 | fs1 | fs2 | fs3 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | *
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* ------------------------------------------------- *
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* | 0x20| 0x24| 0x28| 0x2c| 0x30| 0x34| 0x38| 0x3c| *
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* ------------------------------------------------- *
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* | fs4 | fs5 | fs6 | fs7 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | *
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* ------------------------------------------------- *
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* | 0x40| 0x44| 0x48| 0x4c| 0x50| 0x54| 0x58| 0x5c| *
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* ------------------------------------------------- *
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* | fs8 | fs9 | fs10 | fs11 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | *
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* ------------------------------------------------- *
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* | 0x60| 0x64| 0x68| 0x6c| 0x70| 0x74| 0x78| 0x7c| *
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* ------------------------------------------------- *
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* | s0 | s1 | s2 | s3 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | *
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* ------------------------------------------------- *
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* | 0x80| 0x84| 0x88| 0x8c| 0x90| 0x94| 0x98| 0x9c| *
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* ------------------------------------------------- *
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* | s4 | s5 | s6 | s7 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | *
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* ------------------------------------------------- *
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* | 0xa0| 0xa4| 0xa8| 0xac| 0xb0| 0xb4| 0xb8| 0xbc| *
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* ------------------------------------------------- *
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* | s8 | s9 | s10 | s11 | *
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* ------------------------------------------------- *
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* ------------------------------------------------- *
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* | 48 | 49 | 50 | 51 | | | | | *
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* ------------------------------------------------- *
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* | 0xc0| 0xc4| 0xc8| 0xcc| | | | | *
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* ------------------------------------------------- *
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* | ra | pc | | | *
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* ------------------------------------------------- *
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* *
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*******************************************************/
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.file "make_riscv64_sysv_elf_gas.S"
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.text
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.align 1
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.global make_fcontext
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.type make_fcontext, %function
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make_fcontext:
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# shift address in a0 (allocated stack) to lower 16 byte boundary
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andi a0, a0, ~0xF
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# reserve space for context-data on context-stack
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addi a0, a0, -0xd0
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# third arg of make_fcontext() == address of context-function
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# store address as a PC to jump in
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sd a2, 0xc8(a0)
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# save address of finish as return-address for context-function
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# will be entered after context-function returns (RA register)
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lla a4, finish
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sd a4, 0xc0(a0)
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ret // return pointer to context-data (a0)
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finish:
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# exit code is zero
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li a0, 0
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# exit application
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tail _exit@plt
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.size make_fcontext,.-make_fcontext
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# Mark that we don't need executable stack.
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.section .note.GNU-stack,"",%progbits

‎configure.ac

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@@ -1201,6 +1201,7 @@ AS_CASE([$host_cpu],
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[arm*], [fiber_cpu="arm32"],
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[ppc64*|powerpc64*], [fiber_cpu="ppc64"],
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[ppc*|powerpc*], [fiber_cpu="ppc32"],
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[riscv64*], [fiber_cpu="riscv64"],
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[s390x*], [fiber_cpu="s390x"],
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[mips64*], [fiber_cpu="mips64"],
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[mips*], [fiber_cpu="mips32"],
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[arm32], [fiber_asm_file_prefix="arm_aapcs"],
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[ppc64], [fiber_asm_file_prefix="ppc64_sysv"],
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[ppc32], [fiber_asm_file_prefix="ppc32_sysv"],
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[riscv64], [fiber_asm_file_prefix="riscv64_sysv"],
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[s390x], [fiber_asm_file_prefix="s390x_sysv"],
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[mips64], [fiber_asm_file_prefix="mips64_n64"],
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[mips32], [fiber_asm_file_prefix="mips32_o32"],

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